如何在表中的所有列上執行REGEXP？

Question

如何在所有列上執行REGEXP？

這是我的表：

mysql> select * from datatables_demo; 
+----+------------+-----------+-------------+--------+------------+--------+ 
| id | first_name | last_name | position | office | start_date | salary | 
+----+------------+-----------+-------------+--------+------------+--------+ 
| 1 | Tiger  | Nixon  | Accountant | Tokyo | 2016-11-08 | 320800 | 
| 2 | Garrett | Winters | Accountant2 | Tokyo | 2016-11-08 | 170750 | 
| 3 | Ashton  | Cox  | Accountant3 | Tokyo | 2016-11-08 | 86000 | 
| 4 | Cedric  | Kelly  | Accountant4 | Tokyo | 2016-11-08 | 433060 | 
+----+------------+-----------+-------------+--------+------------+--------+ 
4 rows in set (0.01 sec) 

這是我的選擇所有列，並做了REGEXP 1列first_name：

mysql> select * from datatables_demo WHERE first_name REGEXP 'T'; 
+----+------------+-----------+-------------+--------+------------+--------+ 
| id | first_name | last_name | position | office | start_date | salary | 
+----+------------+-----------+-------------+--------+------------+--------+ 
| 1 | Tiger  | Nixon  | Accountant | Tokyo | 2016-11-08 | 320800 | 
| 2 | Garrett | Winters | Accountant2 | Tokyo | 2016-11-08 | 170750 | 
| 3 | Ashton  | Cox  | Accountant3 | Tokyo | 2016-11-08 | 86000 | 
+----+------------+-----------+-------------+--------+------------+--------+ 
3 rows in set (0.00 sec) 

我怎麼做一個RegExp上的所有列？這是我的嘗試，但它不正確。

mysql> select * from datatables_demo WHERE * REGEXP 'T'; 
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '* REGEXP 'T'' at line 1 
mysql> 

無法從docs

工作了我一定要寫出每列一個RegExp：
select * from datatables_demo WHERE column1 REGEXP 'T' OR column2 REGEXP 'T' OR columnN REGEXP 'T';

Answer 1

你可以把它寫每列或使用前的正則表達式CONCAT它。請回頭看看這一個：

SELECT * FROM datatables_demo where CONCAT(first_name, last_name, position, office) REGEXP 'T';