<address id="xpjh9"><listing id="xpjh9"><meter id="xpjh9"></meter></listing></address>

<address id="xpjh9"><address id="xpjh9"><listing id="xpjh9"></listing></address></address>
<noframes id="xpjh9">
<noframes id="xpjh9">

<address id="xpjh9"><address id="xpjh9"><listing id="xpjh9"></listing></address></address>
    <form id="xpjh9"></form><address id="xpjh9"><listing id="xpjh9"><menuitem id="xpjh9"></menuitem></listing></address>

      <noframes id="xpjh9">
      VB.net 2010 視頻教程 VB.net 2010 視頻教程 VB.net 2010 視頻教程
      SQL Server 2008 視頻教程 c#入門經典教程 Visual Basic從門到精通視頻教程
      • sql語句大全之編寫高效的事務處理代碼

      • 2016-07-30 09:17 來源:未知

      8.1 編寫高效的事務處理代碼

      ?         批處理順序的批理批中的每一個事務。在線處理系統(OLTP)一次處理一個事務。使用這兩種方式都要有一個有一個行之有效的方法來對handles recovery
      ?         避免使用不必要的大事務。
      ?         在用戶自定義事務中從來不要使用DDL語句(比如CREATE TABLE或者SELECT INTO),因為它將會在事務的執行過程中鎖定Sysobjects 和sysindexes。一個例外就是數據庫更改語句。
      ?         最小化事務執行的時間
      ?         在事務中以相同的順序使用數據庫對象來最小化死鎖。
      ?         總是對錯誤進行檢查,如果有錯誤發生,回滾事務
       
      例如:
      IF @@TRANCOUNT = 0 BEGIN TRAN
      IF @@TRANCOUNT > 1 ROLLBACK TRAN

      8.2 批處理

      在批處理文件中使用OSQL來調用存儲過程和其它的SQL腳本.
      如果服務器使用NT集成的驗證,使用/E 選項來打開信任連接.而不能使用/U /P.
       
      下面是一個在NT環境下使用批處理的例子,如果有任何錯誤發生,它將會重試2次.
       
      set sp=LevelSalesTransactions                                           >>%log%
      set qry=osql /S%facsvr% /dstaging /E /b /n /I /w250 /H%_Job_Name%  /Q "exec %sp% '%1', %Semaphore% " >> %log%
      (%qry% || (sleep 60 & %qry% || (sleep 60 & %qry%)))                            >>%Log%
      if errorlevel 1 set errmsg=***%_job_name% failed running %sp% & goto problem
       
      :Finish
      call FINISHED.cmd
      goto done
       
      :problem
      call errhandl.cmd
       
      :done
       

      附錄A:最常見的不應該出現的問題

       
      數據庫設計和開發標準描述我們在數據庫系統的開發過程中應該怎么做,為了更好的強調這一點,下面的列表描述了哪些不應該做.
      1.        創建沒有主健的表
      2.        創建沒有clustered索引的表
      3.        不使用事務來強制數據的一致性和完整性.
      4.        使用了事務,但是即不檢查是是否有錯誤發生,也不對有問題的事務進行回滾.或者是沒有對有錯誤發生的事務進行后續的錯誤處理.
      5.        在數據庫中不強制父子(或者主外鍵)關系,忽略了參照完整性.
      6.        沒有對安裝,備份,恢復和維護等的具體計劃.
      7.        在數據庫系統開發后來實現安全性或者是根本就沒有對安全性進行設計.
      8.        在數據庫模型設計完成之前進行開發,然后對數據庫構架進行分修正.
      9.        在主外鍵關系的相應列中數據類型不匹配.
      10.    在數據庫中有無關的冗余數據.
      11.    不在存儲過程中加上合理的注釋。
      12.    在寫過代碼之后再寫設計文檔或者根本就不寫設計文檔.
      13.    不對設計和編碼進行檢查.
       
       
       
      相關教程
      江苏快3 www.hg3006.tw | www.99094l.com | 3g88.com | www.36788y.com | 5478e.com | www.807835.com | www.xin888999.com | hd49499.com | www.091777.com | 2595v.com | www.4809l.com | 3202z.com | www.fh52.com | www.xpj7233.com | mm3189.com | www.115527c.com | HGW3300.com | www.763659.com | www.wns08888.com | vic0308.com | www.r32031.com | fc9596.com | www.812780.com | www.992254.com | 2709m.com | www.7714l.com | 9194js.com | www.77802v.com | www.27363c.com | 53262ss.com | www.75wcp.com | www.3834504.com | w1915.com | www.78680o.com | 3169v.com | www.356477.com | www.99393.com | 9679n.com | www.ban57.com | www.33gg940.com | 6543sun.com | www.c98478.com | www.88jt09.com | hg999333p.com | www.89677c.com | blr8033.com | www.320667.com | www.tt55826.com | changlecai.com | www.0601h.com | www.yh7099.com | 22207p.com | www.4331p.com | www.21365bb.com | x9186.com | www.80767n.com | www.7025q.com | 2008ee.com | www.66332l.com | www.pp224.cc | rrr5701.com | www.nnw6.com | www.66c668.com | 38850011.com | www.005845.com | www.f83377.com | 4444661.com | 2997701.com | www.sx139974.com | www.675621.com | 553955.com | www.zch2.com | www.1168l.com | 05071111.com | 7935v.com | www.hbet98.com | www.woaicp666.com | 6519822.com | www.qj35.com | www.5981h.com | 1294s.com | 5651j.com | www.6832h.com | www.000084.com | 7249b.com | www.187513.com | www.32031.com | www.323006.com | 3556vip5.com | www.672166.com | www.sb5504.com | 1463h.com | 2709h.com | www.mcw7.com | www.cn365a.com | www.hg9092.com | 1636004.com | www.022sh.cc | www.g69096.com | www.38200n.com | 3522vv.com | www.526733.com | www.m.195668.com | www.22js66.com | 57157.com | a997.com | www.81678d.com | www.1919msc.com | 97799e.com | 61320099.com | www.653192.com | www.12136q.com | www.fh9000.com | JS1388n.com | 2546l.com | www.513.vip | www.686102c.com | www.365uu6.com | xhtdbaidu.com | 1468lll.com | www.60007d.com | www.72710.com | www.sb8002.com | 55818g.com | www.246841.com | www.7239p.com | www.662412.com | www.8124q.com | pj00ll.com | 59js.com | www.cb3288.com | www.88325l.com | www.js44444.com | 2247ll.com | 33018.com | bwin8a.com | www.52072r.com | www.8850w9.com | www.777444m.com | 000000oe.cn | 2222k95.com | www.501210.com | www.ya2019y.com | www.sb5504.com | www.188tyc.com | 44552007.com | 559649.com | www.189370.com | www.60123r.com | www.686102c.com | www.js8894.com | 005495.com | 7599r.com | 67890dd.com | www.498266.com | www.35155n.com | www.06386622.com | www.569393a.com | www.boma0157.com | 3202z.com | v1155.tv | b62.com | blr6644.com | www.959209.com | www.430188.com | www.291693.com | www.bg5858.com | www.1111wns.com | 2543006.com | 8159ee.cc | 5005s.com | www.66621i.com | www.igcp3.com | www.506600.com | www.5181889.com | www.063sunbet.com | www.323567.com | 87680q.com | js57666.com | 58222a.com | 34545.com | 3225o.com | www.305922.com | www.979738.com | www.95666w.com | www.38775kk.com | www.6668ylg.com | www.37728.com | www.23427q.com | www.645suncity.com | 55588.com | 9659x.com | 6063331.com | h77304.com | 71366k.com | www.377192.com | www.915056.com | www.8499e.com | www.xj445566.com | www.tai3366.com | www.33678ii.com | www.4212s.com | www.lfcp567.com | www.8885554.com | www.221155.com | www.10050011.com | www.114suncity.com | www.6491a.com | www.pj80888.com | 5002ttt.com | 2767u.com | 0229422.com | 964477.com | 4288k.com | 2324ddd.com | 756756d.com | hg9188.com | 66300vip12.com | 1317726.com | 3122ee.com | 6601.com | 3983017.com | 40033qq.com | 5551779.com | 463d7.com | 6699vn77.com | 22205a.com | jzcp883.com | 1468jjj.com | tt6821.com | 33313q.com | 3559r.com | 88851b.com | jixiang10.com | 00w99.vip | hjcp22.com | dz0777.com | 0332c.com | 3640i.com | 4025s.com | shenlaoxi.com | 55331pp.com | hh1088.com | 80850u.com | 6868gg.cc | 3121y.com | xpj77123.com | www.567pj.com | www.m.8235n.com | www.943a29.com | 365225d.com | 8036pp.com | 60540022.com | 6269cc.com | 11018o.com | 3178r.com | 81511j.com | www.4763118.com | www.e22365.com | www.hg8561.com | www.980999.com | www.98bgo.com | www.58404b.com | www.6664j.com | www.9646q.com | www.66653.com | www.qilc7.com | www.320667.com | 89439922.com | y888.com | 092120.com | 131q.net | www.pj2016.com | www.hg8259.com | www.120509.com | www.5679527.com | www.16065k.com | www.788cb.com | www.403189.com | 228888q.com | 4255lll.com | o1915.com | yh888j.com | www.8694a.com | www.4646123.com | www.8884hj.com | www.3775x.com | www.8970.com | www.35155a.com | yl018.com | 86611t.com | 365225d.com | www.06797r.com | www.rycp167.com | www.56011q.com | www.7116c.com | www.065966.com | 9566498.com | 00755d.com | 6594mm.com | www.hg6009.com | www.i80288.com | www.89338c.com | www.494969.com | 0747aa.com | 38244g.com | www.pj567.com | www.888ding.com | www.38775ss.com | www.2188cai.com | www.60007u.com | 33567w.com | 8036v.com | www.363788.com | www.4212t.com | www.7239r.com | www.215889.com | 008423.com | 58-mm.com | www.hg1668.com | www.cn365l.com | www.57578g.com | www.39500u.com | t1458.com | 4052w.com | www.077313.com | www.984707.com | www.598074.com | dz75166.com | 58222nn.com | www.yh0999.com | www.lhg5555.com | www.fcff1.com | 8577o.cc | 3049y.com | www.2998w.com | www.468860.com | www.756586.com | 3522pp.com | jjjj004.com | www.604700.com | www.6939e.com | www.106295.com | 38244u.com | www.hg5588.me | www.917090.com | www.rrle5.com | hg0491.com | 1077iii.com | www.js888800.com | www.77114d.com | 500000593.com | 8569855.com | www.xpj5552.com | www.178337.com | www.207882.com | 1104007.com | www.9996hh.com | www.60886g.com | www.444216.com | 41188811.com | www.pj2598.com | www.50hd.cc | www.88266v.com | d1915d.com | www.0777msc.com | www.yl13444.com | www.76520v.com | 11005v.com | www.98qxw.com | www.97655t.com | 7742pp.com | 3049l.com | www.hg98029.com | www.cp2838.com | blhvip13.com | www.2078v.com | www.68993225.com | 2222150.com | 22p88.cc | www.cn365t.com | www.576530.com | 3645.com | www.hg131d.com | www.8499b.com | 5003oo.com | www.m32126.cc | www.47707.net | 496yy.com | 2506d.com | www.laocaipiao.com | www.645977.com | js8502.com | www.055888.com | www.6364k.com | 4288hh.com | www.330099z.com | www.985479.com | 32126i.net | www.76543m.com | www.2418003.com | 706809.net | www.333222v.com | www.x999678.com | 61326699.com | www.bj0011.com | www.28891d.com | cp019.com | www.7025u.com | www.hn896.com | 98345y.com | www.5678655.com | www.81233d.com | tz478.com | www.192299.com | www.qucp2.com | 3242f.com | www.55526u.com | www.588229.com | 55331c.com | www.9951331.com | 55545z.com | www.81866x.com | www.777723.com | 6594jj.com | www.668999.com | www.138136a.com | 3846zzz.com | www.hh635.com | www.001059.com | 233235.com | www.966735.com | 1654j.com | www.34202.com | www.872198.com | 8028522.com | www.06387744.com | 31325z.com | www.hy086.com | www.978960.com | 7788.tt | www.b3846.com | 463n8.com | www.335666.com | www.719969.com | k2306.com | www.62778844.com | 294546.com | www.5049e.com | ylzz1112.com | www.caipiao050.com | www.dao70.com | 2jsbbb.com | www.70669a.com | 93922k.com | www.caiba200.com | P35dd.com | www.6767msc.com | www.916720.com | 0080d.com | www.3978e.com | 3242f.com | www.4521k.com | 1234567cai.com | www.9ag88.com | 8988i.com | www.nnn9702.com | www.715585.com | 922shun.com | www.25688g.com | 0015ff.com | www.55717z.com | b68080.com | www.06820e.com | 6868oo.cc | www.255723.com | 7003s.com | www.3680.com | 3225s.com | www.22gp.com | 1813p.com | www.cr707.com | www.298980.com | www.56520o.com | www.663738.com | www.amhg004.com | www.916733.com | www.agg8887.com | www.caim5.com | jimei6666.com | www.022jl.cc | 11009193.com | www.cb2988.com | 88903838.com | www.910997.com | www.hg6914.com | www.897296.com | www.ag9811.com | www.739915.com | www.md005.com | www.793990.com | www.333xhtd.com | www.652851.com | www.v3303.com | www.397730.com | www.770444.com | www.52303v.com | www.hg514.com | 55155a.com | www.lfcp096.com | 8977ww.com | www.55070f.com | 972t.com | www.86339n.com | 3416t.com | www.2418n.com | bet28t.com | www.3552u.com | www.517ly13.com | www.501433.com | www.2767vv.com | 2222k29.com | www.804171.com | 2146y.com | www.30350g.com | 35222b.com | www.0099wd.com | 2078q.com | www.1035l.com | 866666h.com | www.768806.com | www.t30226.com | www.314213.com | www.848959.com | 2096d.com | www.18123.com | hg55511.com | www.v667788.com | 0606.net | www.9149p.com | www.11hggj.com | www.403489.com | www.vnsr22888.com | 9030o.com | www.4521i.com | 33382ss.com | www.ya939.com | www.hgw2016.com | 2418k.com | www.820031.com | 5501885.com | www.hcjt4.com | www.9679p.com | 9607w.vip | www.86339n.com | 2864e.com | www.330192.com | www.hc9055.com | 91019.com | www.32123r.com | www.76543n.com | 6601.co | www.r999995.com | 2506u.com | www.178135.com | www.yzcp2023.com | 4022t.com | www.c4532.com | www.40686b.com | z18.com | www.68568w.com | www.4107h.com | 2247rr.com | www.590051.com | 50020033.com | 2419.com | www.w84h.com | 3336609.com | 00048a.com | www.j3123.com | 923370.com | www.338071.com | www.n456x.com | 33382vv.com | www.923633.com | www.567771.com | 496.se | www.00840t.com | www.1tgpd.com | 3238.com | www.843881.com | 748.net | 30007d.com | www.469703.com | 500000831.com | sbd023.net | www.2848.tt | www.7777ag4.com | 20833e.com | www.bet73x.com | www.58777q.com | 73567tg7.com | www.02088.com | www.hg5600.com | 0500jc.com | www.982399.com | www.77731.com | 2146a.com | www.68568i.com | www.0600z.cc | www.bet25365.com | 5647p.com | www.089wy.com | www.888msb.com | 8957b.com | www.41518b.com | www.8899nsb.com | www.365109e.com | zhcp59.com | www.gocp0.com | www.c44yy.com | js61z.com | pj90856.com | www.dy964.com | www.vns2831.com | 4340y.com | www.50024u.com | www.522665.com | www.9679700.com | z15666.com | www.342918.com | www.3w26.com | www.hg0096.com | js89w.vip | www.603924.com | www.91779a.com | www.888999yh.com | 8535.com | www.397750.com | www.ba502.com | www.4938s.com | lc99vip.com | www.271902.com | www.9187y.com | www.pj8288.com | 9068yy.com | 0033.cc | www.80075z.com | www.4411111.com | 111122yy.com | 7720h.net | www.918356a.com | www.7.ag | www.535msc.com | 222x2.com | www.55885o.com | www.1358004.com | www.hg93777.com | 588.cc | 3616q.com | www.599734.com | www.blr0044.com | www.92msc.com | 500000794.com | 55966.com | www.609553.com | www.blr2244.com | www.0977711.com | 44rr8331.com | lecaih.com | www.397750.com | www.50wb.top | www.cbvip.com | www.546001.com | vvv1915.com | 0234ff.com | www.3207.com | www.574546.com | www.hg99953.com | 996622tt.com | js01.app | 99567t.com | www.64059.com | www.00778j.com | www.yh04b.com | 500000370.com | 35222.com | xsd-168.com | www.2408b.com | www.62979e.com | www.875808.com | www.68666n.com | 6487lll.com | 56988c.vip | www.599474.com | www.26163e.com | www.9737hh.com | www.9949l.com | 32212x.com | p14666.com | h3410.com | www.579031.com | www.87668g.com | www.06820f.com | www.88184.com | www.xpj8878.com | 3522jj.com | eee5682.com | xici.net | www.355274.com | www.15355f.com | www.42070015.com | www.5966iii.com | www.4tgpd.com | 12742l.com | df8v.com | www.9997048.com | www.sb84.com | nn5443.com | 34c35.com | vip31445.com | 7196cc.com | www.cb2188.com | www.99638d.com | www.33678tt.com | www.20199xx.com | www.006087.com | www.d0709.com | 55797n.com | wfcp333444.com | 5350k.com | www.66376i.com | www.799845.com | www.51515h.com | www.xpj8816.com | www.9737qq.com | www.6666hs.com | www.3335156.com | www.hg288.com | 2844x.com | wanyingjia.com | 23300c.com | 8550500.com | 21866g.com | www.68568u.com | www.622230.com | www.202115.com | www.68682n.com | www.365003.cc | www.i2894.com | www.848777s.com | www.b8444.com | www.24075.com | www.83335k.com | www.76060t.com | 59964bb.com | le888s.com | 6118e.com | 3775v.com | 33313b.com | 0099066.com | 3726l.com | 364810.com | 3435x.com | 30006m.com | feicai0792.com | qq7742.com | www.091181.com | www.320160.com | www.524277.com | www.732779.com | www.hj7987.com | www.1368i.cc | www.1368j.cc | www.2875m.com | www.62355.com | www.34788s.com | www.65707k.com | www.96386x.com | www.99677p.com | www.909938.com | www.q888.com | www.6613644.com | www.1466d.com | www.7340333.com | www.3775r.com | www.55676t.com | www.bjl913.com | www.130a56.com | www.6787758.com | www.bet3651689.com | www.966735.com | www.2418f.com | www.pj56c.com | www.80075p.com | www.41518l.com | www.00665.com | www.371i.cc | www.c6569.com | www.810525.com | www.808731.com | www.579031.com | www.263289.com | 6hcc22.com | 55818d.com | 1675gg.com | 2016.ag | 14799.vip | 2324www.com | df8v.com | gong111.com | www.666xin2.com | www.yinhe1.cc | www.25288h.com | www.5ccc.cc | www.p4042.com | www.5446qq.com | www.33678nn.com | www.7240k.com | www.01822.com | www.9149k.com | www.938537.com | www.531982.com | 13134688.com | 56988pp.com | linxiangf.pw | 07589.com | pj08444.com | 4066gg.com | www.7025n.com | www.2997701.com | www.899500.cc | www.8645002.com | www.9971001.com | www.50024c.com | www.911059.com | www.196073.com | da472.com | 87680l.com | tb2223.com | 88807z.com | www.00618l.com | www.hg6912.com | www.b30666.vip | www.zzyl67.com | www.33997.com | www.613595.com | 0245d.com | 3189x.com | yabo8000.com | 38822299.com | www.kelake22.com | www.jy883.com | www.69567c.com | www.81678b.com | www.745855.com | alpk22.com | 7249j.com | 00774ee.com | www.767xpj.com | www.hg9166.com | www.3116r.com | www.154405.com | www.855085.com | 55331uu.com | x777dl.com | 7742i.com | www.mgm007.com | www.bm246.com | www.960620.com | www.9478v.com | www.106096.com | 77360033.cc | 86811zz.com | www.yh7777.cc | www.ty143.com | www.32031o.com | www.3478l.cc | ra9993.com | x33y.vip | 6245y.com | www.9547l.com | www.hg8ii.com | www.80767d.com | www.317990.com | 1137.com | 69441166.com | www.453009.com | www.4446eee.com | www.61655y.com | www.196052.com | qqq4165.com | 500000830.com | www.vns7000.cc | www.593152.com | www.0014e.com | z47479.com | 35222g.com | www.tyc775.com | www.c555.com | www.83993z.com | www.106096.com | sbdjgj.vip | 4635511.com | www.cc1916.com | www.833296.com | www.394211.com | i86811.com | 30019r.com | www.25959a.com | www.6889797.com | www.359629.com | 7249j.com | www.3435u.com | www.cp0018.com | www.65707z.com | 33dd8332.com | u82365.com | www.9679z.com | www.6687l.com | www.907118.com | 82997.co | 2019pp.cc | www.hjcp55.com | www.84499g.com | 2381www.com | 7003y.com | www.vip7311.com | www.7920o.com | www.440343.com | 0652g.com | www.4763333.vip | www.789ww.com | www.hm7388.com | 8040.am | 3024t.com | www.83568q.com | www.679by.com | 112y.net | 38822299.com | www.33707.com | www.ya150.com | ttt444000.com | s33334048.com | www.cs66.com | www.c5635.com | 206404.com | www.xpj6666.cc | www.c80288.com | www.743633.com | hg56.com | www.368012.com | www.972577.com | 5310.com | 33382cc.com | www.771671a.com | www.83993x.com | 01234zzz.com | hpzx88.com | www.00773f.com | www.745899.com | so66666.cc | www.vns00ss.com | www.504446.com | a2aaa.com | d00351.com | www.vns6608.com | www.606624.com | 01234ttt.com | www.jnh885.com | www.68568l.com | a61653.com | www.my068.com | www.js89c.vip | 88851l.com | 0747ww.com | www.1064a.com | www.559748.com | 3568vv.com | www.520008.net | www.5091j.com | pj600600.com | www.hg0125.com | www.1199.am | 2222k11.com | www.v0030.com | www.yz7706.com | 99111hh.com | ylyrm.com | www.s2894.com | 23233v.com | mgm3242m.com | www.766169.com | www.52303v.com | 64111m.com | www.006786.com | www.34788o.com | 2714.com | www.33678mm.com | 0222.com | 5130.cc | www.4809q.com | 4136e.com | www.365775.com | www.js7583.com | 6613633.com | www.2846h.com | www.49956p.com | hg999666.org | www.72hk.com | www.969713.com | a32355.com | www.808888n.com | www.338057.com | 65005a.com | www.60886w.com | 3424y.com | www.bwin599.com | www.0270x.com | 500000455com | www.87669.com | www.695037.com | vip56787.com | www.2021i.com | 1483r.com | www.v3302.com | www.80065j.com | 38.sb | www.pj111111.com | www.370766.com | vipamdc.com | www.hjdc2007.com | zhcp74.com | www.hg8707.com | www.12015.cc | t21148.com | www.5446tt.com | nn2649.com | www.67797f.com | www.3478h.cc | 8037rrr.com | www.z69096.com | 9103rr.com | www.7979w.net | www.005ac.com | 28839z.com | www.820032.com | o08199.com | www.amh00.com | www.507285.com | 7js345.com | www.dyslot.com | 4255oo.com | www.89599n.com | qq1331.com | www.jz352.com | www.838669.com | 2418005.com | www.0194006.com | tt6832.com | www.19019f.com | 99wb8.com | www.90486.com | www.626990.com | 3938nn.com | www.60108q.com | 4488f.com | www.38775oo.com | dd3189.com | www.hr888.com | 3169i.com | www.47272x.com | www.431506.com | www.xj5577.com | www.055l.cc | 65005y.com | www.bet73q.com | 44772007.com | www.7737gg.com | 0683e.com |