CreateFunctionQuery 01856_test_function_0 (children 2) Identifier 01856_test_function_0 Function lambda (children 1) ExpressionList (children 2) Function tuple (children 1) ExpressionList (children 3) Identifier a Identifier b Identifier c Function multiply (children 1) ExpressionList (children 2) Function multiply (children 1) ExpressionList (children 2) Identifier a Identifier b Identifier c