Mysql powerful trim () function _ MySQL

Remove the left space function from the powerful mysql trim () function bitsCN. commysql:
LTRIM (str)
Returns the string str with leading space characters removed.

The following is a code snippet:


Mysql> select ltrim ('barbar ');
-> 'Barbar'


This function is multi-byte safe.

Remove right spaces in mysql:
RTRIM (str)
Returns the string str with trailing space characters removed.

The following is a code snippet:


Mysql> select rtrim ('barbar ');
-> 'Barbar'


This function is multi-byte safe.

The trim function can filter specified strings:
Complete format: TRIM ([{BOTH | LEADING | TRAILING} [remstr] FROM] str)
Simplified Format: TRIM ([remstr FROM] str)

Returns the string str with all remstr prefixes or suffixes removed. if none of the specifiers BOTH, LEADING, or TRAILING is given, BOTH is assumed. remstr is optional and, if not specified, spaces are removed.

The following is a code snippet:


Mysql> select trim ('bar'); // spaces before and after deletion by default
-> 'Bar'
Mysql> select trim (LEADING ', 'from', barxxx'); // delete the specified first character, such ','
-> 'Barxxx'
Mysql> select trim (BOTH ', 'from', bar,'); // deletes the specified start and end characters.
-> 'Bar'
Mysql> select trim (TRAILING ',' FROM 'barxxyz ,,');
-> 'Barxxyz'



Mysql> UPDATE table SET 'field' = TRIM (TRAILING ', 'From 'field') WHERE 'field' LIKE '% ,';


This function is multi-byte safe.

Replace the last paging character of the field in the database


UPDATE [! Db. pre!] Ecms_news_data_1 SET 'newstext '= TRIM (TRAILING 'bitscn. com