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39 lines
737 B
39 lines
737 B
package clause
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type Update struct {
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Modifier string
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Table Table
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}
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// Name update clause name
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func (update Update) Name() string {
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return "UPDATE"
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}
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// Build build update clause
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func (update Update) Build(builder Builder) {
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if update.Modifier != "" {
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builder.WriteString(update.Modifier)
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builder.WriteByte(' ')
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}
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if update.Table.Name == "" {
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builder.WriteQuoted(currentTable)
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} else {
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builder.WriteQuoted(update.Table)
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}
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}
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// MergeClause merge update clause
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func (update Update) MergeClause(clause *Clause) {
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if v, ok := clause.Expression.(Update); ok {
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if update.Modifier == "" {
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update.Modifier = v.Modifier
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}
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if update.Table.Name == "" {
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update.Table = v.Table
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}
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}
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clause.Expression = update
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}
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