# Showing Sql Mode

__*SQL_MODE*__

+ Shows the current SQL mode:
  + `select @@global.sql_mode;` 
  + `select @@session.sql_mode;` 
  + `select @@sql_mode;` 
+ Default SQL mode:
```8
mysql> select substring_index(@@sql_mode,',',4);
+---------------------------------------------------------------------+
| substring_index(@@sql_mode,',',4)                                   |
+---------------------------------------------------------------------+
| ONLY_FULL_GROUP_BY,~!@STRICT_TRANS_TABLES@!~,NO_ZERO_IN_DATE,NO_ZERO_DATE |
+---------------------------------------------------------------------+
1 row in set (0.01 sec)

mysql> select substring_index(@@sql_mode,',',-4);
+------------------------------------------------------------------------------------+
| substring_index(@@sql_mode,',',-4)                                                 |
+------------------------------------------------------------------------------------+
| NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION |
+------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
```

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The presence of STRICT_TRANS_TABLES means that TiDB is in strict mode by default.

We will talk about strict mode later.