For example, if the table has integer columnsaandb, a computed column defined asa + bmight be indexed, but computed column defined asa + DATEPART(dd, GETDATE())can't be indexed, because the value might change in
@active_start_time_of_day - the earliest time in a given day when an agent run will start. @active_end_time_of_day - the latest time in a given day when an agent run will start. @active_start_date - the first day that the agent schedule will be in effect. @active_end_date -...
这是我的数据表和数据 一个t_user表 错误的删除表中的重复数据 这是报错结果: 意思是,不能先select出同一表中的值,然后再update这个表(在同一语句中) 解决方法就是: select出的结果再通过中间表select一遍,这样就规避了错误,这样就相当于不在一张表中执行。大家请注意,这个问题只出现于mysql,mssql和oracle不...
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)。 update issue i set i.group_date = (select t.groupDate from (SELECT @cdate := i.commit_date input_date, @last_sat := date_add(date_s...
报错信息如下: [Code: 1093, SQL State: HY000] You can’t specify target table ‘bd_bankaccbas’ for update in FROM clause 译文: 不能在 FROM 子句中指定目标表 ‘bd_bankaccbas’ 进行更新。 有问题的 SQL 语句如下,它在 oracle 数据库的语法是支持的,但是 mysql 就不支持直接这么写: from 和upd...
在MySQL中,写SQL语句的时候,可能会遇到You can’t specify target table‘表名’ for update in FROM clause这样的错误,它的意思是说,不能先select出同一表中的某些值,再update这个表(在同一语句中),即不能依据某字段值做判断再来更新某字段的值。 1、数据准备 product表数据如下 MySQL 中 You can't specify...
@active_start_time_of_day - the earliest time in a given day when an agent run will start. @active_end_time_of_day - the latest time in a given day when an agent run will start. @active_start_date - the first day that the agent schedule will be in effect. @...
在执行sql: delete from emp where id in (select id from emp where cdate<'2018-02-02') 时报出以下异常: ### The error occurredwhilesetting parameters ### SQL: delete from emp where id in (select id from emp where cdate<?) ### Cause: java.sql.SQLException: You can't specify target...
SQL -- Try to use a function as a parameter value.-- This produces an error message.EXEC dbo.uspGetWhereUsedProductID 819, GETDATE(); Instead, use a variable to pass a function value to the parameter, as in the following example: ...
*/ $row = sqlsrv_fetch_array( $stmt2 ); if( $row === false ) { echo "Error in fetching data.\n"; die( print_r( sqlsrv_errors(), true)); } echo "EmployeeID: ".$row['EmployeeID']."\n"; echo "Change Date: ".date_format($row['RateChangeDate'], "Y-m-d")."\n";...