fork github.com/doug-martin

exp/cte.go

@@ -0,0 +1,23 @@
+package exp
+
+type commonExpr struct {
+	recursive bool
+	name      LiteralExpression
+	subQuery  Expression
+}
+
+// Creates a new WITH common table expression for a SQLExpression, typically Datasets'. This function is used
+// internally by Dataset when a CTE is added to another Dataset
+func NewCommonTableExpression(recursive bool, name string, subQuery Expression) CommonTableExpression {
+	return commonExpr{recursive: recursive, name: NewLiteralExpression(name), subQuery: subQuery}
+}
+
+func (ce commonExpr) Expression() Expression { return ce }
+
+func (ce commonExpr) Clone() Expression {
+	return commonExpr{recursive: ce.recursive, name: ce.name, subQuery: ce.subQuery.Clone().(SQLExpression)}
+}
+
+func (ce commonExpr) IsRecursive() bool       { return ce.recursive }
+func (ce commonExpr) Name() LiteralExpression { return ce.name }
+func (ce commonExpr) SubQuery() Expression    { return ce.subQuery }