Question

如果表存在，则期望删除并重新创建。实际不是丢弃表，而是再次将数据插入到表中。

BEGIN
PRINT N'Seeding [Proj].[UserTable]...';
SET NOCOUNT ON
--
-- BEGIN SEED DATA SECTION
--
IF OBJECT_ID('#tempdb..#SeedData') IS NOT NULL DROP TABLE #SeedData
    SET NOCOUNT ON
    CREATE TABLE #SeedData (
    [UserName] nvarchar(50) NULL,   
    [CreatedById] [bigint] NULL,
    [CreatedDate] [datetimeoffset](7) NULL  
    )
INSERT INTO #SeedData SELECT N'UserA',-1,getdate()
...
--
-- END SEED DATA SECTION
--
SET NOCOUNT OFF
INSERT INTO [Proj].[UserTable] (
[UserName],
[CreatedById], 
[CreatedDate]
 )
SELECT seed.[UserName]
,seed.[CreatedById] 
,seed.[CreatedDate]        
  FROM #SeedData seed
    DROP TABLE #SeedData

    SET NOCOUNT OFF
END
GO

尝试的代码：

 - IF OBJECT_ID('#SeedData', 'U') IS NOT NULL  DROP TABLE #SeedData
 - IF OBJECT_ID('tempdb..#SeedData', 'U') IS NOT NULL DROP TABLE #SeedData

Answer 1

使用

IF OBJECT_ID('tempdb..#SeedData') is not null
drop table #seeddata

即使传递了table参数，我也无法重现这个问题。

测试：

create table #test
(
id int 
)

select * from tempdb.sys.objects--you can see table 

if object_id('tempdb..#test','u') is not null
drop table #test

select * from tempdb.sys.objects--you can't see table

Answer 2

删除＆＃39; #temp db ..＆＃39;

前面的哈希值

BEGIN
PRINT N'Seeding [Proj].[UserTable]...';
SET NOCOUNT ON
--
-- BEGIN SEED DATA SECTION
--
IF OBJECT_ID('tempdb..#SeedData') IS NOT NULL DROP TABLE #SeedData
    SET NOCOUNT ON
    CREATE TABLE #SeedData (
    [UserName] nvarchar(50) NULL,   
    [CreatedById] [bigint] NULL,
    [CreatedDate] [datetimeoffset](7) NULL  
    )
INSERT INTO #SeedData SELECT N'UserA',-1,getdate()
...
--
-- END SEED DATA SECTION
--
SET NOCOUNT OFF
INSERT INTO [Proj].[UserTable] (
[UserName],
[CreatedById], 
[CreatedDate]
 )
SELECT seed.[UserName]
,seed.[CreatedById] 
,seed.[CreatedDate]        
  FROM #SeedData seed
    DROP TABLE #SeedData

    SET NOCOUNT OFF
END
GO

Answer 3

请尝试使用drop table语句，将[Database].[Schema].[TableName]替换为您尝试删除的对象。

IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[Database].[Schema].[TableName]') AND type in (N'U')) DROP TABLE [Database].[Schema].[TableName] GO

如果存在于SQL Server上，则无法删除并重新创建表

3 个答案: