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error code [1260]; %d line(s) were cut by GROUP_CONCAT();_MySQL

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Release: 2016-06-01 13:08:54
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GROUP_CONCAT有个最大长度的限制,超过最大长度就会被截断掉,你可以通过下面的语句获得: 

mysql> SELECT @@global.group_concat_max_len; 
+-------------------------------+ 
| @@global.group_concat_max_len | 
+-------------------------------+ 
|                      1024     | 
+-------------------------------+ 
1024这就是一般MySQL系统默认的最大长度,如果你的bid串起来大于这个就会出问题 
解决办法 

1.在MySQL配置文件中加上 

group_concat_max_len = 102400 #你要的最大长度 

2.执行语句: 

mysql> SET GLOBAL group_concat_max_len=102400; 

再执行group_concat语句就不会出问题了

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