国产成人毛片视频|星空传媒久草视频|欧美激情草久视频|久久久久女女|久操超碰在线播放|亚洲强奸一区二区|五月天丁香社区在线|色婷婷成人丁香网|午夜欧美6666|纯肉无码91视频

sql觸發(fā)器insert實(shí)例 SQL語(yǔ)句創(chuàng)建INSERT觸發(fā)器?

SQL語(yǔ)句創(chuàng)建INSERT觸發(fā)器?1.createtriggerinsertu banji ontu banji after insert as if(tnonotin(selecttnofromtu

SQL語(yǔ)句創(chuàng)建INSERT觸發(fā)器?

1.createtriggerinsertu banji ontu banji after insert as if(tnonotin(selecttnofromtu banji))print “不go 2.createtriggerdeleteu banji ontu banji fordelete as if((selectcount(*)from tu banji,deleted where t_banji.tno=已刪除.tno)0)刪除wheretnoin(選擇tnofromtu banji,刪除wheret)_banji.tno=已刪除(tno)走