Additional MySQL WITH statement tests.

internal/jet/with_statement.go

@@ -1,7 +1,7 @@
 package jet
 
 // WITH function creates new with statement from list of common table expressions for specified dialect
-func WITH(dialect Dialect, cte ...CommonTableExpressionDefinition) func(statement SerializerStatement) Statement {
+func WITH(dialect Dialect, cte ...CommonTableExpressionDefinition) func(statement Statement) Statement {
 	newWithImpl := &withImpl{
 		ctes: cte,
 		serializerStatementInterfaceImpl: serializerStatementInterfaceImpl{
@@ -11,8 +11,12 @@ func WITH(dialect Dialect, cte ...CommonTableExpressionDefinition) func(statemen
 	}
 	newWithImpl.parent = newWithImpl
 
-	return func(primaryStatement SerializerStatement) Statement {
-		newWithImpl.primaryStatement = primaryStatement
+	return func(primaryStatement Statement) Statement {
+		serializerStatement, ok := primaryStatement.(SerializerStatement)
+		if !ok {
+			panic("jet: unsupported main WITH statement.")
+		}
+		newWithImpl.primaryStatement = serializerStatement
 		return newWithImpl
 	}
 }

internal/testutils/test_utils.go

@@ -28,7 +28,7 @@ func AssertExec(t *testing.T, stmt jet.Statement, db qrm.DB, rowsAffected ...int
 	require.NoError(t, err)
 
 	if len(rowsAffected) > 0 {
-		require.Equal(t, rows, rowsAffected[0])
+		require.Equal(t, rowsAffected[0], rows)
 	}
 }
 

mysql/with_statement.go

@@ -9,7 +9,7 @@ type CommonTableExpression struct {
 }
 
 // WITH function creates new WITH statement from list of common table expressions
-func WITH(cte ...jet.CommonTableExpressionDefinition) func(statement jet.SerializerStatement) Statement {
+func WITH(cte ...jet.CommonTableExpressionDefinition) func(statement jet.Statement) Statement {
 	return jet.WITH(Dialect, cte...)
 }
 

postgres/with_statement.go

@@ -9,7 +9,7 @@ type CommonTableExpression struct {
 }
 
 // WITH function creates new WITH statement from list of common table expressions
-func WITH(cte ...jet.CommonTableExpressionDefinition) func(statement jet.SerializerStatement) Statement {
+func WITH(cte ...jet.CommonTableExpressionDefinition) func(statement jet.Statement) Statement {
 	return jet.WITH(Dialect, cte...)
 }
 

tests/mysql/with_test.go

@@ -9,7 +9,7 @@ import (
 	"testing"
 )
 
-func TestWITH_SELECT(t *testing.T) {
+func TestWITH_And_SELECT(t *testing.T) {
 	salesRep := CTE("sales_rep")
 	salesRepStaffID := Staff.StaffID.From(salesRep)
 	salesRepFullName := StringColumn("sales_rep_full_name").From(salesRep)
@@ -56,6 +56,97 @@ SELECT customer_sales_rep.customer_name AS "customer_name",
 FROM customer_sales_rep;
 `, "''", "`", -1))
 
-	_, err := stmt.Exec(db)
+	var dest []struct {
+		CustomerName     string
+		SalesRepFullName string
+	}
+	err := stmt.Query(db, &dest)
+
+	require.Equal(t, len(dest), 599)
 	require.NoError(t, err)
 }
+
+//func TestWITH_And_INSERT(t *testing.T) {
+//	paymentsToInsert := CTE("payments_to_insert")
+//
+//	stmt := WITH(
+//		paymentsToInsert.AS(
+//			SELECT(Payment.AllColumns).
+//				FROM(Payment).
+//				WHERE(Payment.Amount.LT(Float(0.5))),
+//		),
+//	)(
+//		Payment.INSERT(Payment.AllColumns).
+//			QUERY(
+//				SELECT(paymentsToInsert.AllColumns()).
+//					FROM(paymentsToInsert),
+//			).ON_DUPLICATE_KEY_UPDATE(
+//			Payment.PaymentID.SET(Payment.PaymentID.ADD(Int(100000))),
+//		),
+//	)
+//
+//	//fmt.Println(stmt.DebugSql())
+//
+//	tx, err := db.Begin()
+//	require.NoError(t, err)
+//	defer tx.Rollback()
+//
+//	testutils.AssertExec(t, stmt, tx, 24)
+//}
+
+func TestWITH_And_UPDATE(t *testing.T) {
+	paymentsToUpdate := CTE("payments_to_update")
+	paymentsToDeleteID := Payment.PaymentID.From(paymentsToUpdate)
+
+	stmt := WITH(
+		paymentsToUpdate.AS(
+			SELECT(Payment.AllColumns).
+				FROM(Payment).
+				WHERE(Payment.Amount.LT(Float(0.5))),
+		),
+	)(
+		Payment.UPDATE().
+			SET(Payment.Amount.SET(Float(0.0))).
+			WHERE(Payment.PaymentID.IN(
+				SELECT(paymentsToDeleteID).
+					FROM(paymentsToUpdate),
+			),
+			),
+	)
+
+	//fmt.Println(stmt.DebugSql())
+
+	tx, err := db.Begin()
+	require.NoError(t, err)
+	defer tx.Rollback()
+
+	testutils.AssertExec(t, stmt, tx)
+}
+
+func TestWITH_And_DELETE(t *testing.T) {
+	paymentsToDelete := CTE("payments_to_delete")
+	paymentsToDeleteID := Payment.PaymentID.From(paymentsToDelete)
+
+	stmt := WITH(
+		paymentsToDelete.AS(
+			SELECT(Payment.AllColumns).
+				FROM(Payment).
+				WHERE(Payment.Amount.LT(Float(0.5))),
+		),
+	)(
+		Payment.DELETE().
+			WHERE(Payment.PaymentID.IN(
+				SELECT(paymentsToDeleteID).
+					FROM(paymentsToDelete),
+			),
+			),
+	)
+
+	//fmt.Println(stmt.DebugSql())
+
+	tx, err := db.Begin()
+	require.NoError(t, err)
+	defer tx.Rollback()
+
+	testutils.AssertExec(t, stmt, tx, 24)
+}