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jet/tests/postgres/select_test.go
go-jet 01305a138f Add automatic type cast for integer literals 
In parameterized statements integer literals, like Int(num), are replaced with a placeholders. For some expressions,
postgres interpreter will not have enough information to deduce the type. If this is the case postgres returns an error.
Int8, Int16, Int32.... functions now will add automatic type cast over a placeholder, so type deduction is always possible.
2021-12-26 17:29:43 +01:00

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package postgres
import (
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/go-jet/jet/v2/internal/testutils"
. "github.com/go-jet/jet/v2/postgres"
"github.com/go-jet/jet/v2/tests/.gentestdata/jetdb/dvds/enum"
"github.com/go-jet/jet/v2/tests/.gentestdata/jetdb/dvds/model"
. "github.com/go-jet/jet/v2/tests/.gentestdata/jetdb/dvds/table"
"github.com/go-jet/jet/v2/tests/.gentestdata/jetdb/dvds/view"
)
func TestSelect_ScanToStruct(t *testing.T) {
expectedSQL := `
SELECT DISTINCT actor.actor_id AS "actor.actor_id",
actor.first_name AS "actor.first_name",
actor.last_name AS "actor.last_name",
actor.last_update AS "actor.last_update"
FROM dvds.actor
WHERE actor.actor_id = 2;
`
query := Actor.
SELECT(Actor.AllColumns).
DISTINCT().
WHERE(Actor.ActorID.EQ(Int(2)))
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(2))
actor := model.Actor{}
err := query.Query(db, &actor)
require.NoError(t, err)
expectedActor := model.Actor{
ActorID: 2,
FirstName: "Nick",
LastName: "Wahlberg",
LastUpdate: *testutils.TimestampWithoutTimeZone("2013-05-26 14:47:57.62", 2),
}
testutils.AssertDeepEqual(t, actor, expectedActor)
requireLogged(t, query)
}
func TestClassicSelect(t *testing.T) {
expectedSQL := `
SELECT payment.payment_id AS "payment.payment_id",
payment.customer_id AS "payment.customer_id",
payment.staff_id AS "payment.staff_id",
payment.rental_id AS "payment.rental_id",
payment.amount AS "payment.amount",
payment.payment_date AS "payment.payment_date",
customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active"
FROM dvds.payment
INNER JOIN dvds.customer ON (payment.customer_id = customer.customer_id)
ORDER BY payment.payment_id ASC
LIMIT 30;
`
query := SELECT(
Payment.AllColumns,
Customer.AllColumns,
).FROM(
Payment.
INNER_JOIN(Customer, Payment.CustomerID.EQ(Customer.CustomerID)),
).ORDER_BY(
Payment.PaymentID.ASC(),
).LIMIT(30)
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(30))
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 30)
requireLogged(t, query)
}
func TestSelect_ScanToSlice(t *testing.T) {
expectedSQL := `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active"
FROM dvds.customer
ORDER BY customer.customer_id ASC;
`
customers := []model.Customer{}
query := Customer.SELECT(Customer.AllColumns).ORDER_BY(Customer.CustomerID.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL)
err := query.Query(db, &customers)
require.NoError(t, err)
require.Equal(t, len(customers), 599)
testutils.AssertDeepEqual(t, customer0, customers[0])
testutils.AssertDeepEqual(t, customer1, customers[1])
testutils.AssertDeepEqual(t, lastCustomer, customers[598])
requireLogged(t, query)
}
func TestSelectAndUnionInProjection(t *testing.T) {
expectedSQL := `
SELECT payment.payment_id AS "payment.payment_id",
(
SELECT customer.customer_id AS "customer.customer_id"
FROM dvds.customer
LIMIT 1
),
(
(
SELECT payment.payment_id AS "payment.payment_id"
FROM dvds.payment
LIMIT 1
OFFSET 10
)
UNION
(
SELECT payment.payment_id AS "payment.payment_id"
FROM dvds.payment
LIMIT 1
OFFSET 2
)
LIMIT 1
)
FROM dvds.payment
LIMIT 12;
`
query := Payment.
SELECT(
Payment.PaymentID,
Customer.SELECT(Customer.CustomerID).LIMIT(1),
UNION(
Payment.SELECT(Payment.PaymentID).LIMIT(1).OFFSET(10),
Payment.SELECT(Payment.PaymentID).LIMIT(1).OFFSET(2),
).LIMIT(1),
).
LIMIT(12)
//fmt.Println(query.DebugSql())
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(1), int64(1), int64(10), int64(1), int64(2), int64(1), int64(12))
dest := []struct{}{}
err := query.Query(db, &dest)
require.NoError(t, err)
}
func TestJoinQueryStruct(t *testing.T) {
expectedSQL := `
SELECT film_actor.actor_id AS "film_actor.actor_id",
film_actor.film_id AS "film_actor.film_id",
film_actor.last_update AS "film_actor.last_update",
film.film_id AS "film.film_id",
film.title AS "film.title",
film.description AS "film.description",
film.release_year AS "film.release_year",
film.language_id AS "film.language_id",
film.rental_duration AS "film.rental_duration",
film.rental_rate AS "film.rental_rate",
film.length AS "film.length",
film.replacement_cost AS "film.replacement_cost",
film.rating AS "film.rating",
film.last_update AS "film.last_update",
film.special_features AS "film.special_features",
film.fulltext AS "film.fulltext",
language.language_id AS "language.language_id",
language.name AS "language.name",
language.last_update AS "language.last_update",
actor.actor_id AS "actor.actor_id",
actor.first_name AS "actor.first_name",
actor.last_name AS "actor.last_name",
actor.last_update AS "actor.last_update",
inventory.inventory_id AS "inventory.inventory_id",
inventory.film_id AS "inventory.film_id",
inventory.store_id AS "inventory.store_id",
inventory.last_update AS "inventory.last_update",
rental.rental_id AS "rental.rental_id",
rental.rental_date AS "rental.rental_date",
rental.inventory_id AS "rental.inventory_id",
rental.customer_id AS "rental.customer_id",
rental.return_date AS "rental.return_date",
rental.staff_id AS "rental.staff_id",
rental.last_update AS "rental.last_update"
FROM dvds.film_actor
INNER JOIN dvds.actor ON (film_actor.actor_id = actor.actor_id)
INNER JOIN dvds.film ON (film_actor.film_id = film.film_id)
INNER JOIN dvds.language ON (film.language_id = language.language_id)
INNER JOIN dvds.inventory ON (inventory.film_id = film.film_id)
INNER JOIN dvds.rental ON (rental.inventory_id = inventory.inventory_id)
ORDER BY film.film_id ASC
LIMIT 1000;
`
for i := 0; i < 2; i++ {
query := FilmActor.
INNER_JOIN(Actor, FilmActor.ActorID.EQ(Actor.ActorID)).
INNER_JOIN(Film, FilmActor.FilmID.EQ(Film.FilmID)).
INNER_JOIN(Language, Film.LanguageID.EQ(Language.LanguageID)).
INNER_JOIN(Inventory, Inventory.FilmID.EQ(Film.FilmID)).
INNER_JOIN(Rental, Rental.InventoryID.EQ(Inventory.InventoryID)).
SELECT(
FilmActor.AllColumns,
Film.AllColumns,
Language.AllColumns,
Actor.AllColumns,
Inventory.AllColumns,
Rental.AllColumns,
).
//WHERE(FilmActor.ActorID.GtEqL(1).AND(FilmActor.ActorID.LtEqL(2))).
ORDER_BY(Film.FilmID.ASC()).
LIMIT(1000)
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(1000))
var languageActorFilm []struct {
model.Language
Films []struct {
model.Film
Actors []struct {
model.Actor
}
Inventory []struct {
model.Inventory
Rental []model.Rental
}
}
}
err := query.Query(db, &languageActorFilm)
require.NoError(t, err)
require.Equal(t, len(languageActorFilm), 1)
require.Equal(t, len(languageActorFilm[0].Films), 10)
require.Equal(t, len(languageActorFilm[0].Films[0].Actors), 10)
}
}
func TestJoinQuerySlice(t *testing.T) {
expectedSQL := `
SELECT language.language_id AS "language.language_id",
language.name AS "language.name",
language.last_update AS "language.last_update",
film.film_id AS "film.film_id",
film.title AS "film.title",
film.description AS "film.description",
film.release_year AS "film.release_year",
film.language_id AS "film.language_id",
film.rental_duration AS "film.rental_duration",
film.rental_rate AS "film.rental_rate",
film.length AS "film.length",
film.replacement_cost AS "film.replacement_cost",
film.rating AS "film.rating",
film.last_update AS "film.last_update",
film.special_features AS "film.special_features",
film.fulltext AS "film.fulltext"
FROM dvds.film
INNER JOIN dvds.language ON (film.language_id = language.language_id)
WHERE film.rating = 'NC-17'
LIMIT 15;
`
type FilmsPerLanguage struct {
Language *model.Language
Film []model.Film
}
filmsPerLanguage := []FilmsPerLanguage{}
limit := 15
query := Film.
INNER_JOIN(Language, Film.LanguageID.EQ(Language.LanguageID)).
SELECT(Language.AllColumns, Film.AllColumns).
WHERE(Film.Rating.EQ(enum.MpaaRating.Nc17)).
LIMIT(15)
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(15))
err := query.Query(db, &filmsPerLanguage)
require.NoError(t, err)
require.Equal(t, len(filmsPerLanguage), 1)
require.Equal(t, len(filmsPerLanguage[0].Film), limit)
englishFilms := filmsPerLanguage[0]
require.Equal(t, *englishFilms.Film[0].Rating, model.MpaaRating_Nc17)
filmsPerLanguageWithPtrs := []*FilmsPerLanguage{}
err = query.Query(db, &filmsPerLanguageWithPtrs)
require.NoError(t, err)
require.Equal(t, len(filmsPerLanguage), 1)
require.Equal(t, len(filmsPerLanguage[0].Film), limit)
}
func TestExecution1(t *testing.T) {
stmt := City.
INNER_JOIN(Address, Address.CityID.EQ(City.CityID)).
INNER_JOIN(Customer, Customer.AddressID.EQ(Address.AddressID)).
SELECT(
City.CityID,
City.City,
Address.AddressID,
Address.Address,
Customer.CustomerID,
Customer.LastName,
).
WHERE(City.City.EQ(String("London")).OR(City.City.EQ(String("York")))).
ORDER_BY(City.CityID, Address.AddressID, Customer.CustomerID)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT city.city_id AS "city.city_id",
city.city AS "city.city",
address.address_id AS "address.address_id",
address.address AS "address.address",
customer.customer_id AS "customer.customer_id",
customer.last_name AS "customer.last_name"
FROM dvds.city
INNER JOIN dvds.address ON (address.city_id = city.city_id)
INNER JOIN dvds.customer ON (customer.address_id = address.address_id)
WHERE (city.city = 'London') OR (city.city = 'York')
ORDER BY city.city_id, address.address_id, customer.customer_id;
`, "London", "York")
var dest []struct {
model.City
Customers []struct {
model.Customer
Address model.Address
}
}
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 2)
require.Equal(t, dest[0].City.City, "London")
require.Equal(t, dest[1].City.City, "York")
require.Equal(t, len(dest[0].Customers), 2)
require.Equal(t, dest[0].Customers[0].LastName, "Hoffman")
require.Equal(t, dest[0].Customers[1].LastName, "Vines")
}
func TestExecution2(t *testing.T) {
type MyAddress struct {
ID int32 `sql:"primary_key"`
AddressLine string
}
type MyCustomer struct {
ID int32 `sql:"primary_key"`
LastName *string
Address MyAddress
}
type MyCity struct {
ID int32 `sql:"primary_key"`
Name string
Customers []MyCustomer
}
dest := []MyCity{}
stmt := City.
INNER_JOIN(Address, Address.CityID.EQ(City.CityID)).
INNER_JOIN(Customer, Customer.AddressID.EQ(Address.AddressID)).
SELECT(
City.CityID.AS("my_city.id"),
City.City.AS("myCity.Name"),
Address.AddressID.AS("My_Address.id"),
Address.Address.AS("my address.address line"),
Customer.CustomerID.AS("my_customer.id"),
Customer.LastName.AS("my_customer.last_name"),
).
WHERE(City.City.EQ(String("London")).OR(City.City.EQ(String("York")))).
ORDER_BY(City.CityID, Address.AddressID, Customer.CustomerID)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT city.city_id AS "my_city.id",
city.city AS "myCity.Name",
address.address_id AS "My_Address.id",
address.address AS "my address.address line",
customer.customer_id AS "my_customer.id",
customer.last_name AS "my_customer.last_name"
FROM dvds.city
INNER JOIN dvds.address ON (address.city_id = city.city_id)
INNER JOIN dvds.customer ON (customer.address_id = address.address_id)
WHERE (city.city = 'London') OR (city.city = 'York')
ORDER BY city.city_id, address.address_id, customer.customer_id;
`, "London", "York")
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 2)
require.Equal(t, dest[0].Name, "London")
require.Equal(t, dest[1].Name, "York")
require.Equal(t, len(dest[0].Customers), 2)
require.Equal(t, *dest[0].Customers[0].LastName, "Hoffman")
require.Equal(t, *dest[0].Customers[1].LastName, "Vines")
}
func TestExecution3(t *testing.T) {
var dest []struct {
CityID int32 `sql:"primary_key"`
CityName string
Customers []struct {
CustomerID int32 `sql:"primary_key"`
LastName *string
Address struct {
AddressID int32 `sql:"primary_key"`
AddressLine string
}
}
}
stmt := City.
INNER_JOIN(Address, Address.CityID.EQ(City.CityID)).
INNER_JOIN(Customer, Customer.AddressID.EQ(Address.AddressID)).
SELECT(
City.CityID.AS("city_id"),
City.City.AS("city_name"),
Customer.CustomerID.AS("customer_id"),
Customer.LastName.AS("last_name"),
Address.AddressID.AS("address_id"),
Address.Address.AS("address_line"),
).
WHERE(City.City.EQ(String("London")).OR(City.City.EQ(String("York")))).
ORDER_BY(City.CityID, Address.AddressID, Customer.CustomerID)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT city.city_id AS "city_id",
city.city AS "city_name",
customer.customer_id AS "customer_id",
customer.last_name AS "last_name",
address.address_id AS "address_id",
address.address AS "address_line"
FROM dvds.city
INNER JOIN dvds.address ON (address.city_id = city.city_id)
INNER JOIN dvds.customer ON (customer.address_id = address.address_id)
WHERE (city.city = 'London') OR (city.city = 'York')
ORDER BY city.city_id, address.address_id, customer.customer_id;
`, "London", "York")
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 2)
require.Equal(t, dest[0].CityName, "London")
require.Equal(t, dest[1].CityName, "York")
require.Equal(t, len(dest[0].Customers), 2)
require.Equal(t, *dest[0].Customers[0].LastName, "Hoffman")
require.Equal(t, *dest[0].Customers[1].LastName, "Vines")
}
func TestExecution4(t *testing.T) {
var dest []struct {
CityID int32 `sql:"primary_key" alias:"city.city_id"`
CityName string `alias:"city.city"`
Customers []struct {
CustomerID int32 `sql:"primary_key" alias:"customer_id"`
LastName *string `alias:"last_name"`
Address struct {
AddressID int32 `sql:"primary_key" alias:"AddressId"`
AddressLine string `alias:"address.address"`
} `alias:"address.*"`
} `alias:"customer"`
}
stmt := City.
INNER_JOIN(Address, Address.CityID.EQ(City.CityID)).
INNER_JOIN(Customer, Customer.AddressID.EQ(Address.AddressID)).
SELECT(
City.CityID,
City.City,
Customer.CustomerID,
Customer.LastName,
Address.AddressID,
Address.Address,
).
WHERE(City.City.EQ(String("London")).OR(City.City.EQ(String("York")))).
ORDER_BY(City.CityID, Address.AddressID, Customer.CustomerID)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT city.city_id AS "city.city_id",
city.city AS "city.city",
customer.customer_id AS "customer.customer_id",
customer.last_name AS "customer.last_name",
address.address_id AS "address.address_id",
address.address AS "address.address"
FROM dvds.city
INNER JOIN dvds.address ON (address.city_id = city.city_id)
INNER JOIN dvds.customer ON (customer.address_id = address.address_id)
WHERE (city.city = 'London') OR (city.city = 'York')
ORDER BY city.city_id, address.address_id, customer.customer_id;
`, "London", "York")
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 2)
testutils.AssertJSON(t, dest, `
[
{
"CityID": 312,
"CityName": "London",
"Customers": [
{
"CustomerID": 252,
"LastName": "Hoffman",
"Address": {
"AddressID": 256,
"AddressLine": "1497 Yuzhou Drive"
}
},
{
"CustomerID": 512,
"LastName": "Vines",
"Address": {
"AddressID": 517,
"AddressLine": "548 Uruapan Street"
}
}
]
},
{
"CityID": 589,
"CityName": "York",
"Customers": [
{
"CustomerID": 497,
"LastName": "Sledge",
"Address": {
"AddressID": 502,
"AddressLine": "1515 Korla Way"
}
}
]
}
]
`)
}
func TestJoinQuerySliceWithPtrs(t *testing.T) {
type FilmsPerLanguage struct {
Language model.Language
Film *[]*model.Film
}
limit := int64(3)
query := Film.INNER_JOIN(Language, Film.LanguageID.EQ(Language.LanguageID)).
SELECT(Language.AllColumns, Film.AllColumns).
LIMIT(limit)
filmsPerLanguageWithPtrs := []*FilmsPerLanguage{}
err := query.Query(db, &filmsPerLanguageWithPtrs)
require.NoError(t, err)
require.Equal(t, len(filmsPerLanguageWithPtrs), 1)
require.Equal(t, len(*filmsPerLanguageWithPtrs[0].Film), int(limit))
}
func TestSelect_WithoutUniqueColumnSelected(t *testing.T) {
query := Customer.SELECT(Customer.FirstName, Customer.LastName, Customer.Email)
customers := []model.Customer{}
err := query.Query(db, &customers)
require.NoError(t, err)
//spew.Dump(customers)
require.Equal(t, len(customers), 599)
}
func TestSelectOrderByAscDesc(t *testing.T) {
customersAsc := []model.Customer{}
err := Customer.SELECT(Customer.CustomerID, Customer.FirstName, Customer.LastName).
ORDER_BY(Customer.FirstName.ASC()).
Query(db, &customersAsc)
require.NoError(t, err)
firstCustomerAsc := customersAsc[0]
lastCustomerAsc := customersAsc[len(customersAsc)-1]
customersDesc := []model.Customer{}
err = Customer.SELECT(Customer.CustomerID, Customer.FirstName, Customer.LastName).
ORDER_BY(Customer.FirstName.DESC()).
Query(db, &customersDesc)
require.NoError(t, err)
firstCustomerDesc := customersDesc[0]
lastCustomerDesc := customersDesc[len(customersAsc)-1]
testutils.AssertDeepEqual(t, firstCustomerAsc, lastCustomerDesc)
testutils.AssertDeepEqual(t, lastCustomerAsc, firstCustomerDesc)
customersAscDesc := []model.Customer{}
err = Customer.SELECT(Customer.CustomerID, Customer.FirstName, Customer.LastName).
ORDER_BY(Customer.FirstName.ASC(), Customer.LastName.DESC()).
Query(db, &customersAscDesc)
require.NoError(t, err)
customerAscDesc326 := model.Customer{
CustomerID: 67,
FirstName: "Kelly",
LastName: "Torres",
}
customerAscDesc327 := model.Customer{
CustomerID: 546,
FirstName: "Kelly",
LastName: "Knott",
}
testutils.AssertDeepEqual(t, customerAscDesc326, customersAscDesc[326])
testutils.AssertDeepEqual(t, customerAscDesc327, customersAscDesc[327])
}
func TestSelectFullJoin(t *testing.T) {
expectedSQL := `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active",
address.address_id AS "address.address_id",
address.address AS "address.address",
address.address2 AS "address.address2",
address.district AS "address.district",
address.city_id AS "address.city_id",
address.postal_code AS "address.postal_code",
address.phone AS "address.phone",
address.last_update AS "address.last_update"
FROM dvds.customer
FULL JOIN dvds.address ON (customer.address_id = address.address_id)
ORDER BY customer.customer_id ASC;
`
query := Customer.
FULL_JOIN(Address, Customer.AddressID.EQ(Address.AddressID)).
SELECT(Customer.AllColumns, Address.AllColumns).
ORDER_BY(Customer.CustomerID.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL)
allCustomersAndAddress := []struct {
Address *model.Address
Customer *model.Customer
}{}
err := query.Query(db, &allCustomersAndAddress)
require.NoError(t, err)
require.Equal(t, len(allCustomersAndAddress), 603)
testutils.AssertDeepEqual(t, allCustomersAndAddress[0].Customer, &customer0)
require.True(t, allCustomersAndAddress[0].Address != nil)
lastCustomerAddress := allCustomersAndAddress[len(allCustomersAndAddress)-1]
require.True(t, lastCustomerAddress.Customer == nil)
require.True(t, lastCustomerAddress.Address != nil)
}
func TestSelectFullCrossJoin(t *testing.T) {
expectedSQL := `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active",
address.address_id AS "address.address_id",
address.address AS "address.address",
address.address2 AS "address.address2",
address.district AS "address.district",
address.city_id AS "address.city_id",
address.postal_code AS "address.postal_code",
address.phone AS "address.phone",
address.last_update AS "address.last_update"
FROM dvds.customer
CROSS JOIN dvds.address
ORDER BY customer.customer_id ASC
LIMIT 1000;
`
query := Customer.
CROSS_JOIN(Address).
SELECT(Customer.AllColumns, Address.AllColumns).
ORDER_BY(Customer.CustomerID.ASC()).
LIMIT(1000)
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(1000))
var customerAddresCrosJoined []struct {
model.Customer
model.Address
}
err := query.Query(db, &customerAddresCrosJoined)
require.Equal(t, len(customerAddresCrosJoined), 1000)
require.NoError(t, err)
}
func TestSelectSelfJoin(t *testing.T) {
expectedSQL := `
SELECT f1.film_id AS "f1.film_id",
f1.title AS "f1.title",
f1.description AS "f1.description",
f1.release_year AS "f1.release_year",
f1.language_id AS "f1.language_id",
f1.rental_duration AS "f1.rental_duration",
f1.rental_rate AS "f1.rental_rate",
f1.length AS "f1.length",
f1.replacement_cost AS "f1.replacement_cost",
f1.rating AS "f1.rating",
f1.last_update AS "f1.last_update",
f1.special_features AS "f1.special_features",
f1.fulltext AS "f1.fulltext",
f2.film_id AS "f2.film_id",
f2.title AS "f2.title",
f2.description AS "f2.description",
f2.release_year AS "f2.release_year",
f2.language_id AS "f2.language_id",
f2.rental_duration AS "f2.rental_duration",
f2.rental_rate AS "f2.rental_rate",
f2.length AS "f2.length",
f2.replacement_cost AS "f2.replacement_cost",
f2.rating AS "f2.rating",
f2.last_update AS "f2.last_update",
f2.special_features AS "f2.special_features",
f2.fulltext AS "f2.fulltext"
FROM dvds.film AS f1
INNER JOIN dvds.film AS f2 ON ((f1.film_id < f2.film_id) AND (f1.length = f2.length))
ORDER BY f1.film_id ASC;
`
f1 := Film.AS("f1")
f2 := Film.AS("f2")
query := f1.
INNER_JOIN(f2, f1.FilmID.LT(f2.FilmID).AND(f1.Length.EQ(f2.Length))).
SELECT(f1.AllColumns, f2.AllColumns).
ORDER_BY(f1.FilmID.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL)
type F1 model.Film
type F2 model.Film
theSameLengthFilms := []struct {
F1 F1
F2 F2
}{}
err := query.Query(db, &theSameLengthFilms)
require.NoError(t, err)
//spew.Dump(theSameLengthFilms)
//require.Equal(t, len(theSameLengthFilms), 100)
}
func TestSelectAliasColumn(t *testing.T) {
expectedSQL := `
SELECT f1.title AS "thesame_length_films.title1",
f2.title AS "thesame_length_films.title2",
f1.length AS "thesame_length_films.length"
FROM dvds.film AS f1
INNER JOIN dvds.film AS f2 ON ((f1.film_id != f2.film_id) AND (f1.length = f2.length))
ORDER BY f1.length ASC, f1.title ASC, f2.title ASC
LIMIT 1000;
`
f1 := Film.AS("f1")
f2 := Film.AS("f2")
f1.FilmID.EQ(Int(11))
query := f1.
INNER_JOIN(f2, f1.FilmID.NOT_EQ(f2.FilmID).AND(f1.Length.EQ(f2.Length))).
SELECT(f1.Title.AS("thesame_length_films.title1"),
f2.Title.AS("thesame_length_films.title2"),
f1.Length.AS("thesame_length_films.length")).
ORDER_BY(f1.Length.ASC(), f1.Title.ASC(), f2.Title.ASC()).
LIMIT(1000)
testutils.AssertDebugStatementSql(t, query, expectedSQL, int64(1000))
type thesameLengthFilms struct {
Title1 string
Title2 string
Length int16
}
films := []thesameLengthFilms{}
err := query.Query(db, &films)
require.NoError(t, err)
require.Equal(t, len(films), 1000)
testutils.AssertDeepEqual(t, films[0], thesameLengthFilms{"Alien Center", "Iron Moon", 46})
}
func TestSubQuery(t *testing.T) {
rRatingFilms :=
SELECT(
Film.FilmID,
Film.Title,
Film.Rating,
).FROM(
Film,
).WHERE(
Film.Rating.EQ(enum.MpaaRating.R),
).AsTable("rFilms")
rFilmID := Film.FilmID.From(rRatingFilms)
stmt :=
SELECT(
rRatingFilms.AllColumns(),
Actor.AllColumns,
FilmActor.AllColumns,
).FROM(
rRatingFilms.
INNER_JOIN(FilmActor, FilmActor.FilmID.EQ(rFilmID)).
INNER_JOIN(Actor, FilmActor.ActorID.EQ(Actor.ActorID)),
).WHERE(
rFilmID.LT(Int(50)),
).ORDER_BY(
rFilmID.ASC(),
Actor.ActorID.ASC(),
)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT "rFilms"."film.film_id" AS "film.film_id",
"rFilms"."film.title" AS "film.title",
"rFilms"."film.rating" AS "film.rating",
actor.actor_id AS "actor.actor_id",
actor.first_name AS "actor.first_name",
actor.last_name AS "actor.last_name",
actor.last_update AS "actor.last_update",
film_actor.actor_id AS "film_actor.actor_id",
film_actor.film_id AS "film_actor.film_id",
film_actor.last_update AS "film_actor.last_update"
FROM (
SELECT film.film_id AS "film.film_id",
film.title AS "film.title",
film.rating AS "film.rating"
FROM dvds.film
WHERE film.rating = 'R'
) AS "rFilms"
INNER JOIN dvds.film_actor ON (film_actor.film_id = "rFilms"."film.film_id")
INNER JOIN dvds.actor ON (film_actor.actor_id = actor.actor_id)
WHERE "rFilms"."film.film_id" < 50
ORDER BY "rFilms"."film.film_id" ASC, actor.actor_id ASC;
`)
var dest []struct {
model.Film
Actors []model.Actor
}
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Len(t, dest, 10)
testutils.AssertJSON(t, dest[0], `
{
"FilmID": 8,
"Title": "Airport Pollock",
"Description": null,
"ReleaseYear": null,
"LanguageID": 0,
"RentalDuration": 0,
"RentalRate": 0,
"Length": null,
"ReplacementCost": 0,
"Rating": "R",
"LastUpdate": "0001-01-01T00:00:00Z",
"SpecialFeatures": null,
"Fulltext": "",
"Actors": [
{
"ActorID": 55,
"FirstName": "Fay",
"LastName": "Kilmer",
"LastUpdate": "2013-05-26T14:47:57.62Z"
},
{
"ActorID": 96,
"FirstName": "Gene",
"LastName": "Willis",
"LastUpdate": "2013-05-26T14:47:57.62Z"
},
{
"ActorID": 110,
"FirstName": "Susan",
"LastName": "Davis",
"LastUpdate": "2013-05-26T14:47:57.62Z"
},
{
"ActorID": 138,
"FirstName": "Lucille",
"LastName": "Dee",
"LastUpdate": "2013-05-26T14:47:57.62Z"
}
]
}
`)
}
func TestSelectFunctions(t *testing.T) {
expectedQuery := `
SELECT MAX(film.rental_rate) AS "max_film_rate"
FROM dvds.film;
`
query := Film.SELECT(
MAXf(Film.RentalRate).AS("max_film_rate"),
)
testutils.AssertDebugStatementSql(t, query, expectedQuery)
ret := struct {
MaxFilmRate float64
}{}
err := query.Query(db, &ret)
require.NoError(t, err)
require.Equal(t, ret.MaxFilmRate, 4.99)
}
func TestSelectQueryScalar(t *testing.T) {
expectedSQL := `
SELECT film.film_id AS "film.film_id",
film.title AS "film.title",
film.description AS "film.description",
film.release_year AS "film.release_year",
film.language_id AS "film.language_id",
film.rental_duration AS "film.rental_duration",
film.rental_rate AS "film.rental_rate",
film.length AS "film.length",
film.replacement_cost AS "film.replacement_cost",
film.rating AS "film.rating",
film.last_update AS "film.last_update",
film.special_features AS "film.special_features",
film.fulltext AS "film.fulltext"
FROM dvds.film
WHERE film.rental_rate = (
SELECT MAX(film.rental_rate)
FROM dvds.film
)
ORDER BY film.film_id ASC;
`
maxFilmRentalRate := FloatExp(
Film.
SELECT(MAXf(Film.RentalRate)),
)
query := Film.
SELECT(Film.AllColumns).
WHERE(Film.RentalRate.EQ(maxFilmRentalRate)).
ORDER_BY(Film.FilmID.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL)
maxRentalRateFilms := []model.Film{}
err := query.Query(db, &maxRentalRateFilms)
require.NoError(t, err)
require.Equal(t, len(maxRentalRateFilms), 336)
gRating := model.MpaaRating_G
testutils.AssertDeepEqual(t, maxRentalRateFilms[0], model.Film{
FilmID: 2,
Title: "Ace Goldfinger",
Description: testutils.StringPtr("A Astounding Epistle of a Database Administrator And a Explorer who must Find a Car in Ancient China"),
ReleaseYear: testutils.Int32Ptr(2006),
LanguageID: 1,
RentalRate: 4.99,
Length: testutils.Int16Ptr(48),
ReplacementCost: 12.99,
Rating: &gRating,
RentalDuration: 3,
LastUpdate: *testutils.TimestampWithoutTimeZone("2013-05-26 14:50:58.951", 3),
SpecialFeatures: testutils.StringPtr("{Trailers,\"Deleted Scenes\"}"),
Fulltext: "'ace':1 'administr':9 'ancient':19 'astound':4 'car':17 'china':20 'databas':8 'epistl':5 'explor':12 'find':15 'goldfing':2 'must':14",
})
}
func TestSelectGroupByHaving(t *testing.T) {
expectedSQL := `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active",
SUM(payment.amount) AS "amount.sum",
AVG(payment.amount) AS "amount.avg",
MAX(payment.payment_date) AS "amount.max_date",
MAX(payment.amount) AS "amount.max",
MIN(payment.payment_date) AS "amount.min_date",
MIN(payment.amount) AS "amount.min",
COUNT(payment.amount) AS "amount.count"
FROM dvds.payment
INNER JOIN dvds.customer ON (customer.customer_id = payment.customer_id)
GROUP BY customer.customer_id
HAVING SUM(payment.amount) > 125.6
ORDER BY customer.customer_id, SUM(payment.amount) ASC;
`
query := Payment.
INNER_JOIN(Customer, Customer.CustomerID.EQ(Payment.CustomerID)).
SELECT(
Customer.AllColumns,
SUMf(Payment.Amount).AS("amount.sum"),
AVG(Payment.Amount).AS("amount.avg"),
MAX(Payment.PaymentDate).AS("amount.max_date"),
MAXf(Payment.Amount).AS("amount.max"),
MIN(Payment.PaymentDate).AS("amount.min_date"),
MINf(Payment.Amount).AS("amount.min"),
COUNT(Payment.Amount).AS("amount.count"),
).
GROUP_BY(Customer.CustomerID).
HAVING(
SUMf(Payment.Amount).GT(Float(125.6)),
).
ORDER_BY(
Customer.CustomerID, SUMf(Payment.Amount).ASC(),
)
//fmt.Println(query.DebugSql())
testutils.AssertDebugStatementSql(t, query, expectedSQL, float64(125.6))
var dest []struct {
model.Customer
Amount struct {
Sum float64
Avg float64
Max float64
Min float64
Count int64
} `alias:"amount"`
}
err := query.Query(db, &dest)
require.NoError(t, err)
//testutils.PrintJson(dest)
require.Equal(t, len(dest), 104)
//testutils.SaveJsonFile(dest, "postgres/testdata/customer_payment_sum.json")
testutils.AssertJSONFile(t, dest, "./testdata/results/postgres/customer_payment_sum.json")
}
func TestSelectGroupBy2(t *testing.T) {
expectedSQL := `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active",
customer_payment_sum.amount_sum AS "CustomerWithAmounts.AmountSum"
FROM dvds.customer
INNER JOIN (
SELECT payment.customer_id AS "payment.customer_id",
SUM(payment.amount) AS "amount_sum"
FROM dvds.payment
GROUP BY payment.customer_id
) AS customer_payment_sum ON (customer.customer_id = customer_payment_sum."payment.customer_id")
ORDER BY customer_payment_sum.amount_sum ASC;
`
customersPayments := Payment.
SELECT(
Payment.CustomerID,
SUMf(Payment.Amount).AS("amount_sum"),
).
GROUP_BY(Payment.CustomerID).
AsTable("customer_payment_sum")
customerID := Payment.CustomerID.From(customersPayments)
amountSum := FloatColumn("amount_sum").From(customersPayments)
query := Customer.
INNER_JOIN(customersPayments, Customer.CustomerID.EQ(customerID)).
SELECT(
Customer.AllColumns,
amountSum.AS("CustomerWithAmounts.AmountSum"),
).
ORDER_BY(amountSum.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL)
type CustomerWithAmounts struct {
Customer *model.Customer
AmountSum float64
}
customersWithAmounts := []CustomerWithAmounts{}
err := query.Query(db, &customersWithAmounts)
require.NoError(t, err)
require.Equal(t, len(customersWithAmounts), 599)
testutils.AssertDeepEqual(t, customersWithAmounts[0].Customer, &model.Customer{
CustomerID: 318,
StoreID: 1,
FirstName: "Brian",
LastName: "Wyman",
AddressID: 323,
Email: testutils.StringPtr("brian.wyman@sakilacustomer.org"),
Activebool: true,
CreateDate: *testutils.TimestampWithoutTimeZone("2006-02-14 00:00:00", 0),
LastUpdate: testutils.TimestampWithoutTimeZone("2013-05-26 14:49:45.738", 3),
Active: testutils.Int32Ptr(1),
})
require.Equal(t, customersWithAmounts[0].AmountSum, 27.93)
}
func TestSelectStaff(t *testing.T) {
staffs := []model.Staff{}
err := Staff.SELECT(Staff.AllColumns).Query(db, &staffs)
require.NoError(t, err)
testutils.AssertJSON(t, staffs, `
[
{
"StaffID": 1,
"FirstName": "Mike",
"LastName": "Hillyer",
"AddressID": 3,
"Email": "Mike.Hillyer@sakilastaff.com",
"StoreID": 1,
"Active": true,
"Username": "Mike",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": "iVBORw0KWgo="
},
{
"StaffID": 2,
"FirstName": "Jon",
"LastName": "Stephens",
"AddressID": 4,
"Email": "Jon.Stephens@sakilastaff.com",
"StoreID": 2,
"Active": true,
"Username": "Jon",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": null
}
]
`)
}
func TestSelectTimeColumns(t *testing.T) {
expectedSQL := `
SELECT payment.payment_id AS "payment.payment_id",
payment.customer_id AS "payment.customer_id",
payment.staff_id AS "payment.staff_id",
payment.rental_id AS "payment.rental_id",
payment.amount AS "payment.amount",
payment.payment_date AS "payment.payment_date"
FROM dvds.payment
WHERE payment.payment_date < '2007-02-14 22:16:01'::timestamp without time zone
ORDER BY payment.payment_date ASC;
`
query := Payment.SELECT(Payment.AllColumns).
WHERE(Payment.PaymentDate.LT(Timestamp(2007, time.February, 14, 22, 16, 01, 0))).
ORDER_BY(Payment.PaymentDate.ASC())
testutils.AssertDebugStatementSql(t, query, expectedSQL, "2007-02-14 22:16:01")
payments := []model.Payment{}
err := query.Query(db, &payments)
require.NoError(t, err)
//spew.Dump(payments)
require.Equal(t, len(payments), 9)
testutils.AssertDeepEqual(t, payments[0], model.Payment{
PaymentID: 17793,
CustomerID: 416,
StaffID: 2,
RentalID: 1158,
Amount: 2.99,
PaymentDate: *testutils.TimestampWithoutTimeZone("2007-02-14 21:21:59.996577", 6),
})
}
func TestUnion(t *testing.T) {
expectedQuery := `
(
SELECT payment.payment_id AS "payment.payment_id",
payment.amount AS "payment.amount"
FROM dvds.payment
WHERE payment.amount <= 100
)
UNION ALL
(
SELECT payment.payment_id AS "payment.payment_id",
payment.amount AS "payment.amount"
FROM dvds.payment
WHERE payment.amount >= 200
)
ORDER BY "payment.payment_id" ASC, "payment.amount" DESC
LIMIT 10
OFFSET 20;
`
query := UNION_ALL(
Payment.
SELECT(Payment.PaymentID.AS("payment.payment_id"), Payment.Amount).
WHERE(Payment.Amount.LT_EQ(Float(100))),
Payment.
SELECT(Payment.PaymentID, Payment.Amount).
WHERE(Payment.Amount.GT_EQ(Float(200))),
).
ORDER_BY(IntegerColumn("payment.payment_id").ASC(), Payment.Amount.DESC()).
LIMIT(10).
OFFSET(20)
//fmt.Println(query.DebugSql())
testutils.AssertDebugStatementSql(t, query, expectedQuery, float64(100), float64(200), int64(10), int64(20))
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 10)
testutils.AssertDeepEqual(t, dest[0], model.Payment{
PaymentID: 17523,
Amount: 4.99,
})
testutils.AssertDeepEqual(t, dest[1], model.Payment{
PaymentID: 17524,
Amount: 0.99,
})
testutils.AssertDeepEqual(t, dest[9], model.Payment{
PaymentID: 17532,
Amount: 8.99,
})
}
func TestAllSetOperators(t *testing.T) {
var select1 = Payment.SELECT(Payment.AllColumns).WHERE(Payment.PaymentID.GT_EQ(Int(17600)).AND(Payment.PaymentID.LT(Int(17610))))
var select2 = Payment.SELECT(Payment.AllColumns).WHERE(Payment.PaymentID.GT_EQ(Int(17620)).AND(Payment.PaymentID.LT(Int(17630))))
t.Run("UNION", func(t *testing.T) {
query := select1.UNION(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 20)
})
t.Run("UNION_ALL", func(t *testing.T) {
query := select1.UNION_ALL(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 20)
})
t.Run("INTERSECT", func(t *testing.T) {
query := select1.INTERSECT(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 0)
})
t.Run("INTERSECT_ALL", func(t *testing.T) {
query := select1.INTERSECT_ALL(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 0)
})
t.Run("EXCEPT", func(t *testing.T) {
query := select1.EXCEPT(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 10)
})
t.Run("EXCEPT_ALL", func(t *testing.T) {
query := select1.EXCEPT_ALL(select2)
dest := []model.Payment{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 10)
})
}
func TestSelectWithCase(t *testing.T) {
expectedQuery := `
SELECT (CASE payment.staff_id WHEN 1 THEN 'ONE' WHEN 2 THEN 'TWO' WHEN 3 THEN 'THREE' ELSE 'OTHER' END) AS "staff_id_num"
FROM dvds.payment
ORDER BY payment.payment_id ASC
LIMIT 20;
`
query := Payment.SELECT(
CASE(Payment.StaffID).
WHEN(Int(1)).THEN(String("ONE")).
WHEN(Int(2)).THEN(String("TWO")).
WHEN(Int(3)).THEN(String("THREE")).
ELSE(String("OTHER")).AS("staff_id_num"),
).
ORDER_BY(Payment.PaymentID.ASC()).
LIMIT(20)
testutils.AssertDebugStatementSql(t, query, expectedQuery, int64(1), "ONE", int64(2), "TWO", int64(3), "THREE", "OTHER", int64(20))
dest := []struct {
StaffIDNum string
}{}
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 20)
require.Equal(t, dest[0].StaffIDNum, "TWO")
require.Equal(t, dest[1].StaffIDNum, "ONE")
}
func getRowLockTestData() map[RowLock]string {
return map[RowLock]string{
UPDATE(): "UPDATE",
NO_KEY_UPDATE(): "NO KEY UPDATE",
SHARE(): "SHARE",
KEY_SHARE(): "KEY SHARE",
}
}
func TestRowLock(t *testing.T) {
expectedSQL := `
SELECT *
FROM dvds.address
LIMIT 3
FOR`
query := Address.
SELECT(STAR).
LIMIT(3)
for lockType, lockTypeStr := range getRowLockTestData() {
query.FOR(lockType)
testutils.AssertDebugStatementSql(t, query, expectedSQL+" "+lockTypeStr+";\n", int64(3))
tx, _ := db.Begin()
res, err := query.Exec(tx)
require.NoError(t, err)
rowsAffected, _ := res.RowsAffected()
require.Equal(t, rowsAffected, int64(3))
err = tx.Rollback()
require.NoError(t, err)
}
for lockType, lockTypeStr := range getRowLockTestData() {
query.FOR(lockType.NOWAIT())
testutils.AssertDebugStatementSql(t, query, expectedSQL+" "+lockTypeStr+" NOWAIT;\n", int64(3))
tx, _ := db.Begin()
res, err := query.Exec(tx)
require.NoError(t, err)
rowsAffected, _ := res.RowsAffected()
require.Equal(t, rowsAffected, int64(3))
err = tx.Rollback()
require.NoError(t, err)
}
for lockType, lockTypeStr := range getRowLockTestData() {
query.FOR(lockType.SKIP_LOCKED())
testutils.AssertDebugStatementSql(t, query, expectedSQL+" "+lockTypeStr+" SKIP LOCKED;\n", int64(3))
tx, _ := db.Begin()
res, err := query.Exec(tx)
require.NoError(t, err)
rowsAffected, _ := res.RowsAffected()
require.Equal(t, rowsAffected, int64(3))
err = tx.Rollback()
require.NoError(t, err)
}
}
func TestQuickStart(t *testing.T) {
var expectedSQL = `
SELECT actor.actor_id AS "actor.actor_id",
actor.first_name AS "actor.first_name",
actor.last_name AS "actor.last_name",
actor.last_update AS "actor.last_update",
film.film_id AS "film.film_id",
film.title AS "film.title",
film.description AS "film.description",
film.release_year AS "film.release_year",
film.language_id AS "film.language_id",
film.rental_duration AS "film.rental_duration",
film.rental_rate AS "film.rental_rate",
film.length AS "film.length",
film.replacement_cost AS "film.replacement_cost",
film.rating AS "film.rating",
film.last_update AS "film.last_update",
film.special_features AS "film.special_features",
film.fulltext AS "film.fulltext",
language.language_id AS "language.language_id",
language.name AS "language.name",
language.last_update AS "language.last_update",
category.category_id AS "category.category_id",
category.name AS "category.name",
category.last_update AS "category.last_update"
FROM dvds.actor
INNER JOIN dvds.film_actor ON (actor.actor_id = film_actor.actor_id)
INNER JOIN dvds.film ON (film.film_id = film_actor.film_id)
INNER JOIN dvds.language ON (language.language_id = film.language_id)
INNER JOIN dvds.film_category ON (film_category.film_id = film.film_id)
INNER JOIN dvds.category ON (category.category_id = film_category.category_id)
WHERE ((language.name = 'English') AND (category.name != 'Action')) AND (film.length > 180)
ORDER BY actor.actor_id ASC, film.film_id ASC;
`
stmt := SELECT(
Actor.ActorID, Actor.FirstName, Actor.LastName, Actor.LastUpdate, // list of all actor columns (equivalent to Actor.AllColumns)
Film.AllColumns, // list of all film columns (equivalent to Film.FilmID, Film.Title, ...)
Language.AllColumns,
Category.AllColumns,
).FROM(
Actor.
INNER_JOIN(FilmActor, Actor.ActorID.EQ(FilmActor.ActorID)). // INNER JOIN Actor with FilmActor on condition Actor.ActorID = FilmActor.ActorID
INNER_JOIN(Film, Film.FilmID.EQ(FilmActor.FilmID)). // then with Film, Language, FilmCategory and Category.
INNER_JOIN(Language, Language.LanguageID.EQ(Film.LanguageID)).
INNER_JOIN(FilmCategory, FilmCategory.FilmID.EQ(Film.FilmID)).
INNER_JOIN(Category, Category.CategoryID.EQ(FilmCategory.CategoryID)),
).WHERE(
Language.Name.EQ(String("English")). // note that every column has type.
AND(Category.Name.NOT_EQ(String("Action"))). // String column Language.Name and Category.Name can be compared only with string expression
AND(Film.Length.GT(Int(180))), // Film.Length is integer column and can be compared only with integer expression
).ORDER_BY(
Actor.ActorID.ASC(),
Film.FilmID.ASC(),
)
testutils.AssertDebugStatementSql(t, stmt, expectedSQL, "English", "Action", int64(180))
var dest []struct {
model.Actor
Films []struct {
model.Film
Language model.Language
Categories []model.Category
}
}
err := stmt.Query(db, &dest)
require.NoError(t, err)
//jsonSave("./testdata/quick-start-dest.json", dest)
testutils.AssertJSONFile(t, dest, "./testdata/results/postgres/quick-start-dest.json")
var dest2 []struct {
model.Category
Films []model.Film
Actors []model.Actor
}
err = stmt.Query(db, &dest2)
require.NoError(t, err)
//jsonSave("./testdata/quick-start-dest2.json", dest2)
testutils.AssertJSONFile(t, dest2, "./testdata/results/postgres/quick-start-dest2.json")
}
func TestQuickStartWithSubQueries(t *testing.T) {
filmLogerThan180 := Film.
SELECT(Film.AllColumns).
WHERE(Film.Length.GT(Int(180))).
AsTable("films")
filmID := Film.FilmID.From(filmLogerThan180)
filmLanguageID := Film.LanguageID.From(filmLogerThan180)
categoriesNotAction := Category.
SELECT(Category.AllColumns).
WHERE(Category.Name.NOT_EQ(String("Action"))).
AsTable("categories")
categoryID := Category.CategoryID.From(categoriesNotAction)
stmt := Actor.
INNER_JOIN(FilmActor, Actor.ActorID.EQ(FilmActor.ActorID)).
INNER_JOIN(filmLogerThan180, filmID.EQ(FilmActor.FilmID)).
INNER_JOIN(Language, Language.LanguageID.EQ(filmLanguageID)).
INNER_JOIN(FilmCategory, FilmCategory.FilmID.EQ(filmID)).
INNER_JOIN(categoriesNotAction, categoryID.EQ(FilmCategory.CategoryID)).
SELECT(
Actor.AllColumns,
filmLogerThan180.AllColumns(),
Language.AllColumns,
categoriesNotAction.AllColumns(),
).ORDER_BY(
Actor.ActorID.ASC(),
filmID.ASC(),
)
var dest []struct {
model.Actor
Films []struct {
model.Film
Language model.Language
Categories []model.Category
}
}
err := stmt.Query(db, &dest)
require.NoError(t, err)
//jsonSave("./testdata/quick-start-dest.json", dest)
testutils.AssertJSONFile(t, dest, "./testdata/results/postgres/quick-start-dest.json")
var dest2 []struct {
model.Category
Films []model.Film
Actors []model.Actor
}
err = stmt.Query(db, &dest2)
require.NoError(t, err)
//jsonSave("./testdata/quick-start-dest2.json", dest2)
testutils.AssertJSONFile(t, dest2, "./testdata/results/postgres/quick-start-dest2.json")
}
func TestExpressionWrappers(t *testing.T) {
query := SELECT(
BoolExp(Raw("true")),
IntExp(Raw("11")),
FloatExp(Raw("11.22")),
StringExp(Raw("'stringer'")),
TimeExp(Raw("'raw'")),
TimezExp(Raw("'raw'")),
TimestampExp(Raw("'raw'")),
TimestampzExp(Raw("'raw'")),
DateExp(Raw("'date'")),
)
testutils.AssertStatementSql(t, query, `
SELECT true,
11,
11.22,
'stringer',
'raw',
'raw',
'raw',
'raw',
'date';
`)
dest := []struct{}{}
err := query.Query(db, &dest)
require.NoError(t, err)
}
func TestWindowFunction(t *testing.T) {
var expectedSQL = `
SELECT AVG(payment.amount) OVER (),
AVG(payment.amount) OVER (PARTITION BY payment.customer_id),
MAX(payment.amount) OVER (ORDER BY payment.payment_date DESC),
MIN(payment.amount) OVER (PARTITION BY payment.customer_id ORDER BY payment.payment_date DESC),
SUM(payment.amount) OVER (PARTITION BY payment.customer_id ORDER BY payment.payment_date DESC ROWS BETWEEN 1 PRECEDING AND 6 FOLLOWING),
SUM(payment.amount) OVER (PARTITION BY payment.customer_id ORDER BY payment.payment_date DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING),
MAX(payment.customer_id) OVER (ORDER BY payment.payment_date DESC ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING),
MIN(payment.customer_id) OVER (PARTITION BY payment.customer_id ORDER BY payment.payment_date DESC),
SUM(payment.customer_id) OVER (PARTITION BY payment.customer_id ORDER BY payment.payment_date DESC),
ROW_NUMBER() OVER (ORDER BY payment.payment_date),
RANK() OVER (ORDER BY payment.payment_date),
DENSE_RANK() OVER (ORDER BY payment.payment_date),
CUME_DIST() OVER (ORDER BY payment.payment_date),
NTILE(11) OVER (ORDER BY payment.payment_date),
LAG(payment.amount) OVER (ORDER BY payment.payment_date),
LAG(payment.amount) OVER (ORDER BY payment.payment_date),
LAG(payment.amount, 2, payment.amount) OVER (ORDER BY payment.payment_date),
LAG(payment.amount, 2, $1) OVER (ORDER BY payment.payment_date),
LEAD(payment.amount) OVER (ORDER BY payment.payment_date),
LEAD(payment.amount) OVER (ORDER BY payment.payment_date),
LEAD(payment.amount, 2, payment.amount) OVER (ORDER BY payment.payment_date),
LEAD(payment.amount, 2, $2) OVER (ORDER BY payment.payment_date),
FIRST_VALUE(payment.amount) OVER (ORDER BY payment.payment_date),
LAST_VALUE(payment.amount) OVER (ORDER BY payment.payment_date),
NTH_VALUE(payment.amount, 3) OVER (ORDER BY payment.payment_date)
FROM dvds.payment
WHERE payment.payment_id < $3
GROUP BY payment.amount, payment.customer_id, payment.payment_date;
`
query := Payment.
SELECT(
AVG(Payment.Amount).OVER(),
AVG(Payment.Amount).OVER(PARTITION_BY(Payment.CustomerID)),
MAXf(Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate.DESC())),
MINf(Payment.Amount).OVER(PARTITION_BY(Payment.CustomerID).ORDER_BY(Payment.PaymentDate.DESC())),
SUMf(Payment.Amount).OVER(PARTITION_BY(Payment.CustomerID).
ORDER_BY(Payment.PaymentDate.DESC()).ROWS(PRECEDING(1), FOLLOWING(6))),
SUMf(Payment.Amount).OVER(PARTITION_BY(Payment.CustomerID).
ORDER_BY(Payment.PaymentDate.DESC()).RANGE(PRECEDING(UNBOUNDED), FOLLOWING(UNBOUNDED))),
MAXi(Payment.CustomerID).OVER(ORDER_BY(Payment.PaymentDate.DESC()).ROWS(CURRENT_ROW, FOLLOWING(UNBOUNDED))),
MINi(Payment.CustomerID).OVER(PARTITION_BY(Payment.CustomerID).ORDER_BY(Payment.PaymentDate.DESC())),
SUMi(Payment.CustomerID).OVER(PARTITION_BY(Payment.CustomerID).ORDER_BY(Payment.PaymentDate.DESC())),
ROW_NUMBER().OVER(ORDER_BY(Payment.PaymentDate)),
RANK().OVER(ORDER_BY(Payment.PaymentDate)),
DENSE_RANK().OVER(ORDER_BY(Payment.PaymentDate)),
CUME_DIST().OVER(ORDER_BY(Payment.PaymentDate)),
NTILE(11).OVER(ORDER_BY(Payment.PaymentDate)),
LAG(Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
LAG(Payment.Amount, 2).OVER(ORDER_BY(Payment.PaymentDate)),
LAG(Payment.Amount, 2, Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
LAG(Payment.Amount, 2, 100).OVER(ORDER_BY(Payment.PaymentDate)),
LEAD(Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
LEAD(Payment.Amount, 2).OVER(ORDER_BY(Payment.PaymentDate)),
LEAD(Payment.Amount, 2, Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
LEAD(Payment.Amount, 2, 100).OVER(ORDER_BY(Payment.PaymentDate)),
FIRST_VALUE(Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
LAST_VALUE(Payment.Amount).OVER(ORDER_BY(Payment.PaymentDate)),
NTH_VALUE(Payment.Amount, 3).OVER(ORDER_BY(Payment.PaymentDate)),
).GROUP_BY(Payment.Amount, Payment.CustomerID, Payment.PaymentDate).
WHERE(Payment.PaymentID.LT(Int(10)))
//fmt.Println(query.Sql())
testutils.AssertStatementSql(t, query, expectedSQL, 100, 100, int64(10))
dest := []struct{}{}
err := query.Query(db, &dest)
require.NoError(t, err)
}
func TestWindowClause(t *testing.T) {
var expectedSQL = `
SELECT AVG(payment.amount) OVER (),
AVG(payment.amount) OVER (w1),
AVG(payment.amount) OVER (w2 ORDER BY payment.customer_id RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING),
AVG(payment.amount) OVER (w3 RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING)
FROM dvds.payment
WHERE payment.payment_id < $1
WINDOW w1 AS (PARTITION BY payment.payment_date), w2 AS (w1), w3 AS (w2 ORDER BY payment.customer_id)
ORDER BY payment.customer_id;
`
query := Payment.SELECT(
AVG(Payment.Amount).OVER(),
AVG(Payment.Amount).OVER(Window("w1")),
AVG(Payment.Amount).OVER(
Window("w2").
ORDER_BY(Payment.CustomerID).
RANGE(PRECEDING(UNBOUNDED), FOLLOWING(UNBOUNDED)),
),
AVG(Payment.Amount).OVER(Window("w3").RANGE(PRECEDING(UNBOUNDED), FOLLOWING(UNBOUNDED))),
).
WHERE(Payment.PaymentID.LT(Int(10))).
WINDOW("w1").AS(PARTITION_BY(Payment.PaymentDate)).
WINDOW("w2").AS(Window("w1")).
WINDOW("w3").AS(Window("w2").ORDER_BY(Payment.CustomerID)).
ORDER_BY(Payment.CustomerID)
//fmt.Println(query.Sql())
testutils.AssertStatementSql(t, query, expectedSQL, int64(10))
dest := []struct{}{}
err := query.Query(db, &dest)
require.NoError(t, err)
}
func TestSimpleView(t *testing.T) {
query := SELECT(
view.ActorInfo.AllColumns,
).
FROM(view.ActorInfo).
ORDER_BY(view.ActorInfo.ActorID).
LIMIT(10)
type ActorInfo struct {
ActorID int
FirstName string
LastName string
FilmInfo string
}
var dest []ActorInfo
err := query.Query(db, &dest)
require.NoError(t, err)
testutils.AssertJSON(t, dest[1:2], `
[
{
"ActorID": 2,
"FirstName": "Nick",
"LastName": "Wahlberg",
"FilmInfo": "Action: Bull Shawshank, Animation: Fight Jawbreaker, Children: Jersey Sassy, Classics: Dracula Crystal, Gilbert Pelican, Comedy: Mallrats United, Rushmore Mermaid, Documentary: Adaptation Holes, Drama: Wardrobe Phantom, Family: Apache Divine, Chisum Behavior, Indian Love, Maguire Apache, Foreign: Baby Hall, Happiness United, Games: Roof Champion, Music: Lucky Flying, New: Destiny Saturday, Flash Wars, Jekyll Frogmen, Mask Peach, Sci-Fi: Chainsaw Uptown, Goodfellas Salute, Travel: Liaisons Sweet, Smile Earring"
}
]
`)
}
func TestJoinViewWithTable(t *testing.T) {
query := SELECT(
view.CustomerList.AllColumns,
Rental.AllColumns,
).
FROM(view.CustomerList.
INNER_JOIN(Rental, view.CustomerList.ID.EQ(Rental.CustomerID)),
).
ORDER_BY(view.CustomerList.ID).
WHERE(view.CustomerList.ID.LT_EQ(Int(2)))
var dest []struct {
model.CustomerList `sql:"primary_key=ID"`
Rentals []model.Rental
}
//fmt.Println(query.DebugSql())
err := query.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 2)
require.Equal(t, len(dest[0].Rentals), 32)
require.Equal(t, len(dest[1].Rentals), 27)
}
func TestDynamicProjectionList(t *testing.T) {
var request struct {
ColumnsToSelect []string
ShowFullName bool
}
request.ColumnsToSelect = []string{"customer_id", "create_date"}
request.ShowFullName = true
// ...
projectionList := ProjectionList{}
for _, columnName := range request.ColumnsToSelect {
switch columnName {
case Customer.CustomerID.Name():
projectionList = append(projectionList, Customer.CustomerID)
case Customer.Email.Name():
projectionList = append(projectionList, Customer.Email)
case Customer.CreateDate.Name():
projectionList = append(projectionList, Customer.CreateDate)
}
}
var showFullName bool
if showFullName {
projectionList = append(projectionList, Customer.FirstName.CONCAT(Customer.LastName))
}
stmt := SELECT(projectionList).
FROM(Customer).
LIMIT(3)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT customer.customer_id AS "customer.customer_id",
customer.create_date AS "customer.create_date"
FROM dvds.customer
LIMIT 3;
`)
var dest []model.Customer
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, len(dest), 3)
}
func TestDynamicCondition(t *testing.T) {
var request struct {
CustomerID *int64
Email *string
Active *bool
}
request.CustomerID = testutils.Int64Ptr(1)
request.Active = testutils.BoolPtr(true)
// ...
condition := Bool(true)
if request.CustomerID != nil {
condition = condition.AND(Customer.CustomerID.EQ(Int(*request.CustomerID)))
}
if request.Email != nil {
condition = condition.AND(Customer.Email.EQ(String(*request.Email)))
}
if request.Active != nil {
condition = condition.AND(Customer.Activebool.EQ(Bool(*request.Active)))
}
stmt := SELECT(Customer.AllColumns).
FROM(Customer).
WHERE(condition)
testutils.AssertStatementSql(t, stmt, `
SELECT customer.customer_id AS "customer.customer_id",
customer.store_id AS "customer.store_id",
customer.first_name AS "customer.first_name",
customer.last_name AS "customer.last_name",
customer.email AS "customer.email",
customer.address_id AS "customer.address_id",
customer.activebool AS "customer.activebool",
customer.create_date AS "customer.create_date",
customer.last_update AS "customer.last_update",
customer.active AS "customer.active"
FROM dvds.customer
WHERE ($1::boolean AND (customer.customer_id = $2)) AND (customer.activebool = $3::boolean);
`, true, int64(1), true)
dest := []model.Customer{}
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Len(t, dest, 1)
testutils.AssertDeepEqual(t, dest[0], customer0)
}
func TestLateral(t *testing.T) {
languages := LATERAL(
SELECT(
Language.AllColumns,
).FROM(
Language,
).WHERE(
Language.Name.NOT_IN(String("spanish")).
AND(Film.LanguageID.EQ(Language.LanguageID)),
),
).AS("films")
stmt := SELECT(
Film.FilmID,
Film.Title,
languages.AllColumns(),
).FROM(
Film.CROSS_JOIN(languages),
).WHERE(
Film.FilmID.EQ(Int(1)),
).ORDER_BY(
Film.FilmID,
).LIMIT(1)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT film.film_id AS "film.film_id",
film.title AS "film.title",
films."language.language_id" AS "language.language_id",
films."language.name" AS "language.name",
films."language.last_update" AS "language.last_update"
FROM dvds.film
CROSS JOIN LATERAL (
SELECT language.language_id AS "language.language_id",
language.name AS "language.name",
language.last_update AS "language.last_update"
FROM dvds.language
WHERE (language.name NOT IN ('spanish')) AND (film.language_id = language.language_id)
) AS films
WHERE film.film_id = 1
ORDER BY film.film_id
LIMIT 1;
`)
type FilmLanguage struct {
model.Film
model.Language
}
var dest []FilmLanguage
err := stmt.Query(db, &dest)
require.NoError(t, err)
require.Equal(t, dest[0].Film.Title, "Academy Dinosaur")
require.Equal(t, dest[0].Language.Name, "English ")
t.Run("implicit cross join", func(t *testing.T) {
stmt2 := SELECT(
Film.FilmID,
Film.Title,
languages.AllColumns(),
).FROM(
Film,
languages,
).WHERE(
Film.FilmID.EQ(Int(1)),
).ORDER_BY(
Film.FilmID,
).LIMIT(1)
testutils.AssertDebugStatementSql(t, stmt2, `
SELECT film.film_id AS "film.film_id",
film.title AS "film.title",
films."language.language_id" AS "language.language_id",
films."language.name" AS "language.name",
films."language.last_update" AS "language.last_update"
FROM dvds.film,
LATERAL (
SELECT language.language_id AS "language.language_id",
language.name AS "language.name",
language.last_update AS "language.last_update"
FROM dvds.language
WHERE (language.name NOT IN ('spanish')) AND (film.language_id = language.language_id)
) AS films
WHERE film.film_id = 1
ORDER BY film.film_id
LIMIT 1;
`)
var dest2 []FilmLanguage
err2 := stmt2.Query(db, &dest2)
require.NoError(t, err2)
require.Equal(t, dest, dest2)
})
}
func TestSelectColumnListWithExcludedColumns(t *testing.T) {
t.Run("one column", func(t *testing.T) {
stmt := SELECT(
Address.AllColumns.Except(Address.LastUpdate),
).FROM(
Address,
)
testutils.AssertDebugStatementSql(t, stmt, `
SELECT address.address_id AS "address.address_id",
address.address AS "address.address",
address.address2 AS "address.address2",
address.district AS "address.district",
address.city_id AS "address.city_id",
address.postal_code AS "address.postal_code",
address.phone AS "address.phone"
FROM dvds.address;
`)
var dest []model.Address
require.NoError(t, stmt.Query(db, &dest))
require.Len(t, dest, 603)
})
t.Run("multiple columns", func(t *testing.T) {
expectedSQL := `
SELECT address.address_id AS "address.address_id",
address.address AS "address.address",
address.address2 AS "address.address2",
address.district AS "address.district",
address.city_id AS "address.city_id"
FROM dvds.address;
`
// list of columns
stmt := SELECT(
Address.AllColumns.Except(Address.PostalCode, Address.Phone, Address.LastUpdate),
).FROM(
Address,
)
testutils.AssertDebugStatementSql(t, stmt, expectedSQL)
// column list
excludedColumns := ColumnList{Address.PostalCode, Address.Phone, Address.LastUpdate, Film.Title} // Film.Title is ignored
stmt = SELECT(
Address.AllColumns.Except(excludedColumns),
).FROM(Address)
testutils.AssertDebugStatementSql(t, stmt, expectedSQL)
// column list with just column names
excludedColumns = ColumnList{StringColumn("postal_code"), StringColumn("phone"), TimestampColumn("last_update")}
stmt = SELECT(
Address.AllColumns.Except(excludedColumns),
).FROM(Address)
testutils.AssertDebugStatementSql(t, stmt, expectedSQL)
var dest []model.Address
require.NoError(t, stmt.Query(db, &dest))
require.Len(t, dest, 603)
})
}
type FilmWrap struct {
model.Film
Actors []ActorWrap
}
type ActorWrap struct {
model.Actor
Films []FilmWrap
}
func TestRecursionScanNxM(t *testing.T) {
stmt := SELECT(
Actor.AllColumns,
Film.AllColumns,
).FROM(
Actor.
INNER_JOIN(FilmActor, Actor.ActorID.EQ(FilmActor.ActorID)).
INNER_JOIN(Film, Film.FilmID.EQ(FilmActor.FilmID)),
).ORDER_BY(
Actor.ActorID,
Film.FilmID,
).LIMIT(100)
t.Run("film->actors", func(t *testing.T) {
var films []FilmWrap
err := stmt.Query(db, &films)
require.NoError(t, err)
require.Len(t, films, 95)
testutils.AssertJSON(t, films[:2], `
[
{
"FilmID": 1,
"Title": "Academy Dinosaur",
"Description": "A Epic Drama of a Feminist And a Mad Scientist who must Battle a Teacher in The Canadian Rockies",
"ReleaseYear": 2006,
"LanguageID": 1,
"RentalDuration": 6,
"RentalRate": 0.99,
"Length": 86,
"ReplacementCost": 20.99,
"Rating": "PG",
"LastUpdate": "2013-05-26T14:50:58.951Z",
"SpecialFeatures": "{\"Deleted Scenes\",\"Behind the Scenes\"}",
"Fulltext": "'academi':1 'battl':15 'canadian':20 'dinosaur':2 'drama':5 'epic':4 'feminist':8 'mad':11 'must':14 'rocki':21 'scientist':12 'teacher':17",
"Actors": [
{
"ActorID": 1,
"FirstName": "Penelope",
"LastName": "Guiness",
"LastUpdate": "2013-05-26T14:47:57.62Z",
"Films": null
}
]
},
{
"FilmID": 23,
"Title": "Anaconda Confessions",
"Description": "A Lacklusture Display of a Dentist And a Dentist who must Fight a Girl in Australia",
"ReleaseYear": 2006,
"LanguageID": 1,
"RentalDuration": 3,
"RentalRate": 0.99,
"Length": 92,
"ReplacementCost": 9.99,
"Rating": "R",
"LastUpdate": "2013-05-26T14:50:58.951Z",
"SpecialFeatures": "{Trailers,\"Deleted Scenes\"}",
"Fulltext": "'anaconda':1 'australia':18 'confess':2 'dentist':8,11 'display':5 'fight':14 'girl':16 'lacklustur':4 'must':13",
"Actors": [
{
"ActorID": 1,
"FirstName": "Penelope",
"LastName": "Guiness",
"LastUpdate": "2013-05-26T14:47:57.62Z",
"Films": null
},
{
"ActorID": 4,
"FirstName": "Jennifer",
"LastName": "Davis",
"LastUpdate": "2013-05-26T14:47:57.62Z",
"Films": null
}
]
}
]
`)
})
t.Run("actors->films", func(t *testing.T) {
var actors []ActorWrap
err := stmt.Query(db, &actors)
require.NoError(t, err)
require.Equal(t, len(actors), 5)
require.Equal(t, actors[0].ActorID, int32(1))
require.Equal(t, actors[0].FirstName, "Penelope")
require.Len(t, actors[0].Films, 19)
testutils.AssertJSON(t, actors[0].Films[:2], `
[
{
"FilmID": 1,
"Title": "Academy Dinosaur",
"Description": "A Epic Drama of a Feminist And a Mad Scientist who must Battle a Teacher in The Canadian Rockies",
"ReleaseYear": 2006,
"LanguageID": 1,
"RentalDuration": 6,
"RentalRate": 0.99,
"Length": 86,
"ReplacementCost": 20.99,
"Rating": "PG",
"LastUpdate": "2013-05-26T14:50:58.951Z",
"SpecialFeatures": "{\"Deleted Scenes\",\"Behind the Scenes\"}",
"Fulltext": "'academi':1 'battl':15 'canadian':20 'dinosaur':2 'drama':5 'epic':4 'feminist':8 'mad':11 'must':14 'rocki':21 'scientist':12 'teacher':17",
"Actors": null
},
{
"FilmID": 23,
"Title": "Anaconda Confessions",
"Description": "A Lacklusture Display of a Dentist And a Dentist who must Fight a Girl in Australia",
"ReleaseYear": 2006,
"LanguageID": 1,
"RentalDuration": 3,
"RentalRate": 0.99,
"Length": 92,
"ReplacementCost": 9.99,
"Rating": "R",
"LastUpdate": "2013-05-26T14:50:58.951Z",
"SpecialFeatures": "{Trailers,\"Deleted Scenes\"}",
"Fulltext": "'anaconda':1 'australia':18 'confess':2 'dentist':8,11 'display':5 'fight':14 'girl':16 'lacklustur':4 'must':13",
"Actors": null
}
]
`)
})
}
type StoreWrap struct {
model.Store
Staffs []StaffWrap
}
type StaffWrap struct {
model.Staff
Store StoreWrap
}
func TestRecursionScanNx1(t *testing.T) {
stmt := SELECT(
Store.AllColumns,
Staff.AllColumns,
).FROM(
Store.
INNER_JOIN(Staff, Staff.StoreID.EQ(Store.StoreID)),
).ORDER_BY(
Store.StoreID,
Staff.StaffID,
)
t.Run("store->staff", func(t *testing.T) {
var stores []StoreWrap
err := stmt.Query(db, &stores)
require.NoError(t, err)
require.Len(t, stores, 2)
testutils.AssertJSON(t, stores, `
[
{
"StoreID": 1,
"ManagerStaffID": 1,
"AddressID": 1,
"LastUpdate": "2006-02-15T09:57:12Z",
"Staffs": [
{
"StaffID": 1,
"FirstName": "Mike",
"LastName": "Hillyer",
"AddressID": 3,
"Email": "Mike.Hillyer@sakilastaff.com",
"StoreID": 1,
"Active": true,
"Username": "Mike",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": "iVBORw0KWgo=",
"Store": {
"StoreID": 0,
"ManagerStaffID": 0,
"AddressID": 0,
"LastUpdate": "0001-01-01T00:00:00Z",
"Staffs": null
}
}
]
},
{
"StoreID": 2,
"ManagerStaffID": 2,
"AddressID": 2,
"LastUpdate": "2006-02-15T09:57:12Z",
"Staffs": [
{
"StaffID": 2,
"FirstName": "Jon",
"LastName": "Stephens",
"AddressID": 4,
"Email": "Jon.Stephens@sakilastaff.com",
"StoreID": 2,
"Active": true,
"Username": "Jon",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": null,
"Store": {
"StoreID": 0,
"ManagerStaffID": 0,
"AddressID": 0,
"LastUpdate": "0001-01-01T00:00:00Z",
"Staffs": null
}
}
]
}
]
`)
})
t.Run("staff->store", func(t *testing.T) {
var staffs []StaffWrap
err := stmt.Query(db, &staffs)
require.NoError(t, err)
testutils.AssertJSON(t, staffs, `
[
{
"StaffID": 1,
"FirstName": "Mike",
"LastName": "Hillyer",
"AddressID": 3,
"Email": "Mike.Hillyer@sakilastaff.com",
"StoreID": 1,
"Active": true,
"Username": "Mike",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": "iVBORw0KWgo=",
"Store": {
"StoreID": 1,
"ManagerStaffID": 1,
"AddressID": 1,
"LastUpdate": "2006-02-15T09:57:12Z",
"Staffs": null
}
},
{
"StaffID": 2,
"FirstName": "Jon",
"LastName": "Stephens",
"AddressID": 4,
"Email": "Jon.Stephens@sakilastaff.com",
"StoreID": 2,
"Active": true,
"Username": "Jon",
"Password": "8cb2237d0679ca88db6464eac60da96345513964",
"LastUpdate": "2006-05-16T16:13:11.79328Z",
"Picture": null,
"Store": {
"StoreID": 2,
"ManagerStaffID": 2,
"AddressID": 2,
"LastUpdate": "2006-02-15T09:57:12Z",
"Staffs": null
}
}
]
`)
})
}
// In parameterized statements integer literals, like Int(num), are replaced with a placeholders. For some expressions,
// postgres interpreter will not have enough information to deduce the type. If this is the case postgres returns an error.
// Int8, Int16, .... functions will add automatic type cast over placeholder, so type deduction is always possible.
func TestLiteralTypeDeduction(t *testing.T) {
stmt := SELECT(
SUM(
CASE().WHEN(Staff.Active.IS_TRUE()).
THEN(Int8(6)). // if Int8 and Int32 are replaced with Int,
ELSE(Int32(-1)), // execution of this statement will return an error
).AS("num_passed"),
).FROM(Staff)
testutils.AssertStatementSql(t, stmt, `
SELECT SUM((CASE WHEN staff.active IS TRUE THEN $1::smallint ELSE $2::integer END)) AS "num_passed"
FROM dvds.staff;
`)
err := stmt.Query(db, &struct{}{})
require.NoError(t, err)
}
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