SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 1) Function multiIf (children 1) ExpressionList (children 5) Function equals (children 1) ExpressionList (children 2) Function modulo (children 1) ExpressionList (children 2) Identifier col1 Literal UInt64_2 Literal UInt64_0 Function toFixedString (children 1) ExpressionList (children 2) Literal \'foo\' Literal UInt64_16 Literal UInt64_1 Identifier col3 Identifier col4 TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier multi_if_check