59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package jet
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// SelectTable is interface for SELECT sub-queries
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type SelectTable interface {
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Serializer
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Alias() string
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AllColumns() ProjectionList
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}
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type selectTableImpl struct {
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selectStmt SerializerStatement
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alias string
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}
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// NewSelectTable func
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func NewSelectTable(selectStmt SerializerStatement, alias string) selectTableImpl {
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selectTable := selectTableImpl{selectStmt: selectStmt, alias: alias}
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return selectTable
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}
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func (s selectTableImpl) Alias() string {
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return s.alias
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}
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func (s selectTableImpl) AllColumns() ProjectionList {
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statementWithProjections, ok := s.selectStmt.(HasProjections)
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if !ok {
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return ProjectionList{}
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}
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projectionList := statementWithProjections.projections().fromImpl(s)
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return projectionList.(ProjectionList)
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}
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func (s selectTableImpl) serialize(statement StatementType, out *SQLBuilder, options ...SerializeOption) {
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s.selectStmt.serialize(statement, out)
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out.WriteString("AS")
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out.WriteIdentifier(s.alias)
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}
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// --------------------------------------
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type lateralImpl struct {
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selectTableImpl
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}
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// NewLateral creates new lateral expression from select statement with alias
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func NewLateral(selectStmt SerializerStatement, alias string) SelectTable {
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return lateralImpl{selectTableImpl: NewSelectTable(selectStmt, alias)}
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}
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func (s lateralImpl) serialize(statement StatementType, out *SQLBuilder, options ...SerializeOption) {
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out.WriteString("LATERAL")
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s.selectStmt.serialize(statement, out)
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out.WriteString("AS")
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out.WriteIdentifier(s.alias)
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}
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