SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 2) Function arrayElement (children 1) ExpressionList (children 2) Identifier m1 Function CAST (children 1) ExpressionList (children 2) Literal \'aaa\' Literal \'FixedString(3)\' Function arrayElement (children 1) ExpressionList (children 2) Identifier m2 Function CAST (children 1) ExpressionList (children 2) Literal \'aaa\' Literal \'FixedString(3)\' TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier t_map_02014