Question

我有一堆SQL语句要执行以更新数据库的模式 - 它们都可以单独运行（即当我一个接一个地手动运行它们）但是当我尝试组合时遇到问题将它们整合到一个脚本中，包含一些版本控制逻辑。

我的脚本如下：

DECLARE @VersionCode varchar(20)
DECLARE @Description varchar(50)
DECLARE @Author varchar(20)
DECLARE @AppVersion varchar (10)

SET @VersionCode = 'version code';
SET @Description = 'description';
SET @Author = 'author';
SET @AppVersion = 'app version';

BEGIN
    IF NOT EXISTS (SELECT * FROM [Version] WHERE [VersionCode] = @VersionCode)
    BEGIN
        ALTER TABLE [Journal] ADD [BreakDurationNew] INT NULL
        UPDATE [Journal] SET BreakDurationNew = BreakDuration
        ALTER TABLE [Journal] DROP COLUMN [BreakDuration]
        EXEC sp_rename 'Journal.BreakDurationNew', 'BreakDuration', 'COLUMN';

        -- create triggers on JournalBreak so that BreakDuration on Journal is updated
        CREATE TRIGGER TR_JournalBreak_Insert ON [JournalBreak]
        FOR INSERT
        AS  
        BEGIN
            UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM INSERTED) 
        END

        CREATE TRIGGER TR_JournalBreak_Update ON [JournalBreak]
        FOR UPDATE
        AS  
        BEGIN
            UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM INSERTED)
            UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM DELETED)
        END

        -- insert version record
        INSERT INTO [RG].[dbo].[Version] (VersionCode, Description, Author, AppVersion) VALUES
        (@VersionCode, @Description, @Author, @AppVersion)
    END
END

我的猜测是我有一些东西（或一堆东西！）我的脚本语法错误但我目前无法发现它。有人可以帮忙吗？

喝彩！

Answer 1

尝试@GordonLinoff评论

DECLARE @VersionCode VARCHAR(20) = 'version code'
DECLARE @Description VARCHAR(50) = 'description'
DECLARE @Author VARCHAR(20) = 'author'
DECLARE @AppVersion VARCHAR(10) = 'app version'
DECLARE @CMD NVARCHAR(Max) = ''

BEGIN
    IF NOT EXISTS (
            SELECT *
            FROM [Version]
            WHERE [VersionCode] = @VersionCode
            )
    BEGIN
        SET @CMD = 'ALTER TABLE [Journal] ADD [BreakDurationNew] INT NULL'
    EXEC SP_EXECUTESQL @CMD

    SET @CMD = 'UPDATE [Journal] SET BreakDurationNew = BreakDuration

    ALTER TABLE [Journal] DROP COLUMN [BreakDuration]'

    EXEC SP_EXECUTESQL @CMD

    EXEC sp_rename 'Journal.BreakDurationNew','BreakDuration','COLUMN';

    -- create triggers on JournalBreak so that BreakDuration on Journal is updated
    SET @CMD = '
    CREATE TRIGGER TR_JournalBreak_Insert ON [JournalBreak]
    FOR INSERT
    AS  
    BEGIN
        UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM INSERTED) 
    END'

    EXEC SP_EXECUTESQL @CMD

    SET @CMD = '
    CREATE TRIGGER TR_JournalBreak_Update ON [JournalBreak]
    FOR UPDATE
    AS  
    BEGIN
        UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM INSERTED)
        UPDATE [Journal] SET BreakDuration = (coalesce([dbo].[CalculateJournalBreak]([JournalId]),(0))) WHERE [JournalId] IN (SELECT JournalId FROM DELETED)
    END
    '

    EXEC SP_EXECUTESQL @CMD

    -- insert version record
    INSERT INTO [RG].[dbo].[Version] (VersionCode, Description, Author, AppVersion) VALUES
    (@VersionCode, @Description, @Author, @AppVersion)
END
END

Answer 2

看起来你正试图发明某种补丁机制。我建议制作单独的脚本：

某些脚本会检查您在特定服务器上的版本，并决定是否运行真正的补丁脚本
直截了当＆＃34;愚蠢＆＃34;补丁脚本，包含适用于确定版本的所有DDL和DML语句（需要使用GO分隔符）

所以我的建议是开发一个流量控制工具，给它一个功能来确定服务器上的版本和另一个功能 - 将适当的补丁脚本发送到sqlcmd.exe。并且可能检查错误（如果有的话）。这甚至可以是批处理文件（* .cmd）。

单独的T-SQL语句单独运行，但组合时不运行

2 个答案: