SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function caseWithExpression (children 1)
     ExpressionList (children 6)
      Identifier col1
      Literal UInt64_1
      Literal \'A\'
      Literal UInt64_2
      Literal \'AB\'
      Literal \'ABC\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier multi_if_check