三.case,while,repeat,loop循环 1.case循环语法&定义存储过程完成需求 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create procedure p6(in month int) begin declare result varchar(10); case when month >=1 and month <= 3 then set result :='第一季度'; when month >=4 and month <=ó ...
参考示例:https://blog.csdn.net/xw1680/article/details/130119856 DELIMITER $$ DROP PROCEDURE IF EXISTS `sp_cursor_test3` $$ CREATE PROCEDURE `sp_cursor_tes
B. Use WHILE in a cursor The following example uses@@FETCH_STATUSto control cursor activities in aWHILEloop. SQL DECLARE@EmployeeIDASNVARCHAR(256)DECLARE@TitleASNVARCHAR(50)DECLAREEmployee_CursorCURSORFORSELECTLoginID, JobTitleFROMAdventureWorks2022.HumanResources.EmployeeWHEREJobTitle ='Marketing Speciali...
“Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered index [Execute SQL Task] Error: The value type (__ComObject) can only be converted to variables of type Object. [ODBC Driver Manager] Data source nam...
FOR employee_rec in c1 ---employee_rec直接用,不用提前定义 LOOP total_val := total_val + employee_rec.monthly_income; END LOOP; 当使用CURSOR FOR Loop时,不用我手工open cursor close cursor 应用: begin FOR emm IN ( SELECT ro_site, ns_site, product_line, wh_type ...
I have two sql servers. Old, is 2008 and win server 2008 We created new machine on same vmware host, without any cpu limiations. Is a sql server 2019 windows server 2019. A simple loop like this presents up to 1 second difference, beign new system (with no laod) more slow: ...
The DoWork event could run the loop. In the loop use System.Threading.Thread.Sleep(3) for 3 milliseconds to sleep the thread. Use a global boolean that a button click event can set to true or false. Have the loop check if the global boolean is set to whatever value makes the loop ...
While not entering loop Hi community, i want to shutdown a windows server to take a vmware snapshot. So I have to check if the vm is powered down on esx. # connect-VIServer -Server vm-vcenter001.contoso.com$computer="vm-sql"Stop-Computer$computer-Force-Confirm:$false$vm=Get-VM$...
In the meantime, if you absolutely must use a loop, you must also be willing to accept the performance consequences. One way to offset those - in cases where you really are using a cursor as a read-only, single pass through a set - is to use the following keywords when declaring your...
If the maximum price is less than or equal to $500, the WHILE loop restarts and doubles the prices again. This loop continues doubling the prices until the maximum price is greater than $500, and then exits the WHILE loop and prints a message. Copy USE AdventureWorks2008R2; GO WHILE (...