SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function multiIf (children 1)
     ExpressionList (children 5)
      Literal UInt64_1
      Function array (children 1)
       ExpressionList (children 2)
        Identifier col2
        Identifier col3
      Literal UInt64_1
      Function array (children 1)
       ExpressionList (children 2)
        Literal \'foo\'
        Identifier col5
      Function array (children 1)
       ExpressionList (children 2)
        Identifier col6
        Literal \'bar\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier multi_if_check