strongduanmu commented on issue #26028:
URL: 
https://github.com/apache/shardingsphere/issues/26028#issuecomment-1574742325

   When subquery contains encrypt column, and not config subquery alias, it 
will throw exception.
   
   ```
   [INFO ] 2023-06-03 15:18:19.429 [Connection-1-ThreadExecutor] 
ShardingSphere-SQL - Logic SQL: SELECT * FROM (SELECT id, user_id, order_id, 
(SELECT user_name FROM t_user LIMIT 1) FROM t_encrypt) temp
   [INFO ] 2023-06-03 15:18:19.430 [Connection-1-ThreadExecutor] 
ShardingSphere-SQL - Actual SQL: ds_0 ::: SELECT temp.`id`, temp.`user_cipher` 
AS `user_id`, temp.`order_cipher` AS `order_id`, (SELECT user_name FROM t_user 
LIMIT 1) AS `(SELECT user_name FROM t_user LIMIT 1)` FROM (SELECT id, 
user_cipher, user_plain, order_cipher, (SELECT user_name_cipher AS user_name 
FROM t_user LIMIT 1) FROM t_encrypt) temp
   ```


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