99 lines
1.8 KiB
Go
99 lines
1.8 KiB
Go
// Copyright 2016 The Xorm Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package builder
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import (
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"errors"
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"fmt"
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)
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func (b *Builder) selectWriteTo(w Writer) error {
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if len(b.tableName) <= 0 {
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return errors.New("no table indicated")
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}
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if _, err := fmt.Fprint(w, "SELECT "); err != nil {
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return err
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}
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if len(b.selects) > 0 {
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for i, s := range b.selects {
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if _, err := fmt.Fprint(w, s); err != nil {
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return err
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}
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if i != len(b.selects)-1 {
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if _, err := fmt.Fprint(w, ","); err != nil {
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return err
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}
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}
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}
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} else {
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if _, err := fmt.Fprint(w, "*"); err != nil {
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return err
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}
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}
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if _, err := fmt.Fprint(w, " FROM ", b.tableName); err != nil {
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return err
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}
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for _, v := range b.joins {
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if _, err := fmt.Fprintf(w, " %s JOIN %s ON ", v.joinType, v.joinTable); err != nil {
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return err
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}
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if err := v.joinCond.WriteTo(w); err != nil {
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return err
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}
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}
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if b.cond.IsValid() {
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if _, err := fmt.Fprint(w, " WHERE "); err != nil {
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return err
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}
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if err := b.cond.WriteTo(w); err != nil {
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return err
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}
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}
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if len(b.groupBy) > 0 {
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if _, err := fmt.Fprint(w, " GROUP BY ", b.groupBy); err != nil {
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return err
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}
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}
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if len(b.having) > 0 {
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if _, err := fmt.Fprint(w, " HAVING ", b.having); err != nil {
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return err
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}
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}
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if len(b.orderBy) > 0 {
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if _, err := fmt.Fprint(w, " ORDER BY ", b.orderBy); err != nil {
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return err
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}
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}
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return nil
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}
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// OrderBy orderBy SQL
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func (b *Builder) OrderBy(orderBy string) *Builder {
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b.orderBy = orderBy
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return b
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}
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// GroupBy groupby SQL
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func (b *Builder) GroupBy(groupby string) *Builder {
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b.groupBy = groupby
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return b
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}
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// Having having SQL
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func (b *Builder) Having(having string) *Builder {
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b.having = having
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return b
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}
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