这个查询应该是从SQL数据库中删除临时表/视图,但是当删除最后一个表/视图时,它会保持循环。任何人都有答案,为什么当删除最后一个表时,这将会陷入无限循环?虽然循环问题
DECLARE @name VARCHAR(128)
DECLARE @SQL VARCHAR(254)
DECLARE @type VARCHAR(50)
DECLARE @tmp_table TABLE
(
table_name VARCHAR(50)
, table_type VARCHAR(50)
)
;WITH cte_tempTables
AS (
SELECT
table_name
, crdate
, crdate + 90 [ExperiationDate]
, TABLE_TYPE
FROM
INFORMATION_SCHEMA.TABLES t
inner join sysobjects s
on s.name = t.table_name
WHERE
TABLE_CATALOG = 'SBR_Temp'
AND t.table_name NOT IN ('DaleDelq' ,'tblCancelContract' ,
'tblCreateContracts' ,'MWFRTPay')
)
INSERT INTO
@tmp_table
(
table_name
, table_type
)
select
table_name
, table_type
FROM
[cte_tempTables]
WHERE
ExperiationDate < GETDATE()
SELECT TOP 1
@name = [table_name]
, @type = CASE WHEN [table_type] = 'BASE TABLE' THEN 'TABLE'
ELSE 'VIEW'
END
FROM
@tmp_table
WHILE @name IS NOT NULL
OR @name <> ''
BEGIN
SELECT
@SQL = 'DROP ' + @type + ' SBR_Temp.[dbo].[' + RTRIM(@name) + ']'
--EXEC (@SQL)
PRINT 'Dropped ' + @type + ':' + @name
DELETE
@tmp_table
WHERE
[table_name] = @name
SELECT TOP 1
@name = [table_name]
, @type = CASE WHEN [table_type] = 'BASE TABLE' THEN 'TABLE'
ELSE 'VIEW'
END
FROM
@tmp_table
SELECT @name
END
GO
这里是结果
(4行(一个或多个)受影响) 掉落视图的一个实例:(受影响)1行(多个)vue_SunsetCoveClientInventory
(1行(s)affected) 已删除VIEW:vue_SunsetCoveClientCoOwners
(1 row(s)affected)
(1行(一个或多个)受影响) 掉落表:(受影响1行(S))BKDischarge
(受影响1行(S))
掉落VIEW:vue_nocoop
( 1行(一个或多个)受影响)
(1行(一个或多个)受影响) 掉落VIEW:vue_nocoop
(0行(或多个)受影响)
(1行(一个或多个)受影响) 掉落VIEW:(受影响1行(S))vue_nocoop
(影响0行(S))
掉落VIEW:vue_nocoop
(0行(或多个)受影响)
(1行(一个或多个)受影响) 掉落VIEW:vue_nocoop
(0行(多个)AFF影响vue_nocoop
(0行(S))
也许'@ name'是保持其原来的值,而不是设置为'NULL'或'“”'时,所有的临时表都不见了? – JAB 2012-08-01 18:27:09