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40 lines
917 B
Go
40 lines
917 B
Go
package ast
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import "github.com/sqlc-dev/sqlc/internal/sql/format"
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// OnDuplicateKeyUpdate represents MySQL's ON DUPLICATE KEY UPDATE clause
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type OnDuplicateKeyUpdate struct {
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Tag NodeTag[OnDuplicateKeyUpdate] `json:"tag"`
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// TargetList contains the assignments (column = value pairs)
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TargetList *List `json:"target_list,omitempty"`
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Location int `json:"location"`
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}
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func (n *OnDuplicateKeyUpdate) Pos() int {
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return n.Location
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}
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func (n *OnDuplicateKeyUpdate) Format(buf *TrackedBuffer, d format.Dialect) {
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if n == nil {
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return
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}
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buf.WriteString("ON DUPLICATE KEY UPDATE ")
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if n.TargetList != nil {
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for i, item := range n.TargetList.Items {
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if i > 0 {
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buf.WriteString(", ")
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}
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if rt, ok := item.(*ResTarget); ok {
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if rt.Name != nil {
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buf.WriteString(*rt.Name)
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}
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buf.WriteString(" = ")
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buf.astFormat(rt.Val, d)
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} else {
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buf.astFormat(item, d)
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}
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}
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}
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}
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