Method transformSortClause

transpiler/transform/operators.go:194–205

transformSortClause transforms the sort expressions in a list of SortBy nodes (SELECT ORDER BY, aggregate ORDER BY, window ORDER BY).

(sortClause []*pg_query.Node)

// transformSortClause transforms the sort expressions in a list of SortBy
// nodes (SELECT ORDER BY, aggregate ORDER BY, window ORDER BY).
func (t *OperatorTransform) transformSortClause(sortClause []*pg_query.Node) bool {
	changed := false
	for _, sort := range sortClause {
		if sortBy := sort.GetSortBy(); sortBy != nil && sortBy.Node != nil {
			if newNode := t.transformExpression(sortBy.Node); newNode != nil {
				sortBy.Node = newNode
				changed = true
			}
		}
	}
	return changed
}

// transformWindowDef transforms the PARTITION BY / ORDER BY expressions of a
// window definition (inline OVER (...) or a named WINDOW clause entry).