<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
      當前位置:
      首頁 > 數據庫 > T-SQL >
      • sql語句大全之使用IS NULL條件

      • 2015-01-18 21:23 來源:未知
      使用IS NULL條件sql語句大全
      NULL表示未知、不可用或將在以后添加數據,NULL值與零、零長度的字符串或空白(字符值)的含義不同。相反,空值可用于區分輸入的是零(數值列)或空白(字符列)還是無數據輸入(NULL可用于數值列和字符列)。
      在WHERE子句中使用IS NULL條件可以查詢某一數據值為NULL的數據信息。反之要查詢數據庫中的值不為NULL時,可以使用IS NOT NULL關鍵字。使用IS NULL條件的語法格式為:
      WHERE column IS [NOT] NULL
      例如,在“注冊會員”表中查詢“歷史記錄”列為NULL的注冊會員信息,可以使用下面的語句:
      USE 網店購物系統
      SELECT 會員編號,會員名稱, 消費總額 FROM 注冊會員 
      WHERE  歷史記錄 IS NULL
      在上面的語句中,WHERE子句限定了“歷史記錄”列為NULL的會員信息,執行語句后,得到如圖5-18所示的結果。

      圖5-18  使用IS NULL條件
      相關教程
      江苏快3 53262t.com | www.234279.com | e99345.am | www.365099.bet | www.506921.com | 7779f.cc | www.9422b.com | 603.com | www.msc77.la | www.ybao9.com | mm99900.net | www.45598l.com | js111js.com | www.2090911.com | www.86889.cc | 2141133.com | www.778305.com | 8betbet365.com | www.89880033.com | www.627069.com | 30007v.com | www.hd8679.com | 8200com | www.277tk.com | www.620977.com | 76543j.com | www.050881.com | 1434a.com | www.bmw0004.com | www.371477.com | o00351.com | www.yl13444.com | 30007b.com | www.sk22222.com | www.029509.com | www.agg8887.com | www.2373c.com | pjxianggang.com | www.9464001.com | hgw2777.com | www.508555.com | www.50051o.com | www.58777k.com | www.754880.com | www.0223889.com | www.6832i.com | 99567c.com | www.55676v.com | 30171177.com | www.js69vv.cc | 2595o.com | www.4212q.com | 80850n.com | www.hg7857.com | 5099ss.com | www.pj0007.com | www.369071.com | www.38200g.com | www.99yfa.com | 6868cc.cc | www.26163f.com | gsq520.com | www.81678f.com | hg00566.com | www.290201.com | 80368dd.com | www.pgylc.cc | 99882007.com | www.68689g.com | ff555l.com | www.26878k.com | 2820s.com | www.26878f.com | 2247ee.com | www.750966.com | 87680q.com | www.811203.com | www.9777hg.com | www.wcp686.com | www.7676760088.com | www.80075e.com | www.878msc.com | xpj708.com | www.4963gg.com | 80368r.com | www.087b.com | 2629.com | www.770960.com | www.25288y.com | t388399.com | www.74109e.com | 2643g.com | www.cn365o.com | 115959.com | www.68993221.com | 2190w.com | www.gai57.com | www.ao899.com | www.550423.com | www.wl6666.cc | yhw9.cc | www.5099aa.com | 13377a.com | www.790711.com | 8185v.com | www.582062.com | www.vns9.cc | 40666111.com | www.558105.com | 61328822.com | www.813230.com | www.219js.com | g2554.com | www.159957.com | 112i.net | ll5443.com | www.393890.com | www.999497.com | 4688jt.com | www.zzwyl.com | 2381dd.com | www.657269.com | www.234677.com | 11422b.com | www.88266x.com | www.xpj2018.com | js14x.com | www.4102y.com | feicai0579.com | www.607265.com | www.kk377.com | wvs8.com | www.ybao4.com | www.7036ee.com | 4116w.com | www.50080w.com | www.7025l.com | dl2883.com | www.78919a.com | www.long6668.com | 39558899.com | www.5856881.com | www.hg148.com | www.28758r.com | 2355d.com | www.778305.com | www.1869w.com | wx3355.com | www.55717w.com | www.ylhg4848.com | 7720744com | www.55558c.com | www.v0033.tv | ww222hg.com | www.flff4.com | www.ag4848g.com | pj00ww.com | www.587344.com | www.70170.com | 2190t.com | 44ww8332.com | www.826016.com | www.00829k.com | 3482q.com | www.35wcp.com | www.6677104.com | 86611s.com | www.769971.com | www.27363k.com | 159666m.com | www.76520u.com | www.78680l.com | www.6666.cm | pp3100.com | www.8816g.com | www.113470.com | 8f06.com | 51200tt.com | www.6889779.com | www.35441777.com | r1915.com | www.269913.com | www.y8821.com | www.ts11888.com | le888d.com | www.0ttz.com | www.5099ss.com | bwin970.co | 3202h.com | www.369888aa.com | www.1700777.com | www.h990.com | bb40033.com | www.339219.com | www.68365x.com | www.307607.com | 7599ff.com | 64111g.com | www.97655g.com | www.3122uu.com | 2767a.com | jixiang8.com | www.701514.com | www.185143.com | www.xpj8898.com | 1443f.com | www.105636.com | www.502206.com | www.76775a.com | 8036k.com | 7xh.vip | www.339968.com | www.rrqp333.com | www.734069.com | 91999.com | yun2888.com | www.727079.com | www.8905.com | www.077313.com | 66458q.com | 1443f.com | bet009900.com | www.64700.com | www.r32939.com | www.bet365609.com | tt9.com | 500000393.com | www.987325.com | www.12136e.com | www.kk1778.com | 1408n.com | 158808.com | 3844h.com | www.769289.com | www.073770.com | www.l5504.com | www.p1186.com | 777818dh.com | byca18.com | 80850c.com | www.915196.com | www.4520011.com | www.c5c44.com | www.77537w.com | blh2018.com | hgcn.com | 53166l.com | www.206882.com | www.7793q.com | www.ba307.com | www.qmc0077.com | www.88837g.com | 38-365-365.com | 4036vv.com | zhcp41.com | 4255qq.com | www.178329.com | www.350zf.com | www.833296.com | www.0055xpj.net | www.221678.com | www.w8606.com | 365225b.com | rrr5657.com | p888888.com | 23800y.com | www.695037.com | www.7116a.com | www.1466g.com | www.0062737.com | www.073343.com | www.696901.com | 7168813.com | js89zc.com | c01234.com | 500000455com | 80878e.com | 6220d.com | www.031566.com | www.839991.com | www.55587.com | www.tyc19988898.com | www.4996zj.com | www.68277999.com | www.622206.com | www.006071.com | www.7607677.com | www.ylg343.com | gg32355.com | y2554.com | qq365i.com | 3967c.com | 5099xx.com | 2338jt.com | biying930vip.com | 44995156.com | wd0000.com | hg999333n.com | 20774466.com | 9103pp.com | 2381ttt.com | hg4299.com | 33432f.com | 84497700.com | 00773g.com | 5099oo.com | ra6616.com | 0600w.cc | 4052ii.com | 6220uu.com | bet36500220.com | 6396d.com | 37111c.com | w9625.com | 316.cc | 53206655.com | 78115577.com | 84490.com | 61321133.com | 081792.com | 3176655.com | www.95449j.com | www.292xpj.com | www.dwc4.com | www.9822msc.com | www.3350.com | www.77c668.com | www.98698e.com | www.5981f.com | www.369404.com | www.78680s.com | www.ejylc11.com | www.84499n.com | www.99431.cc | www.858856.com | www.500021.com | 243d9.com | h2554.com | cp088v.com | x088088.com | 6150.com | 2247t.com | www.hg0233.com | www.6161msccom.com | www.hg8903.com | www.lfcp567.com | www.8bet005.com | www.77201.com | www.21202o.com | www.hjin9.com | www.236002.com | 8901d.com | 1596bb.com | 4556w.com | 3379jj.com | www.pjbet222.com | www.qlm588.com | www.hg8081.com | www.1941.cc | www.36788h.com | www.567620.com | 99559193.com | 4182008.com | 0241e.com | www.55616s.com | www.0866.com | www.pjjtzy.cc | www.33588c.com | www.533081.com | 2546p.com | 69441133.com | 6220u.com | www.0860s.com | www.77731c.com | www.jsdc9666.com | www.22tdc.com | 30019x.com | 1654dd.com | 2346333.com | www.amhg004.com | www.299366.com | www.115527t.com | www.77803h.com | www.355225.com | biying910vip.com | qq365z.com | www.56520z.com | www.5555zh.cm | www.8977800.com | www.701549.com | 77bet.com | 2146q.com | www.vns994.cc | www.333777j.com | www.7249s.com | www.905866.com | 3121gg.com | 86611j.com | www.4107r.com | www.755.so | www.7714h.com | www.387708.com | y888.com | 97618o.com | www.868444.com | www.8998828.com | www.579031.com | 14119455.com | 4123ll.com | www.huidasj.com | www.4323e.com | www.89894d.com | 预览w444000.com | www.81866h.com | www.v15543.com | www.http://489633.com/ | www.w603.com | 5589v.com | 2997706.com | www.bmw0004.com | www.3a436.com | www.71399u.com | 9679m.com | www.7830l.com | www.5517.ag | www.824879.com | 6194js.com | www.5665699.com | www.28000n.com | www.055i.cc | 4023r.com | 6868ii.cc | www.rycp164.com | www.022o.cc | 0652c.com | 8287.com | www.35252j.com | www.772701.com | htbiochem.com | www.hg77719.com | www.7783066.com | www.378017.com | 53358q.com | www.1590mm.com | www.01924.com | 97799a.com | 44488d.com | www.85857m.com | www.33yfa.com | 708365.com | www.76543i.com | www.97828n.vip | zzc88.com | 95244.com | www.472701.com | www.594877.com | 7003xx.com | www.722168.com | www.5441t.com | pjshanghai.com | www.362838.com | www.77537.com | 2373h.com | www.hg8004.com | www.js89q.vip | 4775.com | 6hcc77.com | www.30350u.com | aa33337.com | 97799d.com | www.91779g.com | www.89894d.com | 8290p.com | www.766169.com | www.80075i.com | 0747vv.com | www.467155.com | ooo444000.com | www.6033x.com | www.46876.com | 4997i.com | www.pj0709.com | www.9646r.com | 5002i.com | www.5555by.com | www.522.cc | 4167c.com | www.f526688.com | www.320477.com | 2359.com | www.r999993.com | 65005m.com | www.h7788y.com | www.35155c.com | 867wn.com | www.kxjfg.com | www.354211.com | 8827mmm.com | www.959794.com | 22296aq.com | www.yh8463.com | www.88cmc.com | 2ub.com | www.9hg6668.com | 3178rr.com | www.alpk44.com | www.9149h.com | 1454445.com | www.89599c.com | gc922.com | www.lianhua1.com | www.926799.com | 5360vv.com | www.78680a.com | blr878.com | www.321666.com | www.591031.com | 8866vn77.com | www.83033h.com | 3662p.com | www.4996fj.com | 88903737.com | www.577444.com | www.196902.com | www.28758f.com | www.061wy.com | 463svip.com | www.68993275.com | 118cp.com | www.1559507.com | shen5544.com | www.50000.com | y854.com | www.ms9399.com | www.286898.com | www.8494l.com | www.hw8222.com | 0077886.com | www.54400g.com | bb38648.com | www.hg0298.com | 23456.com | www.63606h.com | ylzz322.com | www.bwinyz24.com | toucai11.com | www.hg702.com | 88894v.com | www.55526v.com | 7240k.com | www.438666.com | 52599f.com | www.16602i.com | hg58111.com | www.378878.com | 5002com | www.ylg538.com | 20188w.com | www.hhvip87.com | 3552f.com | www.c44oo.com | 4165b.com | www.h3065.com | 206402.com | www.bwin980.co | 1104dh.com | www.ba305.com | 30688j.com | www.4988b.cc | cc38648.com | www.9958c.com | 21866i.com | www.900140.com | www.bwin3388.com | www.178571.com | www.5968j.com | 6363k.com | www.1168m.com | 55797y.com | www.58908b.com | 38820011.com | www.50080y.com | 5002400.com | www.729987.com | www.0279006.com | 1479a.com | www.0241n.com | dsh3388.com | www.340388.com | 7240.com | www.6364f.com | www.hg6877.com | www.244747.com | www.814c.com | 66c51.com | www.g83377.com | hg88000.com | www.25688g.com | www.7435a.com | www.106537.com | www.hg0817.com | lll1915.com | www.55074.com | feicai0518.com | www.827737.com | www.4719cc.com | 6423l.com | www.60886h.com | j7742.com | www.959209.com | www.yxlmwx.net | 44663885.com | www.835991.com | 5804o.com | www.621341.com | www.133774.com | 3559pppp.com | www.818993.com | www.shenbobet.com | www.025517.com | www.1068.com | 3388777.com | www.hx6691.com | www.bmw8555.com | 61652b.com | www.2418y.com | www.cr448.com | 5360rr.com | www.xpj778888.com | 76886d.com | www.582914.com | www.hwx518.com | xx67890.com | www.55czt.com | www.22667712.com | 6766ww.com | www.66652m.com | www.3459f.com | 36403355.com | www.983258.com | www.8124s.com | 914903.com | www.80032266.com | www.kb9988.com | 3552d.com | www.1466i.com | www.4763222.com | lehu221.com | www.68993238.com | www.9444hg.com | 37570r.com | www.1666a.com | www.g27229.com | js03.app | www.6661f.cc | www.797077.com | 71707i.com | www.712250.com | www.808888e.com | biying900vip.com | hnzresearch.com | www.99552rr.com | www.zb623.com | ff555a.com | www.624201.com | www.9679z.com | 98345aa.com | www.974288.com | www.224333000.com | 66136xpj.com | 00774mm.com | www.55717o.com | www.995r.net | 813ooo.com | www.938621.com | www.79500m.com | 2381pp.com | 9895m.com | www.sx139972.com | www.607788.com | 4165t.com | www.202437.com | www.69567j.com | www.hg00188.com | jing6333.com | www.626990.com | www.7225j.com | www.yh7777.cc | y77304.com | www.825126.com | www.4996gz.com | www.hg3499.com | xxx5144.com | www.619989.com | www.88325p.com | www.3658766.com | hg3737.com | www.466780.com | www.44118l.com | www.s30226.com | j4255.com | www.094918.com | www.557579.com | www.318008.com | 17798888.com | qijiduchang.vip | www.25688g.com | www.27363t.com | 55295zz.com | 2649ee.com | www.390706.com | www.62778811.com | www.522118.com | 3258y.com | ks3338.com | www.c1363.com | www.652513.com | www.5678655.com | 32424e.com | kk3397.com | www.065wy.com | www.4996kf.com | www.r5588.net | bs112233.com | 5856mmm.com | www.962779.com | www.50685b.com | www.cjycp55.com | 7989g.com | 3726l.com | www.369061.com | www.ampj3438.com | www.85857f.com | www.333222u.com | 22222ylg.com | 500000317.com | www.878455.com | www.88xpj68.com | www.786666.com | www.g67783.com | 3435a.com | 365aaa.vip | www.890994.com | www.091628.com | www.20199ww.com | www.hg609.com | qmbc9.com | w7770.com | www.43818o.com | www.6611a.cc | www.ba509.com | www.112111.com | www.hg08567.com | 6594gg.com | 58802k.com | www.108065.com | www.5441j.com | www.xpj3133.net | www.133suncity.com | www.h7788t.com | 2247y.com | 11005n.com | msyz818.com | www.550294.com | www.55228k.com | www.b3410.com | www.447858.com | www.21365ff.com | ff555t.com | 3405c.com | 16290077.com | 5001c.com | www.759585.com | www.96386g.com | www.85155.com | www.55526j.com | www.pj9448.com | 78117700.com | 9994cc15.com | 145301.com | 9645hh.com | 9734vip.com | www.477680.com | www.3126o.com | www.16065g.com | www.308956.com | www.56655m.com | www.hg773999.com | www.hg50999.com | 9995j.cc | m3405.com | 09200444.com | 4066v.com | 55899h.com | www.126059.com | www.825799.com | www.8039x.com | www.12136.com | www.80080.com | www.net567.com | www.6052365.com | www.www242428.com | www.9068qq.com | www.js96333.com | 500000995.com | t888c.com | 4465.cc | 3066ppp.com | 69990f.com | 58222vv.com | 99151z.com | 76543h.com | 1483bb.com | www.235672.com | www.645477.com | www.138136a.com | www.2632w.com | www.50054t.com | www.05088.com | www.37377e.com | www.792064.com | www.60886a.com | www.00778t.com | www.55060v.com | www.cc55826.com | www.dzcp6666.com | www.mk938.com | www.jm49.com | www.4406132.com | www.49bbs.com | www.hg55662.com | www.pj5664.com | www.yz026.com | www.bali666.com | www.xy466.com | www.hg9388.org | www.yh8283.com | www.7770099.com | www.xb0020.com | www.1594k.com | www.hg0782.com | www.pp8996.com | www.446677.com | www.xpj8548.com | www.d8007.com | www.24k888.vip | www.js5599.vip | www.751cp4.com | www.4212w.com | www.9737oo.com | www.4996jl.com | www.8080999h.com | www.40288r.com | www.0088hgee.com | www.99094t.com | www.js00558.com | www.zmfqp.net | www.33598s.com | www.55czj.com | www.867865.com | www.530196.com | www.178719.com | 33zz8332.com | 3614r.com | ly88888880.com | 141237.com | 32008.com | 7711209.com | 54443k.com | www.bet3651114.com | www.xpj2886.com | www.588277.com | www.wd716.com | www.630269.com | www.52062a.com | www.85144.com | www.3552u.com | www.695037.com | www.83033i.com | a2aaa.com | 3807ii.com | 3559yyyy.com | 7945zz.com | www.50044.com | www.2x0048.com | www.hg032.com | www.4996qh.com | www.222jyh.com | www.pj9060.com | www.50732g.com | www.6608598.com | www.yzqhyz.com | www.38200z.com | www.k66111.com | www.44118u.com | www.983jc.com | 3202.com | 3640pp.com | www.85770b.com | www.94099.com | www.588vip.xyz | www.404677.com | 53262o.com | 68963777.com | www.hg9698.com | www.4102r.com | www.810619.com | 6396c.com | 86811z.com | www.3709884.com | www.63606f.com | www.cp208.com | 3416y.com | dh145.com | www.xpj20888.com | www.1538222.com | www.848566.com | yh77.com | 7935x.com | www.5588212.com | www.89777f.com | www.180121.com | dh8445.com | www.7720o.com | www.pj88u.com | www.055gw.cc | 3078n.com | 0080.com | www.696568.com | www.36582222.com | www.76520u.com | 3552j.com | www.4938f.com | www.w84l.com | www.618393.com | dz3388.com | www.yh8888.cc | www.cn365a.com | www.959079.com | 265609.com | www.bmw555888.com | www.98698x.com | www.tx27.com | 0600m.cc | lts2883.com | www.9737dd.me | www.952583.com | 7508v.com | www.8494i.com | www.377666z.com | www.602983.com | 068089.com | www.3643z.com | www.087c.com | www.89894c.com | 00774ff.com | www.105353.com | www.99677r.com | 22hh8331.com | 2934a.com | www.3396877.com | www.890702.com | 4778822.com | www.j8998.com | www.h6640.com | 65005l.com | 2934s.com | www.848434.com | www.909888.com | 58222e.com | www.22gg940.com | www.4331q.com | 77778940.com | 06006e.com | www.00778a.com | www.313703.com | biying900.com | www.j0055.com | www.033.la | 2677.com | www.79667.com | www.80767l.com | 1335h.com | www.xpj2278.com | www.bjl917.com | 33995156.com | www.86611p.com | www.07679d.com | 26668x.com | 5295uu.com | www.60886h.com | 23233u.com | 243d2.com | www.vnsr938.com | tt2649.com | 091061.com | www.33678ww.com | 11qq8331.com | 47749i.com | www.4546800.com | 85698h.com | ms777.com | www.07770.comm | 555777.net | www.am22222.com | www.0343.com | 61789r.com | www.m22365.com | www.87668f.com | 8668yh.com | www.708118.com | www.66yfa.com | 8344dd.com | www.111889.com | www.701524.com | wz11939.com | www.65066ss.com | www.109615.com | 2355k.com | www.792082.com | 3245l.com | www.10050011.com | www.50080z.com | 2021f.com | www.38238y.com | www.406577.com | 2805t.com | www.wns99.me | 2338090.com | www.y18001.com | www.66ffo.com | 4255i.com | www.009159.com | 88119w.com | www.882589.com | www.53900f.com | 2214d.com | www.808888q.com | www.32123v.com | www.682833.com | www.97655b.com | 867wn.com | www.i456x.com | www.50052i.com | www.7435r.com | www.61233d.com | 5350l.com | www.2266605.com | 22291155.com | www.4107o.com | www.022t.cc | 8988b.com | www.258908.com | 6175kk.com | www.990909.com | www.234297.com | www.0967111.com | www.53900n.com | 3467n.com | www.n7764.com | hg9168.vip | www.665335.com | www.396477.com | www.86611o.com | www.60108m.com | l01234.com | www.332337.com | x0022.tv | www.79888.com | tyc1318.com | www.4972zz.com | www.aa3126.com | hhh8827.com | www.85858hh.com | hhh4165.com | www.07679c.com | 8381mm.com | www.19019i.com | 226688f.vip | www.118sjz.cc |