0 FETCH 语句成功。 -1 FETCH 语句失败或此行不在结果集中。 -2 被提取的行不存在。 这个我知道。 但就是不知道成功与失败的具体情形,能否举例说明下在何种情况下失败或者此行不在结果集中,或者被提取的行不存在呢? 先谢谢帮忙的人 游标的判断 你不是都写了吗?? 具体的可以看联机丛书 基本的语法看联机比...
,可能是由于以下几个原因: 1. 数据库游标未正确声明或初始化:在使用游标进行数据检索时,需要先声明游标并初始化,以便后续使用。如果未正确声明或初始化游标,那么当尝试使用@@FETCH_STATUS...
@@FETCH_STATUS (Transact-SQL) @@IDENTITY (Transact-SQL) @@IDLE (Transact-SQL) @@IO_BUSY (Transact-SQL) @@LANGID (Transact-SQL) @@LANGUAGE (Transact-SQL) @@LOCK_TIMEOUT (Transact-SQL) @@MAX_CONNECTIONS (Transact-SQL) @@MAX_PRECISION (Transact-SQL) @@NESTLEVEL (Transact-SQL) @@OPTION...
@@FETCH_STATUS 函数报告上一个 FETCH 语句的状态。相同的信息记录在由 sp_describe_cursor 返回的游标中的 fetch_status 列中。这些状态信息应该用于在对由 FETCH 语句返回的数据进行任何操作之前,以确定这些数据的有效性。有关详细信息,请参阅 @@FETCH_STATUS (Transact-SQL)。 权限 FETCH 权限默认授予任何有效...
WHILE @@FETCH_STATUS = 0 BEGIN -- Concatenate and display the current values in the variables. PRINT 'Contact Name: ' + @FirstName + ' ' + @LastName -- This is executed as long as the previous fetch succeeds. FETCH NEXT FROM contact_cursor INTO @LastName, @FirstName; END CLOSE...
-- Check @@FETCH_STATUS to see if there are any more rows to fetch.WHILE @@FETCH_STATUS = 0BEGIN-- Concatenate and display the current values in the variables.PRINT'Contact Name: '+ @FirstName +' '+ @LastName-- This is executed as long as the previous fetch succeeds.FETCHNEXTFROM...
This example uses @@FETCH_STATUS to control cursor activities in a WHILE loop. SQL Copy DECLARE Employee_Cursor CURSOR FOR SELECT BusinessEntityID, JobTitle FROM AdventureWorks2022.HumanResources.Employee; OPEN Employee_Cursor; FETCH NEXT FROM Employee_Cursor; WHILE @@FETCH_STATUS = 0 BEGIN FETCH...
This example uses @@FETCH_STATUS to control cursor activities in a WHILE loop. SQL Copy DECLARE Employee_Cursor CURSOR FOR SELECT BusinessEntityID, JobTitle FROM AdventureWorks2022.HumanResources.Employee; OPEN Employee_Cursor; FETCH NEXT FROM Employee_Cursor; WHILE @@FETCH_STATUS = 0 BEGIN FETCH...
@FirstName -- Check @@FETCH_STATUS to see if there are any more rows to fetch. WHILE @@FETCH_STATUS = 0 BEGIN -- Concatenate and display the current values in the variables. PRINT 'Contact Name: ' + @FirstName + ' ' + @LastName -- This is executed as long as the previous fetc...
@FirstName -- Check @@FETCH_STATUS to see if there are any more rows to fetch. WHILE @@FETCH_STATUS = 0 BEGIN -- Concatenate and display the current values in the variables. PRINT 'Contact Name: ' + @FirstName + ' ' + @LastName -- This is executed as long as the previous fetc...