Mysql TRIM()函数用于从字符串中删除特定的后缀、前缀或两者。TRIM()函数的工作原理可以通过其语法来理解 −语法TRIM([{BOTH | LEADING | TRaiLING} [str_to_remo
Mysql TRIM()函数用于从字符串中删除特定的后缀、前缀或两者。TRIM()函数的工作原理可以通过其语法来理解 −
TRIM([{BOTH | LEADING | TRaiLING} [str_to_remove] FROM] string)这里，
在这里，
mysql> Select TRIM(BOTH '0' FROM '0100');
+----------------------------+
| TRIM(BOTH '0' FROM '0100') |
+----------------------------+
| 1 |
+----------------------------+
1 row in set (0.00 sec)
mysql> Select TRIM(BOTH '**' from '**tutorialspoint.com**');
+------------------------------------------------+
| TRIM(BOTH '**' from '**tutorialspoint.com**') |
+------------------------------------------------+
| tutorialspoint.com |
+------------------------------------------------+
1 row in set (0.00 sec)
mysql> Select TRIM(Trailing '**' from '**tutorialspoint.com**');
+----------------------------------------------------+
| TRIM(Trailing '**' from '**tutorialspoint.com**') |
+----------------------------------------------------+
| **tutorialspoint.com |
+----------------------------------------------------+
1 row in set (0.00 sec)
mysql> Select TRIM(Leading '**' from '**tutorialspoint.com**');
+---------------------------------------------------+
| TRIM(Leading '**' from '**tutorialspoint.com**') |
+---------------------------------------------------+
| tutorialspoint.com** |
+---------------------------------------------------+
1 row in set (0.00 sec)--结束END--
本文标题: MySQL TRIM() 函数的用途是什么？
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