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gdb_model_join.go
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gdb_model_join.go
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// Copyright 2017 gf Author(https://github.com/csrgxtu/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/csrgxtu/gf.
package gdb
import "fmt"
// LeftJoin does "LEFT JOIN ... ON ..." statement on the model.
// The parameter <table> can be joined table and its joined condition,
// and also with its alias name, like:
// Table("user").LeftJoin("user_detail", "user_detail.uid=user.uid")
// Table("user", "u").LeftJoin("user_detail", "ud", "ud.uid=u.uid")
func (m *Model) LeftJoin(table ...string) *Model {
model := m.getModel()
if len(table) > 2 {
model.tables += fmt.Sprintf(
" LEFT JOIN %s AS %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), m.db.QuoteWord(table[1]), table[2],
)
} else if len(table) == 2 {
model.tables += fmt.Sprintf(
" LEFT JOIN %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), table[1],
)
} else {
panic("invalid join table parameter")
}
return model
}
// RightJoin does "RIGHT JOIN ... ON ..." statement on the model.
// The parameter <table> can be joined table and its joined condition,
// and also with its alias name, like:
// Table("user").RightJoin("user_detail", "user_detail.uid=user.uid")
// Table("user", "u").RightJoin("user_detail", "ud", "ud.uid=u.uid")
func (m *Model) RightJoin(table ...string) *Model {
model := m.getModel()
if len(table) > 2 {
model.tables += fmt.Sprintf(
" RIGHT JOIN %s AS %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), m.db.QuoteWord(table[1]), table[2],
)
} else if len(table) == 2 {
model.tables += fmt.Sprintf(
" RIGHT JOIN %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), table[1],
)
} else {
panic("invalid join table parameter")
}
return model
}
// InnerJoin does "INNER JOIN ... ON ..." statement on the model.
// The parameter <table> can be joined table and its joined condition,
// and also with its alias name, like:
// Table("user").InnerJoin("user_detail", "user_detail.uid=user.uid")
// Table("user", "u").InnerJoin("user_detail", "ud", "ud.uid=u.uid")
func (m *Model) InnerJoin(table ...string) *Model {
model := m.getModel()
if len(table) > 2 {
model.tables += fmt.Sprintf(
" INNER JOIN %s AS %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), m.db.QuoteWord(table[1]), table[2],
)
} else if len(table) == 2 {
model.tables += fmt.Sprintf(
" INNER JOIN %s ON (%s)",
m.db.QuotePrefixTableName(table[0]), table[1],
)
} else {
panic("invalid join table parameter")
}
return model
}