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【clause】的更多相关文章

MySQL中You can't specify target table for update in FROM clause一场

mysql中You can't specify target table <tbl> for update in FROM clause错误的意思是说,不能先select出同一表中的某些值,再update这个表(在同一语句中). 如下l: 需要将select出的结果再通过中间表select一遍,就可以规避了错误. 如下: PS:这个问题只出现于mysql,sql service 和 oracle 不会出现此问题.…

mysql-You can’t specify target table for update in FROM clause错误

mysql中You can't specify target table for update in FROM clause错误的意思是说,不能先select出同一表中的某些值,再update这个表(在同一语句中) 例如 delete from table名称 where idStr in ( ) ); 就会报上面的错误改 delete from table名称 where idStr in ( ) c from table名称 h group by h.otherKey ) s ); 通过中…

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'dd' in 'where clause'

今天在使用mysql数据库查找数据的时候报错,错误信息如下: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'dd' in 'where clause' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newI…

mysql中更新或者删除语句中子语句不能操作同一个表You can't specify target table 'test' for update in FROM clause

问题描述:有个数据表test,有个字段value,如下 mysql> select * from test;+----+------------------------------------+| id | value |+----+------------------------------------+| 3 | 3aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || 4 | 4aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa || 5 | 5aaaaaaa…

解决错误 Cannot await in the body of a catch clause

解决错误 Cannot await in the body of a catch clause static async Task f() { ExceptionDispatchInfo capturedException = null; try { await TaskThatFails(); } catch (MyException ex) { capturedException = ExceptionDispatchInfo.Capture(ex); } if (capture…

Unknown column 'a.root_id' in 'where clause'解决方法

最近遇到一个问题, update sy_user as a inner join sy_user_charge_log as b on b.username=a.username set reconciliation =0 where root_id = 26 and time between '2016-12-05 14:59:05' and '2016-12-23 18:36:57'; sql运行无问题,可是在thinkphp里面的时候,就报错了1054:Unknown column '…

Mysql运行SQL文件错误Incorrect table definition;there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause

问题描述想从服务器上DOWN下数据库.操作:先把数据库转存为SQL文件,然后在本地利用navicate运行SQL文件,出现错误信息: Incorrect table definition;there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT or ON UPDATE clause 解决思路参考: http://www.cnblogs.com/joeylee/p/3877578.html 原因:TIME…