sql中的常见报错；

1.对于某些写的sql懒得判断的；

SELECT * FROM sys_part WHERE part_no =(SELECT part_no FROM dbo.sys_part)
Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

对于错误代码：512  

   SELECT TOP 10 * from sys.messages  WHERE message_id =512  --可以查询到一些对于此错误的不同语言描述，不用翻译了；

--对于sql中执行的sql语句记录可以用如下进行查询，不过对于上面的错误内容查询不出来.......：

SELECT TOP 100
ST.text AS '执行的SQL语句',
QS.execution_count AS '执行次数',
QS.total_elapsed_time AS '耗时',
QS.total_logical_reads AS '逻辑读取次数',
QS.total_logical_writes AS '逻辑写入次数',
QS.total_physical_reads AS '物理读取次数',
QS.creation_time AS '执行时间' ,
QS.*
FROM sys.dm_exec_query_stats QS
CROSS APPLY
sys.dm_exec_sql_text(QS.sql_handle) ST
WHERE QS.creation_time BETWEEN '2019-03-01 00:00:00' AND '2019-04-02 11:00:00'
ORDER BY
qs.creation_time DESC