{"id":124,"date":"2017-10-11T08:47:50","date_gmt":"2017-10-11T00:47:50","guid":{"rendered":"http:\/\/www.byxiaoxie.com\/?p=124"},"modified":"2018-01-17T01:15:27","modified_gmt":"2018-01-16T17:15:27","slug":"sql%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.byxiaoxie.com\/?p=124","title":{"rendered":"SQL\u5b66\u4e60\u7b14\u8bb0"},"content":{"rendered":"<pre class=\"pure-highlightjs\"><code class=\"\">1\u3001\u4e3b\u952e\u7ea6\u675f\uff08primary key\uff09\uff1a\u4e00\u4e2a\u8868\u4e2d\u552f\u4e00\u5177\u6709\u6807\u8bc6\u6027\u7684\u5b57\u6bb5\uff0c\u4e00\u822c\u4e00\u4e2a\u8868\u4e2d\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u952e\u3002\u8bbe\u7f6e\u4e86\u4e3b\u952e\u7684\u5b57\u6bb5\uff0c\u8be5\u5b57\u6bb5\u7684\u503c\u4e0d\u91cd\u590d\u3002\r\n2\u3001\u552f\u4e00\u7ea6\u675f\uff08unique\uff09\uff1a\u5f53\u8868\u4e2d\u9664\u4e86\u4e3b\u952e\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u5b57\u6bb5\u9700\u8981\u4fdd\u8bc1\u53d6\u503c\u4e0d\u91cd\u590d\u65f6\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3aunique\u7ea6\u675f\u3002\u4e00\u4e2a\u8868\u53ef\u4ee5\u5b9a\u4e49\u591a\u4e2aunique\u7ea6\u675f\r\n3\u3001\u9ed8\u8ba4\u503c\uff1a\u5e0c\u671b\u8868\u4e2d\u67d0\u4e2a\u5b57\u6bb5\u8bbe\u7f6e\u9ed8\u8ba4\u503c\uff0c\u53ef\u4ee5\u51cf\u5c11\u5f55\u5165\u7684\u65f6\u95f4\u548c\u4e0d\u5fc5\u8981\u7684\u9519\u8bef\u3002\r\n4\u3001Check\u7ea6\u675f\uff1a\u7528\u4e8e\u9650\u5236\u6570\u636e\u503c\u8303\u56f4\u548c\u683c\u5f0f\u3002\u5982\u8bbe\u7f6e\u5206\u6570\u57280-100\u5206\u4e4b\u95f4\uff0c\u91c7\u7528\u4e86check\u7ea6\u675f\u540e\uff0c\u7528\u6237\u4e0d\u80fd\u8f93\u5165\u8d85\u8fc7\u8be5\u8303\u56f4\u7684\u6570\u503c\uff0c\u51cf\u5c11\u9519\u8bef\u3002\r\n5\u3001Foreige key\u7ea6\u675f\uff08\u5916\u952e\u7ea6\u675f\uff09\uff1a\u5916\u952e\u4e00\u822c\u7528\u4e8e\u5efa\u7acb\u4e00\u4e2a\u8868\u6216\u591a\u4e2a\u8868\u7684\u5b57\u6bb5\u4e4b\u95f4\u7684\u5f15\u7528\u8054\u7cfb\u3002\u5fc5\u987b\u8981\u6709\u4e3b\u952e\uff0c\u624d\u80fd\u6709\u5916\u952e\u3002\r\n\r\n\u4e3b\u952e\uff1aCONSTRAINT PK_mytable PRIMARY KEY CLUSTERED (\u5b66\u53f7 ASC))\r\n         \u5b66\u53f7 char(6) not null PRIMARY KEY\r\n\r\nunique\u7ea6\u675f \uff08\u552f\u4e00\u7ea6\u675f\uff09\uff1aCONSTRAINT IX_mytable UNIQUE NONCLUSTERED (ID ASC))\r\n                         \u5b66\u53f7 char(6) not null UNIQUE NONCLUSTERED\r\n\r\ncheck\u7ea6\u675f\uff1aconstraint CK_student_sex check (sex='\u7537' or sex='\u5973') \r\n\r\ndefault\u5b9a\u4e49\uff08\u9ed8\u8ba4\u503c\u8bbe\u7f6e\uff09\uff1a\r\nstr char(10) NOT NULL CONSTRAINT DF_mytable_str DEFAULT ' undefined',\r\n            \u6027\u522b char\uff082\uff09 not null  CONSTRAINT DF_mytable_str DEFAULT \u2018\u7537\u2019\r\n\r\nforeign key \u7ea6\u675f\uff08\u5916\u952e\u7ea6\u675f\uff09\uff1a\r\ndt date NULL CONSTRAINT FK_\u88681_\u88682 FOREIGN KEY(ID) REFERENCES dbo.\u88682 (ID)\r\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/\/\u521b\u5efa\u6570\u636e\u5e93 \u548c \u6570\u636e\u5e93\u65e5\u5fd7\r\ncreate database stu \/\/ stu \u6570\u636e\u5e93\u540d\r\non(\r\nname=stu_dat, \/\/stu_dat \u5e93\u540d\r\nfilename='E:\\SQL\\stu_dat.mdf', \/\/\u6570\u636e\u5e93\u6587\u4ef6\u8def\u5f84\r\nsize=10, \/\/\u521d\u59cb\u5927\u5c0f\r\nmaxsize=100, \/\/\u6700\u5927\u5927\u5c0f\r\nfilegrowth=10% \/\/\u81ea\u52a8\u589e\u957f\r\n)\r\nlog on \/\/\u521b\u5efa\u65e5\u5fd7\u6587\u4ef6\r\n(name=stu_log, \/\/stu_log \u6570\u636e\u5e93\u65e5\u5fd7\u540d\r\nfilename='E:\\SQL\\stu_log.ldf', \/\/\u65e5\u5fd7\u6587\u4ef6\u8def\u5f84\r\nsize=2, \/\/\u521d\u59cb\u5927\u5c0f\r\nmaxsize=unlimited, \/\/\u6700\u5927\u503c\u4e3a\u65e0\u9650\r\nfilegrowth=10 \/\/\u589e\u957f\u503c\u4e3a10MB\r\n)\r\ngo<\/code><\/pre>\n<p><!--more--><\/p>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/\/\u521b\u5efa\u8868 \u548c \u4e3b\u952e\u4e0e\u7ea6\u675f\r\ncreate table XSDA \/\/XSDA \u8868\u540d\r\n(\r\n\u5b66\u53f7 char(6) not null primary key, \/\/char(6)\u578b , \u5b57\u7b26\u4e32\u4e3a6\u5b57\u8282 , not null \u4e0d\u53ef\u4e3a\u7a7a , primary key \u8bbe\u7f6e\u4e3a\u4e3b\u952e\r\n\u59d3\u540d char(8) not null, \r\n\u6027\u522b char(2) not null constraint \u6027\u522b check (\u6027\u522b='\u7537' or \u6027\u522b='\u5973'), \/\/constraint \u8bbe\u7f6e\u6027\u522b\u53ea\u4e3a\u7537\u548c\u5973 \r\n\u7cfb\u540d char(10) not null,\r\n\u51fa\u751f\u65e5\u671f smalldatetime not null, \/\/smalldatetime \u65f6\u95f4\u578b\u9ed8\u8ba44\u5b57\u8282\r\n\u6c11\u65cf char(4) not null,\r\n\u603b\u5b66\u5206 tinyint not null,\r\n\u5907\u6ce8 Text\r\n)<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">create table KCXX \/\/KCXX\u8868\u540d\r\n(\r\n\u8bfe\u7a0b\u7f16\u53f7 char(3) not null primary key,\r\n\u8bfe\u7a0b\u540d\u79f0 char(20) not null,\r\n\u5f00\u8bfe\u5b66\u671f tinyint not null constraint \u5f00\u8bfe\u5b66\u671f check (\u5f00\u8bfe\u5b66\u671f &gt;=0 and \u5f00\u8bfe\u5b66\u671f &lt;=6), \/\/\u5f00\u8bfe\u5b66\u671f\u53ea\u53ef\u4e3a1\u52306\r\n\u5b66\u65f6 tinyint not null,\r\n\u5b66\u5206 tinyint not null\r\n)\r\n\r\n\u65b9\u6cd5\u4e8c\uff1a\r\n\r\ncreate table KCXX\r\n(\r\n\u8bfe\u7a0b\u7f16\u53f7 char(3) not null primary key,\r\n\u8bfe\u7a0b\u540d\u79f0 char(20) not null,\r\n\u5f00\u8bfe\u5b66\u671f tinyint not null constraint \u5f00\u8bfe\u5b66\u671f check (\u5f00\u8bfe\u5b66\u671f between 0 and 6),\/\/\u5f00\u8bfe\u5b66\u671f\u53ea\u53ef\u4e3a1\u52306\r\n\u5b66\u65f6 tinyint not null,\r\n\u5b66\u5206 tinyint not null\r\n)<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">create table XSCJ \/\/XSCJ\u8868\u540d\r\n(\r\n\u5b66\u53f7 char(6) not null,\r\n\u8bfe\u7a0b\u7f16\u53f7 char(3) not null,\r\n\u6210\u7ee9 tinyint,\r\nprimary key (\u5b66\u53f7,\u8bfe\u7a0b\u7f16\u53f7) \/\/\u7ec4\u5408\u4e3b\u952e primary key ([\u5b57\u6bb51],[\u5b57\u6bb52])\r\n)<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u770b\u8868\u7ed3\u6784*\/\r\nexec sp_help xsda\r\ngo\r\n\r\n\/*\u67e5\u770b\u6570\u636e\u7c7b\u578b*\/\r\nexec sp_help\r\ngo\r\n\r\n\/*\u589e\u52a0\u5b66\u5206\u5b57\u6bb5\u540d*\/\r\nuse stu\r\ngo\r\nalter table xscj\r\nadd \u5b66\u5206 tinyint null\r\ngo\r\n\r\n\/*\u5220\u9664\u5b66\u5206\u5b57\u6bb5\u540d*\/\r\nuse stu\r\ngo\r\nalter table xscj\r\ndrop column \u5b66\u5206\r\ngo\r\n\r\n\/*\u4fee\u6539\u59d3\u540d\u5b57\u6bb5\u540d\u7c7b\u578b\u957f\u5ea6*\/\r\nuse stu\r\ngo\r\nalter table xsda\r\nalter column \u59d3\u540d char(10)\r\ngo\r\n\r\n\/*\u4fee\u6539\u51fa\u751f\u65e5\u671f\u5b57\u6bb5\u540d\u7c7b\u578b*\/\r\nuse stu\r\ngo\r\nalter table xsda\r\nalter column \u51fa\u751f\u65e5\u671f datetime\r\ngo\r\n\r\n\/*\u5229\u7528[sp_rename]\u4fee\u6539\u51fa\u751f\u65e5\u671f\u4e3a[birthday]*\/\r\nuse stu\r\ngo\r\nsp_rename 'xsda.\u51fa\u751f\u65e5\u671f','birthday','column'\r\ngo\r\n\r\n\/*\u4fee\u6539\u8868\u540d*\/\r\nuse stu\r\nexec sp_rename'xsda','\u5b66\u751f\u6863\u6848'\r\ngo\r\n\r\n\/*\u5916\u952e\u7ea6\u675f*\/\r\nalter table XKXX\r\nadd \r\nconstraint kc_xsxx foreign key(\u5b66\u53f7) references XSXX(\u5b66\u53f7),\r\nconstraint kc_kcxx foreign key(\u8bfe\u7a0b\u7f16\u53f7) references KCXX(\u8bfe\u7a0b\u7f16\u53f7)\r\ngo\r\n<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u6dfb\u52a0\u591a\u4e2a\u8bb0\u5f55*\/\r\ninsert into Customer(CusNo,CusName,Address,Tel)\r\nvalues\r\n('001','\u6768\u5a77','\u6df1\u5733','0755-22221111'),\r\n('002','\u9648\u840d','\u6df1\u5733','0755-22223333'),\r\n('003','\u674e\u4e1c','\u6df1\u5733','0755-22225555'),\r\n('004','\u53f6\u5408','\u5e7f\u5dde','0755-22227777'),\r\n('004','\u8c2d\u6b23','\u5e7f\u5dde','0755-22229999')\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u4e3a\u6c49\u65cf\u7684\u6570\u636e*\/\r\nuse xs\r\nselect \u5b66\u53f7,\u59d3\u540d,\u51fa\u751f\u65e5\u671f,\u6c11\u65cf = '\u6c49'\r\nfrom xsda\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u7cfb\u540d\u4e3a\u4fe1\u606f\u7684\uff0c\u5e76\u5404\u5217\u7684\u6807\u9898\u5206\u522b\u4e3a mumber , name , mark*\/\r\nuse xs\r\nselect \u7cfb\u540d='\u4fe1\u606f',\u5b66\u53f7 as number,\u59d3\u540d as name,\u603b\u5b66\u5206 as mark\r\nfrom xsda\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xscj\u8868 108\u53f7\u7684\u8bfe\u7a0b\u7684\u6210\u7ee9\uff0c\u5e76\u53bb\u9664\u91cd\u590d\u884c*\/\r\nuse xs\r\nselect distinct \u6210\u7ee9\r\nfrom xscj\r\nwhere \u8bfe\u7a0b\u7f16\u53f7 = 108\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xscj\u8868\u7684\u5b66\u53f7\uff0c\u8bfe\u7a0b\u7f16\u53f7\u548c\u6210\u7ee9\uff0c\u53ea\u8fd4\u56de\u7ed3\u679c\u524d10%*\/\r\nuse xs\r\nselect top 10 percent \u5b66\u53f7,\u8bfe\u7a0b\u7f16\u53f7,\u6210\u7ee9\r\nfrom xscj\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u603b\u5b66\u5206\u572855\u4ee5\u4e0a\u7684\u5973\u751f\u7684\u57fa\u672c\u4fe1\u606f*\/\r\nuse xs\r\nselect *\r\nfrom xsda\r\nwhere (\u603b\u5b66\u5206 &gt; 55 and \u6027\u522b='\u5973')\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u59d3\u540d\u542b\u6709\u6797\u5b57\u7684\u5b66\u751f\u7684\u60c5\u51b5*\/\r\nuse xs\r\nselect *\r\nfrom xsda\r\nwhere \u59d3\u540d like '%\u6797'\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u51fa\u751f\u65e5\u671f\u4e3a1988\u5e74 \u4e0a\u534a\u5e74\u51fa\u751f\u7684\u5b66\u751f\u7684\u59d3\u540d\u548c\u6027\u522b\u548c\u51fa\u751f\u65e5\u671f*\/\r\nuse xs\r\nselect \u59d3\u540d,\u6027\u522b,\u51fa\u751f\u65e5\u671f\r\nfrom xsda\r\nwhere \u51fa\u751f\u65e5\u671f between '1988-1-1' and '1988-6-30'\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2kcxx\u8868\u5f00\u8bfe\u5b66\u671f\u4e3a\u7b2c5\u5b66\u671f\u7684\u6240\u6709\u4fe1\u606f\uff0c\u7ed3\u679c\u6309\u5b66\u5206\u964d\u5e8f\u6392\u5e8f*\/\r\nuse xs\r\nselect *\r\nfrom kcxx\r\nwhere \u5f00\u8bfe\u5b66\u671f=5\r\norder by \u5b66\u5206 desc\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u5e74\u9f84\u6700\u5927\u76843\u540d\u5b66\u751f\u7684\u5b66\u53f7,\u59d3\u540d,\u51fa\u751f\u65e5\u671f*\/\r\nuse xs\r\nselect top 3 \u5b66\u53f7,\u59d3\u540d,\u51fa\u751f\u65e5\u671f\r\nfrom xsda\r\norder by \u51fa\u751f\u65e5\u671f asc\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xscj\u8868\u53d6108\u53f7\u8bfe\u7a0b\u7684\u5e73\u5747\u503c\u548c\u6700\u9ad8\u5206\u3001\u6700\u4f4e\u5206*\/\r\nuse xs\r\nselect \u8bfe\u7a0b\u7f16\u53f7,AVG(\u6210\u7ee9) \u5e73\u5747\u5206,MAX(\u6210\u7ee9) \u6700\u9ad8\u5206,MIN(\u6210\u7ee9) \u6700\u4f4e\u5206\r\nfrom xscj\r\nwhere \u8bfe\u7a0b\u7f16\u53f7=108\r\ngroup by \u8bfe\u7a0b\u7f16\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xscj\u8868\u9009\u4fee108\u53f7\u8bfe\u7a0b\u7684\u5b66\u751f\u4eba\u6570*\/\r\nuse xs\r\nselect \u8bfe\u7a0b\u7f16\u53f7,COUNT(\u5b66\u53f7) \u4eba\u6570\r\nfrom xscj\r\nwhere \u8bfe\u7a0b\u7f16\u53f7=108\r\ngroup by \u8bfe\u7a0b\u7f16\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u4e2d\u7684\u6240\u6709\u7537\u751f\u7684\u603b\u5b66\u5206\u7684\u5e73\u5747\u503c*\/\r\nuse xs\r\nselect AVG(\u603b\u5b66\u5206) \u5e73\u5747\u503c\r\nfrom xsda\r\nwhere \u6027\u522b='\u7537'\r\ngroup by \u6027\u522b\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u7684\u5404\u7cfb\u7537\u751f\u548c\u5973\u751f\u4eba\u6570\uff0c\u5e76\u4ea7\u751f\u4e00\u4e2a\u603b\u4eba\u6570*\/\r\nuse xs\r\nselect \u6027\u522b,COUNT(\u5b66\u53f7) \u4eba\u6570\r\nfrom xsda\r\ngroup by \u6027\u522b\r\ngo\r\nselect COUNT(\u5b66\u53f7) \u603b\u4eba\u6570\r\nfrom xsda\r\ngo\r\n<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2kcxx\u8868\u7b2c5\u5b66\u671f\u5f00\u8bbe\u8bfe\u7a0b\u7684\u8bfe\u7a0b\u7f16\u53f7\uff0c\u8bfe\u7a0b\u540d\u79f0\uff0c\u5f00\u8bfe\u5b66\u671f\uff0c\u5b66\u5206\uff0c\u5e76\u4ea7\u751f\u4e00\u4e2a\u5f00\u8bbe\u8bfe\u7a0b\u603b\u95e8\u6570\u884c*\/\r\nuse xs\r\nselect \u8bfe\u7a0b\u7f16\u53f7,\u8bfe\u7a0b\u540d\u79f0,\u5f00\u8bfe\u5b66\u671f,\u5b66\u5206\r\nfrom kcxx\r\nwhere \u5f00\u8bfe\u5b66\u671f=5\r\ngo\r\nselect COUNT(\u8bfe\u7a0b\u540d\u79f0) \u603b\u884c\u6570\r\nfrom kcxx\r\nwhere \u5f00\u8bfe\u5b66\u671f=5\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xscj\u8868\u7684\u6210\u7ee9\u5e73\u5747\u503c\uff0c\u5927\u4e8e90\u5206\u4ee5\u4e0a\u7684\u5b66\u751f\u5b66\u53f7*\/\r\nuse xs\r\nselect \u5b66\u53f7,AVG(\u6210\u7ee9) \u5e73\u5747\u6210\u7ee9\r\nfrom xscj\r\ngroup by \u5b66\u53f7\r\nhaving avg(\u6210\u7ee9)&gt;85\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u548cxscj\u7684\u8868\u7684\u5168\u90e8\u5b57\u6bb5*\/\r\nuse xs\r\nselect *\r\nfrom xsda inner join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2xsda\u8868\u7684\u5168\u90e8\u6570\u636e\uff0c\u5e76\u53d6xscj\u8868\u7684 \u8bfe\u7a0b\u7f16\u53f7 \u548c \u6210\u7ee9*\/\r\nuse xs\r\nselect xsda.*,xscj.\u8bfe\u7a0b\u7f16\u53f7,xscj.\u6210\u7ee9\r\nfrom xsda inner join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2\u9009\u4fee\u4e86202\u53f7\u8bfe\u7a0b\u7684\u5e76\u6210\u7ee9\u4f18\u79c0\u7684\u5b66\u751f\u59d3\u540d\u53ca\u6210\u7ee9*\/\r\nuse xs\r\nselect \u59d3\u540d,\u6210\u7ee9\r\nfrom xsda join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\nwhere \u8bfe\u7a0b\u7f16\u53f7='202' and \u6210\u7ee9&gt;=90\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5185\u8fde\u63a5\u67e5\u8be2\uff0c\u6267\u884c\u7ed3\u679c\u76f8\u540c*\/\r\nuse xs\r\nselect \u59d3\u540d,\u6210\u7ee9\r\nfrom xsda,xscj\r\nwhere xsda.\u5b66\u53f7=xscj.\u5b66\u53f7 and \u8bfe\u7a0b\u7f16\u53f7='202' and \u6210\u7ee9&gt;=90\r\ngo\r\n<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u67e5\u8be2\u591a\u4e2a\u8868\u7684\u5b57\u6bb5\uff0c\u5e76\u53d6\u8bfe\u7a0b\u540d\u79f0\u4e3a \u8ba1\u7b97\u673a\u6587\u5316\u57fa\u7840 \u548c \u6210\u7ee9\u4e3a\u4f18\u79c0\u7684*\/\r\nuse xs\r\nselect xsda.\u5b66\u53f7,\u59d3\u540d,\u8bfe\u7a0b\u540d\u79f0,\u6210\u7ee9\r\nfrom xsda join xscj join kcxx on xscj.\u8bfe\u7a0b\u7f16\u53f7=kcxx.\u8bfe\u7a0b\u7f16\u53f7 on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\nwhere \u8bfe\u7a0b\u540d\u79f0='\u8ba1\u7b97\u673a\u6587\u5316\u57fa\u7840' and \u6210\u7ee9&gt;=90\r\ngo\r\n<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5de6\u5916\u8fde\u63a5 left outer join *\/\r\nuse xs\r\nselect xsda.*,\u8bfe\u7a0b\u7f16\u53f7,\u6210\u7ee9\r\nfrom xsda left outer join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u53f3\u5916\u8fde\u63a5 right outer join*\/\r\nuse xs\r\nselect xscj.*,\u8bfe\u7a0b\u540d\u79f0\r\nfrom xscj right outer join kcxx on xscj.\u8bfe\u7a0b\u7f16\u53f7=kcxx.\u8bfe\u7a0b\u7f16\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u81ea\u8fde\u63a5*\/\r\nuse xs\r\nselect xsda1.\u59d3\u540d,xsda1.\u5b66\u53f7,xsda2.\u5b66\u53f7\r\nfrom xsda as xsda1 join xsda as xsda2 on xsda1.\u59d3\u540d=xsda2.\u59d3\u540d\r\nwhere xsda1.\u5b66\u53f7&lt;&gt; xsda2.\u5b66\u53f7\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u521b\u5efa\u89c6\u56fe\uff0c\u67e5\u8be2xsda\u8868\u4e2d\u7cfb\u540d\u4e3a\u4fe1\u606f\u7684\u6570\u636e*\/\r\nuse xs\r\ngo\r\ncreate view \u4fe1\u606f\u7cfb_VIEW\r\nas\r\nSELECT *\r\nFROM xsda\r\nwhere \u7cfb\u540d='\u4fe1\u606f'\r\n\r\n\/*\u521b\u5efa\u89c6\u56fe\uff0c\u67e5\u8be2\u5b66\u53f7,\u59d3\u540d,\u6210\u7ee9\u7684\u5e73\u5747\u503c\uff0c\u6210\u7ee9\u5927\u4e8e60 \u53ca \u5e73\u5747\u503c\u5927\u4e8e80\u7684\u6570\u636e*\/\r\nuse xs\r\ngo\r\ncreate view \u4f18\u79c0\u5b66\u751f_VIEW\r\nas\r\nSELECT xsda.\u5b66\u53f7,\u59d3\u540d,avg(\u6210\u7ee9) as \u5e73\u5747\u6210\u7ee9\r\nFROM xsda join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7\r\nwhere \u6210\u7ee9&gt;60\r\ngroup by xsda.\u5b66\u53f7,\u59d3\u540d\r\nhaving avg(\u6210\u7ee9)&gt;80\r\n\r\n\/*\u521b\u5efa\u89c6\u56fe\uff0c\u67e5\u8be2XSCJ_VIEW\u89c6\u56fe\u7684\u8bfe\u7a0b\u540d\u79f0,\u6210\u7ee9\u7684\u6700\u5927\u503c*\/\r\nuse xs\r\ngo\r\ncreate view MAX_VIEW\r\nas\r\nselect \u8bfe\u7a0b\u540d\u79f0,MAX(XSCJ_VIEW.\u6210\u7ee9) as \u6700\u9ad8\u5206\r\nfrom XSCJ_VIEW\r\ngroup by \u8bfe\u7a0b\u540d\u79f0\r\n\r\n\/*\u4fee\u6539\u4f18\u79c0\u5b66\u751f_VIEW\u89c6\u56fe\uff0c\u4ecexscj,xsda\u8868\u4e2d\u67e5\u8be2\u6210\u7ee9\u5927\u4e8e75 \u5e73\u5747\u5927\u4e8e80\u7684\u6570\u636e*\/\r\nuse xs\r\ngo\r\nalter view \u4f18\u79c0\u5b66\u751f_VIEW\r\nas\r\nselect xscj.\u5b66\u53f7,xsda.\u59d3\u540d,avg(\u6210\u7ee9) as \u5e73\u5747\u6210\u7ee9\r\nfrom xscj,xsda\r\nwhere \u6210\u7ee9&gt;75\r\ngroup by xscj.\u5b66\u53f7,\u59d3\u540d\r\nhaving avg(\u6210\u7ee9)&gt;80\r\n\r\n\/*\u4fe1\u606f\u7cfb_VIEW\u89c6\u56fe\u4e2d\u63d2\u5165\u4e00\u6761\u6570\u636e*\/\r\nuse xs\r\ngo\r\ninsert into \u4fe1\u606f\u7cfb_VIEW\r\nvalues('200700','\u9ad8\u5f3a','1','\u4fe1\u606f','1988-10-20','\u82d7',50,null)values('200700','\u9ad8\u5f3a','\u7537','\u4fe1\u606f','1988-10-20','\u6c49',50,null)\r\n\r\n\/*\u4fee\u6539\u4fe1\u606f\u7cfb_VIEW\u89c6\u56fe\u7684\u5907\u6ce8\u4e3a\u5bf9\u65e5\u5916\u5305*\/\r\nuse xs\r\ngo\r\nupdate \u4fe1\u606f\u7cfb_VIEW\r\nset \u5907\u6ce8='\u5bf9\u65e5\u5916\u5305'\r\n\r\n\/*\u5220\u9664\u89c6\u56fe*\/\r\nuse xs\r\ngo\r\ndrop view MAX_VIEW<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u521b\u5efaxsxx\u5e76\u521b\u5efacheck\u7ea6\u675f*\/\r\nuse xs\r\ncreate table xsxx\r\n(\r\n\u5b66\u53f7 char(6),\r\n\u59d3\u540d char(8),\r\n\u6027\u522b char(2) check (\u6027\u522b='\u7537' or \u6027\u522b='\u5973'),\r\n\u5165\u5b66\u65e5\u671f datetime\r\n)\r\ngo\r\n\/*\u4fee\u6539xscj\u8868\uff0c\u589e\u52a0\u6210\u7ee9\u5b57\u6bb5\u7684check\u7ea6\u675f*\/\r\nuse xs\r\nalter table xscj\r\nadd constraint ck_cj check (\u6210\u7ee9&gt;=0 and \u6210\u7ee9&lt;=100)\r\ngo\r\n\/*\u5220\u9664xscj\u8868\u7684ck_cj\u7ea6\u675f*\/\r\nalter table xscj\r\ndrop constraint ck_cj\r\n\/*\u5b9a\u4e49\u4e00\u4e2a\u89c4\u5219\uff0c\u7528\u9650\u5236\u6570\u636e\u8f93\u5165\u6a21\u5f0f\uff0c\u6bd4\u5982kcxx\u8868\u7684\u8bfe\u7a0b\u7f16\u53f7\u5217\uff0c\u5982\u679c\u89c4\u5b9a\u8bfe\u7a0b\u7f16\u53f7\u7684\u7b2c\u4e00\u4f4d\u4ee3\u8868\u5f00\u8bfe\u5b66\u671f(\u53ea\u80fd\u8f93\u51651~6),\u540e 2 \u4f4d\u4ee3\u8868\u8bfe\u7a0b\u7f16\u53f7\uff08\u53ea\u80fd\u8f93\u51650~9\uff0c\u5e76\u7ed1\u5b9a\u5230kcxx\u8868\u7684\u8bfe\u7a0b\u7f16\u53f7*\/\r\nuse xs\r\ngo\r\ncreate rule f_rule as @range like '[1-6][0-9][0-9]'\r\ngo\r\nuse xs\r\nexec sp_bindrule 'f_rule','kcxx.\u8bfe\u7a0b\u7f16\u53f7'\r\ngo\r\n\/*\u5b9a\u4e49\u4e00\u4e2a\u7528\u6237\u6570\u636e\u7c7b\u578b\uff0c\u7136\u540e\u628a\u89c4\u5219\"f_rule\"\u7ed1\u5b9a\u5230\u7528\u6237\u6570\u636e\u7c7b\u578b\u7684chourse_num\u4e0a\uff0c\u6700\u540e\u521b\u5efakcxx1\u8868,\u8bfe\u7a0b\u7f16\u53f7\u6570\u636e\u7c7b\u578b\u4e3achourse_num*\/\r\nuse xs\r\ngo\r\nexec sp_addtype 'course_num','char(3)','NOT NUll'\r\nexec sp_bindrule 'f_rule','chourse_num'\r\ngo\r\ncreate table kcxx1\r\n(\r\n\u8bfe\u7a0b\u7f16\u53f7 course_num,\r\n\u8bfe\u7a0b\u540d\u79f0 char(16) not null,\r\n\u5b66\u5206 tinyint\r\n)\r\ngo\r\n\/*\u89e3\u9664\u8bfe\u7a0b\u7f16\u53f7\u5217\u4e0e\u89c4\u5219f_rule\u4e4b\u95f4\u7684\u7ed1\u5b9a\u5173\u7cfb*\/\r\nuse xs\r\nif exists(\r\nselect name\r\nfrom sysobjects\r\nwhere name='f_rule' and type='R'\r\n)\r\nbegin\r\nexec sp_unbindrule 'kcxx.\u8bfe\u7a0b\u7f16\u53f7'\r\nend\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5b9a\u4e49\u7528\u6237\u6570\u636e\u7c7b\u578b sex*\/\r\nuse xs\r\nexec sp_addtype sex,'char(2)','null'\r\ngo\r\n\/*\u5b9a\u4e49\u9ed8\u8ba4\u503c\u5bf9\u8c61 xb_default*\/\r\ncreate default xb_default as '\u7537'\r\ngo\r\n\/*\u5c06\u9ed8\u8ba4\u503c\u5bf9\u8c61 xb_default \u7ed1\u5b9a\u5230 sex \u6570\u636e\u7c7b\u578b*\/\r\nuse xs\r\nexec sp_bindefault 'xb_default','sex'\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u89e3\u9664\u9ed8\u8ba4\u503c\u5bf9\u8c61 xb_default \u4e0e\u7528\u6237\u5b9a\u4e49\u6570\u636e\u7c7b\u578b sex \u7684\u7ed1\u5b9a\u5173\u7cfb\uff0c\u7136\u540e\u5220\u9664 xb_default \u7684\u9ed8\u8ba4\u503c\u5bf9\u8c61*\/\r\nuse xs\r\nif exists(\r\nselect name\r\nfrom sysobjects\r\nwhere name='xb_default' and type='D'\r\n)\r\nbegin\r\nexec sp_unbindefault 'sex'\r\ndrop default xb_default\r\nend\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u521b\u5efa\u8868BOOK\u8868\u4e2d\u5305\u62ec\u4e66\u540d\u3001\u4e66\u53f7\u3001\u7c7b\u578b\u3001\u4ef7\u683c\uff0c\u5e76\u521b\u5efa\u5b57\u6bb5\u5b9a\u4e49\u540d\u4e3a min_time \u7684check\u7ea6\u675f\uff0c\u4f7f \u5165\u5e93\u65f6\u95f4\u57282000-1-1\u4e4b\u540e*\/\r\nuse xs\r\nexec sp_addtype min_time,'datetime','null'\r\ngo\r\ncreate table book\r\n(\r\n\u4e66\u540d char(10) not null,\r\n\u4e66\u53f7 char(6) not null,\r\n\u7c7b\u578b char(10) not null,\r\n\u4ef7\u683c money,\r\n\u5165\u5e93\u65f6\u95f4 datetime constraint min_time check(\u5165\u5e93\u65f6\u95f4&gt;2000-1-1)\r\n)\r\n\r\n\/*\u521b\u5efa\u4e00\u4e2a\u540d\u4e3a num_rule \u7684\u89c4\u5219\uff0c\u5e76\u7ed1\u5b9a\u5230book\u8868\u7684\u4e66\u53f7\u5b57\u6bb5\u4e2d,\u4ee5\u9650\u5236\u4e66\u53f7\u5b57\u6bb5\u75316\u4f4d\u5b57\u7b26\u7ec4\u6210,\u524d\u4e24\u4f4d\u4e3a\u5927\u5199A~Z\u4e4b\u95f4\u7684\u5b57\u6bcd\u7ec4\u6210,\u540e\u56db\u4f4d\u75310~9\u4e4b\u95f4\u7684\u6570\u5b57\u7ec4\u6210*\/\r\n\/*\u65b9\u6cd5\u4e00*\/\r\nuse xs\r\ngo\r\ncreate rule num_rule as @range like '[a-zA-Z][a-zA-Z][0-9][0-9][0-9][0-9]'\r\ngo\r\nuse xs\r\nexec sp_bindrule 'num_rule','book.\u4e66\u53f7'\r\ngo\r\n\/*\u65b9\u6cd5\u4e8c*\/\r\nuse xs\r\ngo\r\ncreate rule num_rule as @range like 'AZ[0-9][0-9][0-9][0-9]'\r\ngo\r\nuse xs\r\nexec sp_bindrule 'num_rule','book.\u4e66\u53f7'\r\ngo\r\n\r\n\/*\u5220\u9664\u7b2c\u4e00\u4e2a\u548c\u7b2c\u4e8c\u4e2a\u7684\u7ea6\u675f\u548c\u89c4\u5219*\/\r\nuse xs\r\nif exists(\r\nselect name\r\nfrom sysobjects\r\nwhere name='num_rule' and type='R'\r\n)\r\nbegin\r\nexec sp_unbindrule 'book.\u4e66\u53f7'\r\ndrop rule num_rule\r\nend\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u521b\u5efa\u8868xsda2,\u5bf9\u5b66\u53f7\u521b\u5efaPRIMARY KEY\u7ea6\u675f*\/\r\nuse xs\r\ngo\r\ncreate table xsda2\r\n(\r\n\u5b66\u53f7 char(6) not null constraint xh_pk primary key,\r\n\u6027\u522b char(2) not null,\r\n\u7cfb\u540d char(10) not null,\r\n\u51fa\u751f\u65e5\u671f smalldatetime not null,\r\n\u6c11\u65cf char(4) not null\r\n)\r\ngo\r\n\r\n\/*\u7ed9kcxx\u8868\u7684\u8bfe\u7a0b\u7f16\u53f7\u521b\u5efaPRIMARY KEY\u7ea6\u675f*\/\r\nuse xs\r\ngo\r\nalter table kcxx\r\nadd constraint kcbg_pk primary key clustered (\u8bfe\u7a0b\u7f16\u53f7)\r\ngo\r\n\r\n\/*\u7ed9book\u8868\u7684\u4e66\u540d\u521b\u5efaUNIQUE \u7ea6\u675f*\/\r\nuse xs\r\ngo\r\nalter table book\r\nadd constraint book_uk unique nonclustered (\u4e66\u540d)\r\ngo\r\n\/*\u5220\u9664KCXX\u7684kcbg_pk\u952e*\/\r\nuse xs\r\ngo\r\nalter table kcxx\r\ndrop constraint kcbg_pk\r\ngo\r\n\r\n\/*\u521b\u5efaxsda3\u8868\uff0c\u5bf9\u8eab\u4efd\u8bc1\u53f7\u7801UNIQUE\u7ea6\u675f*\/\r\nuse xs\r\ngo\r\ncreate table xsda3\r\n(\r\n\u5b66\u53f7 char(6) not null constraint xh1_pk primary key,\r\n\u59d3\u540d char(5) not null,\r\n\u6027\u522b char(2) not null,\r\n\u8eab\u4efd\u8bc1\u53f7\u7801 char(18) constraint sfzhm_uk unique,\r\n\u7cfb\u540d char(10) not null,\r\n\u51fa\u751f\u65e5\u671f smalldatetime not null,\r\n\u6c11\u65cf char(4) not null\r\n)\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5b9a\u4e49\u4e3b\u952e*\/\r\nuse xs\r\ncreate table xsda4\r\n(\r\n\u5b66\u53f7 char(6) not null constraint xh_pk primary key,\r\n\u59d3\u540d char (8) not null,\r\n\u6027\u522b char(2) not null,\r\n\u7cfb\u540d char(10) not null,\r\n\u51fa\u751f\u65e5\u671f smalldatetime not null,\r\n\u6c11\u65cf char(4) not null,\r\n\u603b\u5b66\u5206 tinyint null,\r\n\u5907\u6ce8 text null,\r\n)\r\ngo\r\n\/*\u5b9a\u4e49\u5916\u952e*\/\r\nuse xs\r\ncreate table xscj4\r\n(\r\n\u5b66\u53f7 char(6) not null foreign key references xsda4(\u5b66\u53f7) on update cascade,\r\n\u8bfe\u7a0b\u7f16\u53f7 char(3) not null,\r\n\u6210\u7ee9 tinyint\r\n)\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u7ed9book\u7684\u7c7b\u578b\u8bbe\u7f6e\u4e00\u4e2a\u9ed8\u8ba4\u503c\u7ea6\u675f\uff0c\u9ed8\u8ba4\u503c\u7ea6\u675f\u540d\u4e3abooktype\uff0c\u9ed8\u8ba4\u503c\u4e3aNEW BOOK*\/\r\nuse xs\r\nalter table book\r\nadd constraint booktype default 'NEW BOOK' for \u7c7b\u578b\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5220\u9664book\u8868\u4e2d\u7684\u7ea6\u675f*\/\r\nuse xs\r\nalter table book\r\ndrop constraint book_pk\r\ngo\r\nuse xs\r\nalter table book\r\ndrop constraint book_uk\r\ngo\r\nuse xs\r\nalter table book\r\ndrop constraint booktype\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\u5b9a\u4e49\u7528\u6237\u6570\u636e\u7c7b\u578b today : smalldatetime , not null \uff0c\u5b9a\u4e49\u9ed8\u8ba4\u503c\u5bf9\u8c61 day,\u53d6\u503c\u4e3agetdate()\uff0c\u5c06\u9ed8\u8ba4\u503c\u5bf9\u8c61day\u7ed1\u5b9a\u5230\u7528\u6237\u5b9a\u4e49\u6570\u636e\u7c7b\u578btoday\u4e0a*\/\r\nuse xs\r\nexec sp_addtype today,'smalldatetime','not null'\r\ngo\r\ncreate default day as 'getdate()'\r\ngo \r\nuse xs\r\nexec sp_bindefault 'day','today'\r\ngo<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">-----------------T-SQL\u8bed\u8a00\u7f16\u7a0b-\u5b66\u4e60\u8bb0\u5f55-----------------<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">\/*\r\n*declare @test varchar(10) \/\/\u5b9a\u4e49 \u53d8\u91cf \u6570\u636e\u7c7b\u578b\r\n*@@test \/\/\u5168\u5c40\u53d8\u91cf\r\n*@text \/\/\u5c40\u90e8\u53d8\u91cf\r\n*set @test = '\u6d4b\u8bd5'  \/\/\u8d4b\u503c\r\n*select @\u53d8\u91cf \/\/\u8f93\u51fa\r\n*\/\r\n\r\n\r\n\/*\u521b\u5efa3\u4e2a\u5c40\u90e8\u53d8\u91cf\uff0c\u5e76\u8f93\u51fa*\/\r\ndeclare @test varchar(10),@test2 varchar(10),@test3 varchar(12)\r\nset @test='\u8fd9\u662f'\r\nset @test2='\u6570\u636e\u5e93'\r\nset @test3='serever 2012'\r\nselect @test+'\u4e00\u4e2a'+@test2+'\u7248\u672c\u4e3a'+@test3\r\n\r\n\/*\u521b\u5efa\u4e00\u4e2a\u540d\u4e3axm\u7684\u5c40\u90e8\u53d8\u91cf\uff0c\u5e76\u5728select\u4e2d\u4f7f\u7528\u8be5\u53d8\u91cf\u67e5\u627e\u8868xsda\u4e2d\u7684\u6240\u6709\u7ba1\u7406\u7cfb\u5b66\u751f\u59d3\u540d\u3001\u603b\u5b66\u5206*\/\r\nuse xs\r\ndeclare @xm char(10)\r\nset @xm='\u7ba1\u7406'\r\nselect \u59d3\u540d,\u603b\u5b66\u5206\r\nfrom xsda\r\nwhere \u7cfb\u540d=@xm\r\ngo\r\n\r\n\/*\u5224\u65ad\u6210\u7ee9\uff0c\u5c0f\u4e8e0\u9519\u8bef,0-59\u4e0d\u5408\u683c,60-80\u5408\u683c,80-90\u826f\u597d,90-100\u4f18\u79c0*\/\r\ndeclare @t1 char(3),@t2 varchar(10),@t3 varchar(10),@t4 varchar(10),@t5 varchar(10),@t6 varchar(10)\r\nselect @t1=59,@t2='\u5408\u683c',@t3='\u4e0d\u53ca\u683c',@t4='\u826f\u597d',@t5='\u4f18\u79c0',@t6='\u9519\u8bef'\r\nif @t1&lt;0\r\n print @t6\r\nelse if @t1&gt;=0 and @t1&lt;=59\r\n print @t3\r\nelse if @t1&gt;=60 and @t1&lt;=80\r\n print @t2\r\nelse if @t1&gt;=80 and @t1&lt;=90\r\n print @t4\r\nelse if @t1&gt;=90 and @t1&lt;=100\r\n print @t5\r\nelse if @t1&gt;100\r\n\r\n\/*\u5224\u65ad\u59d3\u540d\u4e3a\u738b\u7ea2\u7684\u6210\u7ee9\uff0c\u5927\u4e8e90\u4e3a\u5e73\u5747\u6210\u7ee9\u4f18\u79c0,\u5c0f\u4e8e90\u4e3a\u5e73\u5747\u6210\u7ee9\u975e\u4f18\u79c0*\/\r\nbegin\r\ndeclare @t1 int,@t2 varchar(20),@t3 varchar(20)\r\nselect @t1=(select avg(\u6210\u7ee9) from xsda inner join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7 where xsda.\u59d3\u540d='\u738b\u7ea2'),@t2='\u5e73\u5747\u6210\u7ee9\u4f18\u79c0',@t3='\u5e73\u5747\u6210\u7ee9\u975e\u4f18\u79c0'\r\nif (select avg(\u6210\u7ee9) from xsda inner join xscj on xsda.\u5b66\u53f7=xscj.\u5b66\u53f7 where xsda.\u59d3\u540d='\u738b\u7ea2')&gt;90\r\n print @t2\r\nelse\r\n print @t3\r\nend\r\n print @t6\r\n\r\n\/*\u7f16\u5199\u5faa\u73af\u8bed\u53e51+2+3*\/\r\ndeclare @i int,@t int\r\nset @t=0\r\nset @i=1\r\nwhile @i&lt;=100\r\nbegin\r\nset @t=@t+@i\r\nset @i=@i+1\r\nprint str(@t)\r\nend\r\nprint '100!='+str(@t)<\/code><\/pre>\n<pre class=\"pure-highlightjs\"><code class=\"\">--\u521b\u5efa\u4e00\u4e2a\u5185\u8054\u8868\u503c\u51fd\u6570CourseScore\uff0c\u529f\u80fd\u662f\u6839\u636e\u8bfe\u7a0b\u7f16\u53f7\u5217\u51fa\u67d0\u95e8\u8bfe\u7a0b\u7684\u5b66\u751f\u6210\u7ee9\uff0c\u5305\u62ec\u8bfe\u7a0b\u7f16\u53f7\u3001\u5b66\u751f\u7f16\u53f7\u3001\u8bfe\u7a0b\u6210\u7ee9\r\ncreate function CourseScore(@num char(6))\r\nreturns table\r\nas\r\nreturn(\r\nselect \u8bfe\u7a0b\u7f16\u53f7,\u5b66\u53f7,\u6210\u7ee9\r\nfrom xs.dbo.xscj\r\nwhere \u8bfe\u7a0b\u7f16\u53f7=@num\r\n)\r\n--\u8868\u503c\u51fd\u6570\u8c03\u7528\r\nselect *\r\nfrom CourseScore(104)\r\ngo\r\n\r\n\r\n--\u5728xs\u6570\u636e\u5e93\u4e2d\uff0c\u521b\u5efa\u4e00\u4e2a\u6807\u91cf\u503c\u51fd\u6570\uff1aMaxCourseScore\uff0c\u529f\u80fd\u662f\u6c42\u51fa\u67d0\u95e8\u8bfe\u7a0b\u7684\u6700\u9ad8\u5206\u3002\r\ncreate function MaxCourseScore(@num char(6))\r\nreturns int\r\nas\r\nbegin\r\ndeclare @aver int\r\nselect @aver=max(\u6210\u7ee9)\r\nfrom xs.dbo.xscj\r\nwhere \u8bfe\u7a0b\u7f16\u53f7=@num\r\nreturn @aver\r\nend\r\ngo\r\n--\u6807\u91cf\u503c\u51fd\u6570\u8c03\u7528\r\nselect dbo.MaxCourseScore(104)\r\n\r\n\r\n--\u521b\u5efa\u4e00\u4e2a\u5185\u8054\u8868\u503c\u51fd\u6570MaxScore\uff0c\u529f\u80fd\u662f\u6839\u636e\u8bfe\u7a0b\u7f16\u53f7\u5217\u51fa\u8bfe\u7a0b\u540d\u79f0\u548c\u8be5\u8bfe\u7a0b\u7684\u6700\u9ad8\u5206\u3002\r\ncreate function MaxScore(@num char(6))\r\nreturns table\r\nas\r\nreturn(\r\nselect xscj.\u8bfe\u7a0b\u7f16\u53f7,\u8bfe\u7a0b\u540d\u79f0,max(\u6210\u7ee9) as '\u6700\u9ad8\u5206'\r\nfrom xscj join kcxx on xscj.\u8bfe\u7a0b\u7f16\u53f7=kcxx.\u8bfe\u7a0b\u7f16\u53f7\r\nwhere xscj.\u8bfe\u7a0b\u7f16\u53f7=@num\r\ngroup by xscj.\u8bfe\u7a0b\u7f16\u53f7,\u8bfe\u7a0b\u540d\u79f0\r\n)\r\n--\u8868\u503c\u51fd\u6570\u8c03\u7528\r\nselect *\r\nfrom MaxScore(104)\r\ngo<\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u6570\u636e\u5e93\u6587\u4ef6\uff1a<a href=\"http:\/\/xz.nicokun.com:64599\/n3UGo3wCfF690Ug1hFb8vpiJ0lUGlTte.rar\">\u70b9\u51fb\u4e0b\u8f7d<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u4e3b\u952e\u7ea6\u675f\uff08primary key\uff09\uff1a\u4e00\u4e2a\u8868\u4e2d\u552f\u4e00\u5177\u6709\u6807\u8bc6\u6027\u7684\u5b57\u6bb5\uff0c\u4e00\u822c\u4e00\u4e2a\u8868\u4e2d\u53ea\u80fd\u6709\u4e00\u4e2a\u4e3b\u952e\u3002\u8bbe\u7f6e\u4e86\u4e3b\u952e\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[37,38],"class_list":["post-124","post","type-post","status-publish","format-standard","hentry","category-home","tag-sql","tag-38"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL\u5b66\u4e60\u7b14\u8bb0 - ByXiaoXie<\/title>\n<meta name=\"description\" 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- ByXiaoXie\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.byxiaoxie.com\\\/#website\"},\"datePublished\":\"2017-10-11T00:47:50+00:00\",\"dateModified\":\"2018-01-16T17:15:27+00:00\",\"description\":\"ByXiaoXie - SQL\u5b66\u4e60\u7b14\u8bb0\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.byxiaoxie.com\\\/?p=124#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.byxiaoxie.com\\\/?p=124\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.byxiaoxie.com\\\/?p=124#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\\\/\\\/www.byxiaoxie.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"SQL\u5b66\u4e60\u7b14\u8bb0\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.byxiaoxie.com\\\/#website\",\"url\":\"https:\\\/\\\/www.byxiaoxie.com\\\/\",\"name\":\"ByXiaoXie\",\"description\":\"Gary \u4e2a\u4eba\u535a\u5ba2 \u6280\u672f\u5206\u4eab 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