2008年6月25日收集SQL命令：
|
2008年6月25日 11:12:28 <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">IF <span style="color: #000000">?<span style="color: #ff00ff">OBJECT_ID<span style="color: #000000">(<span style="color: #ff0000">'<span style="color: #ff0000">Price_history<span style="color: #ff0000">'<span style="color: #000000">,<span style="color: #ff0000">'<span style="color: #ff0000">U<span style="color: #ff0000">'<span style="color: #000000">)?<span style="color: #0000ff">IS<span style="color: #000000">?<span style="color: #808080">NOT<span style="color: #000000">?<span style="color: #0000ff">NULL<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">DROP<span style="color: #000000">?<span style="color: #0000ff">TABLE<span style="color: #000000">?Price_history2.复到一个表的表结构以开成一个新表。 <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">SELECT <span style="color: #000000">?<span style="font-weight: bold; color: #800000">1<span style="color: #000000">?<span style="color: #0000ff">AS<span style="color: #000000">?ProductID,UnitPrice?<span style="color: #0000ff">AS<span style="color: #000000">?OldPrice,UnitPrice?<span style="color: #0000ff">AS<span style="color: #000000">?NewPrice,<span style="color: #ff00ff">GETDATE<span style="color: #000000">()?<span style="color: #0000ff">AS<span style="color: #000000">?Date<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">INTO<span style="color: #000000">?Price_history<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">FROM<span style="color: #000000">?dbo.Products<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">WHERE<span style="color: #000000">?<span style="font-weight: bold; color: #800000">1<span style="color: #808080">=<span style="font-weight: bold; color: #800000">03.判断某触发器是否存在？ <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">IF <span style="color: #000000">?<span style="color: #ff00ff">OBJECT_ID<span style="color: #000000">(<span style="color: #ff0000">'<span style="color: #ff0000">trg_Products_u<span style="color: #ff0000">'<span style="color: #000000">,<span style="color: #ff0000">'<span style="color: #ff0000">TR<span style="color: #ff0000">'<span style="color: #000000">)?<span style="color: #0000ff">IS<span style="color: #000000">?<span style="color: #808080">NOT<span style="color: #000000">?<span style="color: #0000ff">NULL<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">DROP<span style="color: #000000">?<span style="color: #0000ff">TRIGGER<span style="color: #000000">?trg_Products_u;<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">GO4.创建一个<font color="#800000">触发器 <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">CREATE <span style="color: #000000">?<span style="color: #0000ff">TRIGGER<span style="color: #000000">?trg_Products_u?<span style="color: #0000ff">ON<span style="color: #000000">?dbo.Products?<span style="color: #0000ff">FOR<span style="color: #000000">?<span style="color: #0000ff">UPDATE<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">AS<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #008080">--<span style="color: #008080">如果更新的不是UnitPrice或没有更新直接返回<span style="color: #008080"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">IF<span style="color: #000000">?<span style="color: #808080">NOT<span style="color: #000000">?<span style="color: #0000ff">UPDATE<span style="color: #000000">(UnitPrice)?<span style="color: #808080">OR<span style="color: #000000">?<span style="font-weight: bold; color: #008000">@@ROWCOUNT<span style="color: #808080">=<span style="font-weight: bold; color: #800000">0<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">RETURN<span style="color: #000000">;<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">ELSE<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">INSERT<span style="color: #000000">?<span style="color: #0000ff">INTO<span style="color: #000000">?price_history//实现了在更新价格时在日志表里记录下原始价格和新价格<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">SELECT<span style="color: #000000">?i.ProductID,d.UnitPrice,i.UnitPrice,<span style="color: #ff00ff">getdate<span style="color: #000000">()<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">FROM<span style="color: #000000">?inserted?i<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???????? <span style="color: #808080">join<span style="color: #000000">?deleted?d //用Inserted和Deleted这两个表实现：）<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???????? <span style="color: #0000ff">on<span style="color: #000000">?i.ProductID<span style="color: #808080">=<span style="color: #000000">d.ProductID<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">GO5.一个带多表查询的UPdate语句 <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">update <span style="color: #000000">?p<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">set<span style="color: #000000">?UnitPrice<span style="color: #808080">=<span style="color: #000000">UnitPrice<span style="color: #808080"><span style="font-weight: bold; color: #800000">1.5<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">from<span style="color: #000000">?dbo.Products?p<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #808080">join<span style="color: #000000">?dbo.Suppliers?s<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">on<span style="color: #000000">?p.SupplierID<span style="color: #808080">=<span style="color: #000000">s.SupplierID<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">where<span style="color: #000000">?s.city<span style="color: #808080">=<span style="color: #000000">N<span style="color: #ff0000">'<span style="color: #ff0000">London<span style="color: #ff0000">'6.检查、创建、执行存储过程 <img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"><span style="color: #0000ff">IF <span style="color: #000000">?<span style="color: #ff00ff">OBJECT_ID<span style="color: #000000">(<span style="color: #ff0000">'<span style="color: #ff0000">prc_UpdateProductPrice<span style="color: #ff0000">'<span style="color: #000000">,<span style="color: #ff0000">'<span style="color: #ff0000">P<span style="color: #ff0000">'<span style="color: #000000">)?<span style="color: #0000ff">IS<span style="color: #000000">?<span style="color: #808080">NOT<span style="color: #000000">?<span style="color: #0000ff">NULL<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">DROP<span style="color: #000000">?<span style="color: #0000ff">PROC<span style="color: #000000">?prc_UpdateProductPrice;<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">GO<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">CREATE<span style="color: #000000">?<span style="color: #0000ff">PROCEDURE<span style="color: #000000">?prc_UpdateProductPrice<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">WITH<span style="color: #000000">?RECOMPILE<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">AS<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">BEGIN<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">SET<span style="color: #000000">?NOCOUNT?<span style="color: #0000ff">ON<span style="color: #000000">;<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">update<span style="color: #000000">?p<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">set<span style="color: #000000">?UnitPrice<span style="color: #808080">=<span style="color: #000000">UnitPrice<span style="color: #808080"><span style="font-weight: bold; color: #800000">1.5<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">from<span style="color: #000000">?dbo.Products?p<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???????? <span style="color: #808080">join<span style="color: #000000">?dbo.Suppliers?s<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???????? <span style="color: #0000ff">on<span style="color: #000000">?p.SupplierID<span style="color: #808080">=<span style="color: #000000">s.SupplierID<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top">???? <span style="color: #0000ff">where<span style="color: #000000">?s.city<span style="color: #808080">=<span style="color: #000000">N<span style="color: #ff0000">'<span style="color: #ff0000">London<span style="color: #ff0000">'<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">END<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">GO<span style="color: #000000"><img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">EXEC<span style="color: #000000">?prc_UpdateProductPrice<img alt="" src="https://www.52php.cn/res/2019/03-05/01/a6339ee3e57d1d52bc7d02b338e15a60.gif" align="top"> <span style="color: #0000ff">GO（编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |