循环使用WHILE 比如 DECLARE @I INT SET @I=0 WHILE @I<10 BEGIN PRINT @I SET @I=@I+1 END 跳出循环有主要有2种 BREAK和RETURN 比如 DECLARE @I INT SET @I=0 WHILE @I<10 BEGIN PRINT @I BREAK END 这样就跳出循环了，也可以换成RETURN，RETURN会结束整个批查询的执行，BREAK仅仅跳出...
Login failed for user '<user name>'. Reason: Failed to open the database '<dbname>' specified in the login properties [CLIENT: <ip address>] 有关详细信息,请参阅MSSQLSERVER_4064。 在 连接字符串 或 SSMS 中显式指定的数据...
您嘗試將NT LAN Manager (NTLM) 認證從一個服務傳遞至同一部電腦上的另一個服務(例如:從 IIS 到 SQL Server),但程式中發生失敗。新增 DisableLoopbackCheck 或 BackConnectionHostNames登錄專案。 在多部計算機上都有雙躍點(條件約束委派)案例。 如果 Kerberos 連線因為服務主體名稱 (SPN) 問題而失敗,就會發生...
Forcount IN [Reverse] bound1…bound2 Loop 语句序列 End Loop Count:循环的下界bound1,检查它是否小于上界bound2,当指定Reverse时,count为循环的上界,检查它是否大于下界bound1,如果越界,则执行跳出循环,然后按照步长更新,count,重新判断条件。
Print @DSQL END the @tempStartDate variable is not parsing correctly in the 2nd loop which is not allowing to increment the date by 10 minutes. Please let me know whats going wrong or did i miss any step. Any help would be very much appreciated. ...
tips = ['Python', 'SQL', 'PowerBi'] for tip in tips: print(tip) The for loop is often used to access the indices of the member variable from the list of variables that defines the bounds of the loop: for index in range(len(tips)): ...
Hello, an error occurred yesterday when the plugin was trying to unsuccefully send more than the maximum supported characters in a MS SQL column with 'varchar(MAX)'. In this case you can be stuck in an infinite retry loop with "String or binary data would be truncated", and the logstas...
首先执行计划让你知道你复杂的sql到底是怎么执行的,有没有按照你想的方案执行,有没有按照最高效的方式执行,使用啦众多索引的哪一个,怎么排序,怎么合并数据的,有没有造成不必要资源浪费等等。官方数据显示,执行t-sql存在问题,80%都可以在执行计划中找到答案。
【重学 MySQL】三十三、流程控制函数 在MySQL中,流程控制函数是用于在SQL查询、存储过程或函数中根据特定条件执行不同流程的重要工具。...语法: IF(expr1, expr2, expr3) 如果expr1为真(TRUE),则返回expr2。如果expr1为假(FALSE),则返回expr3。...
PropertyValue Description Sequence number of the import that created this record. DisplayName Import Sequence Number IsValidForForm False IsValidForRead True LogicalName importsequencenumber RequiredLevel None Type Integer MaxValue 2147483647 MinValue -2147483648ms...