SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Function substring (children 1)
     ExpressionList (children 3)
      Identifier name
      Literal UInt64_1
      Function minus (children 1)
       ExpressionList (children 2)
        Function length (children 1)
         ExpressionList (children 1)
          Identifier name
        Literal UInt64_4
    Identifier default_compression_codec
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.parts
   Function and (children 1)
    ExpressionList (children 3)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier table
       Literal \'recompression_table\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier active
       Literal UInt64_1
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier database
       Function currentDatabase (children 1)
        ExpressionList
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier name