/**
* Creates a relational expression which projects an array of expressions.
*
* @param child input relational expression
* @param projectList list of (expression, name) pairs
* @param optimize Whether to optimize
*/
public static RelNode createProject(
RelNode child, List<Pair<RexNode, String>> projectList, boolean optimize) {
return createProject(child, Pair.left(projectList), Pair.right(projectList), optimize);
}
