MySQL中的CONCAT函数使用教程
使用MySQLCONCAT()函数将两个字符串连接起来，形成一个单一的字符串。试试下面的例子：
mysql>SELECTCONCAT('FIRST','SECOND');
+----------------------------+
|CONCAT('FIRST','SECOND')|
+----------------------------+
|FIRSTSECOND|
+----------------------------+
1rowinset(0.00sec)
了解CONCAT函数更详细，考虑EMPLOYEE_TBL表具有以下记录：
mysql>SELECT*FROMemployee_tbl; +------+------+------------+--------------------+ |id|name|work_date|daily_typing_pages| +------+------+------------+--------------------+ |1|John|2007-01-24|250| |2|Ram|2007-05-27|220| |3|Jack|2007-05-06|170| |3|Jack|2007-04-06|100| |4|Jill|2007-04-06|220| |5|Zara|2007-06-06|300| |5|Zara|2007-02-06|350| +------+------+------------+--------------------+ 7rowsinset(0.00sec)
可以用以下命令连结上表中的name和ID：
mysql>SELECTCONCAT(id,name,work_date) ->FROMemployee_tbl; +-----------------------------+ |CONCAT(id,name,work_date)| +-----------------------------+ |1John2007-01-24| |2Ram2007-05-27| |3Jack2007-05-06| |3Jack2007-04-06| |4Jill2007-04-06| |5Zara2007-06-06| |5Zara2007-02-06| +-----------------------------+ 7rowsinset(0.00sec)