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)
        Literal \'foo\'
        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
        Identifier col7
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier multi_if_check