Question

请协助。我正在尝试编写一个脚本来更改表中具有依赖项的列的数据类型。所以我决定组合脚本并从创建临时表开始，将数据从正确的表中移开，这样我就可以删除它，然后使用相关列的新数据类型重新创建它。组合的脚本执行得很好，但现在它们似乎锁定了数据库中的其他事务，当我关闭脚本时，我得到标题中的错误。这是我的代码......

    SET NOCOUNT ON
BEGIN TRY
    BEGIN TRAN  
        PRINT '1.Drop Temporary Table'              
        IF  EXISTS (SELECT * 
              FROM sys.objects 
        WHERE object_id = OBJECT_ID(N'EmptyDepot.StoreStockTakeTemp') 
        AND type in (N'U'))

        DROP TABLE  EmptyDepot.StoreStockTakeTemp       
        PRINT '====Table Dropped'

        PRINT '2.Create Temporary Table'    
        CREATE TABLE EmptyDepot.StoreStockTakeTemp
        (
            StoreStockTakeID        INT                     NOT NULL, 
            CntrNum                 VARCHAR(11)             NOT NULL, 
            DepotID                 INT                     NOT NULL, 
            StockCaptureDate        DATE                    NOT NULL, 
            ChUser                  VARCHAR(50)             NOT NULL, 
            ChDate                  SMALLDATETIME           NOT NULL, 
            ChStamp                 TIMESTAMP               NOT NULL,
        )       
        PRINT '====Temporary Table Created'

        PRINT '3.Populate Temporary Table'
        INSERT INTO EmptyDepot.StoreStockTakeTemp
        (
            StoreStockTakeID, 
            CntrNum, 
            DepotID, 
            StockCaptureDate, 
            ChUser, 
            ChDate
        )
        SELECT StoreStockTakeID, 
            CntrNum, 
            DepotID, 
            StockCaptureDate, 
            ChUser, 
            ChDate
        FROM EmptyDepot.StoreStockTake
        PRINT '====Temporary Table Populated'

        PRINT 'Begin Transaction'
        PRINT '================='
        PRINT '4.Drop Table'
        IF  EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[EmptyDepot].[PK_StoreStockTakeID]') AND parent_object_id = OBJECT_ID(N'[EmptyDepot].[StoreStockTake]'))
        ALTER TABLE [EmptyDepot].[StoreStockTake] DROP CONSTRAINT [PK_StoreStockTakeID]     

        IF  EXISTS (SELECT * FROM sys.foreign_keys WHERE object_id = OBJECT_ID(N'[EmptyDepot].[UX_CntrNum_DepotID]') AND parent_object_id = OBJECT_ID(N'[EmptyDepot].[StoreStockTake]'))
        ALTER TABLE [EmptyDepot].[StoreStockTake] DROP CONSTRAINT [UX_CntrNum_DepotID]      

        IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[EmptyDepot].[StoreStockTake]') AND type in (N'U'))
        DROP TABLE [EmptyDepot].[StoreStockTake]
        PRINT '====Table Dropped'

        PRINT '5.Re-Create Table'
        SET ANSI_NULLS ON
        SET QUOTED_IDENTIFIER ON
        SET ANSI_PADDING ON

        CREATE TABLE EmptyDepot.StoreStockTake
        (
            StoreStockTakeID        INT                     NOT NULL, 
            CntrNum                 VARCHAR(11)             NOT NULL, 
            DepotID                 INT                     NOT NULL, 
            StockCaptureDate        DATE                    NOT NULL, 
            ChUser                  VARCHAR(50)             NOT NULL, 
            ChDate                  SMALLDATETIME           NOT NULL, 
            ChStamp                 TIMESTAMP               NOT NULL,

             CONSTRAINT PK_StoreStockTakeID PRIMARY KEY CLUSTERED 
        (
            StoreStockTakeID ASC
        )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON "PRIMARY"
        ) ON "PRIMARY"
        PRINT '====Table Created'

        PRINT '6.Populate Table'
        INSERT 
        INTO EmptyDepot.StoreStockTake
        (
            StoreStockTakeID, 
            CntrNum, 
            DepotID, 
            StockCaptureDate, 
            ChUser, 
            ChDate
        )
        SELECT StoreStockTakeID, 
            CntrNum, 
            DepotID, 
            StockCaptureDate, 
            ChUser, 
            ChDate
        FROM EmptyDepot.StoreStockTakeTemp
        PRINT '====Table Populated'

        COMMIT TRAN
        PRINT 'Transaction Committed'
        PRINT '====================='       

END TRY

BEGIN CATCH

    PRINT ERROR_NUMBER()
    PRINT ERROR_MESSAGE()
    PRINT ERROR_LINE()
    ROLLBACK
    PRINT 'Transaction Rolled Back'
    PRINT '=======================' 

END CATCH

Answer 1

脚本有一些问题..

如果有人在您的脚本执行时插入行会怎样？
你在新表中不需要约束（UX_CntrNum_DepotID）吗？
索引怎么样？可能没想到......
您可能只需重命名临时表，这样您就不需要额外插入..

关于未通信的事务 - 无法看到原因，但也许您在执行所描述的命令之前启动了一些事务？

存在未提交的事务/超出锁定请求超时时间

1 个答案: