常用sql整理

CREATE PROCEDURE [dbo].[bbs_move_createtopic]
@fid smallint,
@iconid smallint,
@curtid INT OUTPUT
AS
BEGIN
    INSERT INTO [topics] ......
    SET @topicid=SCOPE_IDENTITY()
END

declare @curtid int
exec [createtopic] @fid=@new_fid,@iconid=0,
    @curtid=@curr_topicid OUTPUT

    DECLARE
        @name NVARCHAR(100),
        @id DECIMAL,
        @idcard NVARCHAR(100)=NULL
    
    //声明游标
    DECLARE cur_correctIdCard CURSOR
    FOR
    SELECT 
    ID, NAME, [USER_ID]
    FROM dbo.old_bbstitle 
    WHERE (USER_ID IS NULL OR LTRIM(NAME)=‘‘) 
    OR (NAME IS NULL OR LTRIM(NAME)=‘‘)
    //打开游标
    OPEN cur_correctIdCard
    //开始FETCH
    FETCH NEXT FROM cur_correctIdCard INTO @id,@name,@idcard
    
    //0 FETCH 语句成功
    //1 FETCH 语句失败或此行不在结果集中
    //2 被提取的行不存在
    WHILE(@@FETCH_STATUS=0) 
    BEGIN
        ... ...
        
        FETCH NEXT FROM cur_correctIdCard INTO @id,@name,@idcard
        SET @idcard=NULL
    END
    
    CLOSE cur_correctIdCard
    DEALLOCATE cur_correctIdCard

SELECT * INTO users_bak FROM users

DELETE
FROM dbo.old_clubuser WHERE CLUBUSER_ID
IN(
SELECT MIN(CLUBUSER_ID) FROM dbo.old_clubuser WHERE CLUBUSER_NAME IS NOT NULL AND CLUBUSER_NICKNAME IS NOT NULL
GROUP BY CLUBUSER_NAME,CLUBUSER_NICKNAME
HAVING COUNT(CLUBUSER_NAME)>1
)

BEGIN TRANSACTION trans_correctIdCard
BEGIN TRY
    DECLARE
        @name NVARCHAR(100),
        @id DECIMAL,
        @idcard NVARCHAR(100)=NULL

    COMMIT TRANSACTION trans_correctIdCard
    PRINT ‘SUCCESS‘
END TRY
BEGIN CATCH
    
    ROLLBACK TRANSACTION trans_correctIdCard
    
    PRINT ‘出错：‘+CAST(@@error AS NVARCHAR(MAX))
    PRINT ‘已进行回滚‘

END CATCH