Sql server 如何在while循环中手动断开光标。在sql server中
如果while循环也有一个中断,如果while循环命中中断命令i t从循环中出来,如果光标命中中断命令,它是如何从while循环中完全出来的您可以在Sql server 如何在while循环中手动断开光标。在sql server中,sql-server,while-loop,cursor,Sql Server,While Loop,Cursor,如果while循环也有一个中断,如果while循环命中中断命令i t从循环中出来,如果光标命中中断命令,它是如何从while循环中完全出来的您可以在while循环中给出一些在光标上迭代的条件。第一个条件是启用@@FETCH\u STATUS,另一个条件是要在其上断开循环 if while loop also having a break, if while loop hit break command i t comes out of the loop and if cursor
while
循环中给出一些在光标上迭代的条件。第一个条件是启用@@FETCH\u STATUS
,另一个条件是要在其上断开循环
if while loop also having a break, if while loop hit break command i t comes out of the loop and if cursor hit break command , how it come entire out of the while loop
for example:
DECLARE @CursorTest TABLE
(
idcol INT ,
fld1 INT,
fld2 INT,
fld3 CHAR(800)
)
INSERT INTO @CursorTest (fld1, fld2, fld3)
SELECT 1, RAND() * 100 * DATEPART(ms, GETDATE()), LEFT(REPLICATE(CAST(NEWID() AS VARCHAR(36)),30),800)
DECLARE @Variable1 INT, @Variable2 INT
DECLARE CursorName CURSOR FAST_FORWARD
FOR
SELECT idcol FROM @CursorTest
OPEN CursorName
FETCH NEXT FROM CursorName INTO @Variable1
WHILE @@FETCH_STATUS = 0
BEGIN
if (@Variable1 =10)
BEGIN
BREAK
END
PRINT CAST(@Variable1 AS VARCHAR(5))
FETCH NEXT FROM CursorName INTO @Variable1
END
CLOSE CursorName
DEALLOCATE CursorName
if cursor hit break command , how it come entire out of the while loop
使用BREAK语句
WHILE @@FETCH_STATUS = 0 OR @stopLoop = false
BEGIN
FETCH NEXT FROM Employee_Cursor;
//your code
if condition
BEGIN
@stopLoop = true
END
END;
CLOSE Employee_Cursor;
当@FETCH\u STATUS=0和@stopLoop=false而不是OR时,不会是吗?
WHILE @@FETCH_STATUS = 0
BEGIN
FETCH NEXT FROM Employee_Cursor;
//your code
if condition
BEGIN
BREAK
END
END;
CLOSE Employee_Cursor;