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MySQL: Add Where and Limit for Delete statement.

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This commit is contained in:
go-jet 2019-08-11 18:23:02 +02:00
parent a3ae52c43c
commit 0dd976601e
6 changed files with 91 additions and 29 deletions
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25
mysql/delete_statement.go
View file

@ -5,29 +5,44 @@ import "github.com/go-jet/jet/internal/jet"
type DeleteStatement interface {
jet.Statement
WHERE(expression BoolExpression) Statement
WHERE(expression BoolExpression) DeleteStatement
ORDER_BY(orderByClauses ...jet.OrderByClause) DeleteStatement
LIMIT(limit int64) DeleteStatement
}
type deleteStatementImpl struct {
jet.StatementImpl
Delete jet.ClauseStatementBegin
Where jet.ClauseWhere
Delete jet.ClauseStatementBegin
Where jet.ClauseWhere
OrderBy jet.ClauseOrderBy
Limit jet.ClauseLimit
}
func newDeleteStatement(table Table) DeleteStatement {
newDelete := &deleteStatementImpl{}
newDelete.StatementImpl = jet.NewStatementImpl(Dialect, jet.DeleteStatementType, newDelete, &newDelete.Delete,
&newDelete.Where)
&newDelete.Where, &newDelete.OrderBy, &newDelete.Limit)
newDelete.Delete.Name = "DELETE FROM"
newDelete.Delete.Tables = append(newDelete.Delete.Tables, table)
newDelete.Where.Mandatory = true
newDelete.Limit.Count = -1
return newDelete
}
func (d *deleteStatementImpl) WHERE(expression BoolExpression) Statement {
func (d *deleteStatementImpl) WHERE(expression BoolExpression) DeleteStatement {
d.Where.Condition = expression
return d
}
func (s *deleteStatementImpl) ORDER_BY(orderByClauses ...jet.OrderByClause) DeleteStatement {
s.OrderBy.List = orderByClauses
return s
}
func (s *deleteStatementImpl) LIMIT(limit int64) DeleteStatement {
s.Limit.Count = limit
return s
}

9
mysql/delete_statement_test.go
View file

@ -15,3 +15,12 @@ DELETE FROM db.table1
WHERE table1.col1 = ?;
`, int64(1))
}
func TestDeleteWithWhereOrderByLimit(t *testing.T) {
assertStatement(t, table1.DELETE().WHERE(table1Col1.EQ(Int(1))).ORDER_BY(table1Col1).LIMIT(1), `
DELETE FROM db.table1
WHERE table1.col1 = ?
ORDER BY table1.col1
LIMIT ?;
`, int64(1), int64(1))
}

25
mysql/table.go
View file

@ -17,19 +17,24 @@ type readableTable interface {
SELECT(projection jet.Projection, projections ...jet.Projection) SelectStatement
// Creates a inner join tableName Expression using onCondition.
INNER_JOIN(table ReadableTable, onCondition BoolExpression) Table
INNER_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable
// Creates a left join tableName Expression using onCondition.
LEFT_JOIN(table ReadableTable, onCondition BoolExpression) Table
LEFT_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable
// Creates a right join tableName Expression using onCondition.
RIGHT_JOIN(table ReadableTable, onCondition BoolExpression) Table
RIGHT_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable
// Creates a full join tableName Expression using onCondition.
FULL_JOIN(table ReadableTable, onCondition BoolExpression) Table
FULL_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable
// Creates a cross join tableName Expression using onCondition.
CROSS_JOIN(table ReadableTable) Table
CROSS_JOIN(table ReadableTable) joinSelectUpdateTable
}
type joinSelectUpdateTable interface {
ReadableTable
UPDATE(column jet.Column, columns ...jet.Column) UpdateStatement
}
type ReadableTable interface {
@ -47,25 +52,25 @@ func (r *readableTableInterfaceImpl) SELECT(projection1 jet.Projection, projecti
}
// Creates a inner join tableName Expression using onCondition.
func (r *readableTableInterfaceImpl) INNER_JOIN(table ReadableTable, onCondition BoolExpression) Table {
func (r *readableTableInterfaceImpl) INNER_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable {
return newJoinTable(r.parent, table, jet.InnerJoin, onCondition)
}
// Creates a left join tableName Expression using onCondition.
func (r *readableTableInterfaceImpl) LEFT_JOIN(table ReadableTable, onCondition BoolExpression) Table {
func (r *readableTableInterfaceImpl) LEFT_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable {
return newJoinTable(r.parent, table, jet.LeftJoin, onCondition)
}
// Creates a right join tableName Expression using onCondition.
func (r *readableTableInterfaceImpl) RIGHT_JOIN(table ReadableTable, onCondition BoolExpression) Table {
func (r *readableTableInterfaceImpl) RIGHT_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable {
return newJoinTable(r.parent, table, jet.RightJoin, onCondition)
}
func (r *readableTableInterfaceImpl) FULL_JOIN(table ReadableTable, onCondition BoolExpression) Table {
func (r *readableTableInterfaceImpl) FULL_JOIN(table ReadableTable, onCondition BoolExpression) joinSelectUpdateTable {
return newJoinTable(r.parent, table, jet.FullJoin, onCondition)
}
func (r *readableTableInterfaceImpl) CROSS_JOIN(table ReadableTable) Table {
func (r *readableTableInterfaceImpl) CROSS_JOIN(table ReadableTable) joinSelectUpdateTable {
return newJoinTable(r.parent, table, jet.CrossJoin, nil)
}