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/*
´¥·¢Æ÷»ñÈ¡SQLÓï¾äÔöÁ¿´«Êä
¹¦ÄÜ£º²¶×½Ð޸ıíµÄSQLÓï¾ä
ʹÓÃ˵Ã÷£º 1¡¢ÏÈн¨Ò»±íÊÖ¶¯Ð´ÈëÖ÷¼üÐÅÏ¢»òÕßΨһË÷Òý
   Create table prmary_key
   (tab_name varchar(255),
    key_name varchar(255))
   --´Ë±í½öÔÚ½¨Á¢´¥·¢Æ÷ʱʹÓ㬽¨ÍêËùÓд¥·¢Æ÷ºó ¼ÇµÃɾ³ý
   2¡¢½¨´¥·¢Æ÷½öÐèÒªÐÞ¸Ä@tab_name±äÁ¿£¬¼´¿É
Create By Yujiang
*/
Declare @cursql  varchar(8000),
 @cursqltmp varchar(8000),
 @curkey  Varchar(500),  --Ö÷¼ü»òΨһË÷Òý
 @curkeytmp Varchar(2000),  --Ö÷¼üÑ­»·ÓÃ
 @curkeywhere Varchar(1000),  --Ö÷¼üÌõ¼þ
 @curkeyjoin Varchar(1000),  --¹ØÁªÌõ¼þ
 @curexecsql varchar(5000),  --Ö´ÐÐSQL
 @curcols varchar(2000),  --ËùÓеÄÁÐÃû
 @curcolstmp varchar(2000),  --Ñ­»·ÓÃ
 @tab_name varchar(255),
 @curtmp  varchar(255),  --Ñ­»·ÓÃ
 @curcoltype varchar(255)  --×Ö¶ÎÊý¾ÝÀàÐÍ
Set @tab_name = 'tj_suggestion'  --¡ïÐèÒªÊÖ¶¯ÐÞ¸Ä
Select @cursql = ' if exists(select * from sysobjects where name = '+ char(39) + 'tr_' + @tab_name +'_ZLYJ' + char(39) + ' and type = ''TR'')'
               + char(13) + char(10)
        + ' drop trigger  tr_'+ @tab_name + '_ZLYJ'
Exec(@cursql)
--»ñÈ¡Ö÷¼ü
Select @curkey = key_name from prmary_key where tab_name =  @tab_name
if (@curkey is Null or @curkey = '')
Begin
 Print @tab_name + 'ûÓÐÖ÷¼ü»òΨһË÷ÒýÎÞ·¨²¶×½SQLÓï¾ä'
 Return
End
Set @curcols = ''
Set @cursqltmp = ''
if right(@curkey,1) <> ','
 Set @curkey = @curkey + ','
 declare @col_name varchar(50)
 Declare #tmp_cur cursor
 for select name from syscolumns where id = object_id(@tab_name)
 open #tmp_cur
 fetch next from #tmp_cur into @col_name
 while @@fetch_status = 0
 &nbs


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