SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function positionUTF8 (children 1)
       ExpressionList (children 2)
        Function materialize (alias h) (children 1)
         ExpressionList (children 1)
          Literal \'абв\'
        Function lowerUTF8 (children 1)
         ExpressionList (children 1)
          Literal \'аБв\' (alias n)
      Function positionCaseInsensitiveUTF8 (children 1)
       ExpressionList (children 2)
        Identifier h
        Identifier n
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10