{"id":107363,"date":"2026-09-19T13:02:56","date_gmt":"2026-09-19T05:02:56","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/107363.html"},"modified":"2026-09-19T13:02:56","modified_gmt":"2026-09-19T05:02:56","slug":"mysql%e5%9f%ba%e7%a1%80%e7%af%87%e4%b9%8b%e8%a7%86%e5%9b%be%e4%b8%8e%e7%94%a8%e6%88%b7%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/107363.html","title":{"rendered":"MySQL\u57fa\u7840\u7bc7\u4e4b\u89c6\u56fe\u4e0e\u7528\u6237\u7ba1\u7406"},"content":{"rendered":"<h3>\u00a0\u4e00\u3001\u89c6\u56fe&#xff08;View&#xff09;<\/h3>\n<h4>1.1 \u4ec0\u4e48\u662f\u89c6\u56fe<\/h4>\n<p>\u89c6\u56fe\u662f\u4e00\u79cd\u865a\u62df\u8868&#xff0c;\u5b83\u672c\u8eab\u4e0d\u5b58\u50a8\u6570\u636e&#xff0c;\u53ea\u5b58\u50a8\u4e00\u6761\u9884\u5b9a\u4e49\u7684 SELECT \u67e5\u8be2\u8bed\u53e5\u3002\u5f53\u4f60\u67e5\u8be2\u89c6\u56fe\u65f6&#xff0c;MySQL \u4f1a\u52a8\u6001\u6267\u884c\u8fd9\u6761 SELECT \u8bed\u53e5&#xff0c;\u628a\u7ed3\u679c\u5f53\u4f5c\u4e00\u5f20\u8868\u8fd4\u56de\u7ed9\u4f60\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;\u8fd9\u91cc\u7684&#034;\u89c6\u56fe&#034;\u548c\u4e8b\u52a1 MVCC \u4e2d\u7684&#034;ReadView&#xff08;\u8bfb\u89c6\u56fe&#xff09;&#034;\u5b8c\u5168\u662f\u4e24\u4e2a\u6982\u5ff5&#xff0c;\u6ca1\u6709\u4efb\u4f55\u5173\u7cfb\u3002<\/p>\n<ul>\n<li>\u672c\u7ae0\u7684\u89c6\u56fe&#xff08;View&#xff09;&#xff1a;\u6570\u636e\u5e93\u5bf9\u8c61&#xff0c;\u662f SELECT \u8bed\u53e5\u7684\u522b\u540d\/\u5c01\u88c5&#xff0c;\u662f\u6301\u4e45\u5316\u7684\u865a\u62df\u8868\u3002<\/li>\n<li>\u4e8b\u52a1\u4e2d\u7684 ReadView&#xff1a;\u5185\u5b58\u4e2d\u7684\u6570\u636e\u7ed3\u6784&#xff0c;\u7528\u4e8e MVCC \u5224\u65ad\u6570\u636e\u7248\u672c\u53ef\u89c1\u6027&#xff0c;\u4e8b\u52a1\u7ed3\u675f\u5c31\u9500\u6bc1\u3002<\/li>\n<\/ul>\n<h4>1.2 \u521b\u5efa\u89c6\u56fe<\/h4>\n<h5>\u8bed\u6cd5<\/h5>\n<p>CREATE VIEW \u89c6\u56fe\u540d AS SELECT\u8bed\u53e5;<\/p>\n<h5>\u793a\u4f8b<\/h5>\n<p>CREATE VIEW myview AS<br \/>\nSELECT EMP.ename, DEPT.deptno, DEPT.dname<br \/>\nFROM EMP<br \/>\nINNER JOIN DEPT ON EMP.deptno &#061; DEPT.deptno;<\/p>\n<p>\u521b\u5efa\u540e&#xff0c;myview \u5c31\u53ef\u4ee5\u50cf\u666e\u901a\u8868\u4e00\u6837\u67e5\u8be2&#xff1a;<\/p>\n<p>SELECT * FROM myview;<\/p>\n<p>\u8fd9\u7b49\u4ef7\u4e8e\u76f4\u63a5\u6267\u884c\u90a3\u6761\u590d\u6742\u7684\u591a\u8868\u8fde\u63a5\u67e5\u8be2\u3002<\/p>\n<h4>1.3 \u89c6\u56fe\u7684\u672c\u8d28&#xff1a;\u4e0d\u5b58\u6570\u636e&#xff0c;\u53ea\u5b58\u5b9a\u4e49<\/h4>\n<p>\u89c6\u56fe\u7684\u6838\u5fc3\u7279\u70b9\u662f\u53ea\u5b58\u50a8 SQL \u5b9a\u4e49&#xff0c;\u4e0d\u5b58\u50a8\u67e5\u8be2\u7ed3\u679c\u6570\u636e\u3002<\/p>\n<ul>\n<li>\u89c6\u56fe\u7684\u6570\u636e\u6765\u81ea\u57fa\u8868&#xff08;\u5e95\u5c42\u7684\u771f\u5b9e\u8868&#xff09;&#xff0c;\u662f\u67e5\u8be2\u65f6\u52a8\u6001\u8ba1\u7b97\u51fa\u6765\u7684&#xff1b;<\/li>\n<li>\u57fa\u8868\u6570\u636e\u53d8\u5316\u65f6&#xff0c;\u89c6\u56fe\u7684\u67e5\u8be2\u7ed3\u679c\u4e5f\u4f1a\u968f\u4e4b\u53d8\u5316&#xff1b;<\/li>\n<li>\u5bf9\u89c6\u56fe\u6267\u884c DML&#xff08;INSERT\/UPDATE\/DELETE&#xff09;&#xff0c;\u672c\u8d28\u4e0a\u662f\u5728\u4fee\u6539\u57fa\u8868\u7684\u6570\u636e\u2014\u2014\u56e0\u4e3a\u89c6\u56fe\u672c\u8eab\u6ca1\u6709\u6570\u636e\u53ef\u6539\u3002<\/li>\n<\/ul>\n<p>\u89c6\u56fe\u4e0d\u5b58\u50a8\u6570\u636e&#xff0c;\u5bf9\u89c6\u56fe\u7684\u4fee\u6539\u6700\u7ec8\u843d\u5230\u57fa\u8868\u4e0a&#xff1b;\u57fa\u8868\u53d8\u4e86&#xff0c;\u67e5\u8be2\u89c6\u56fe\u7684\u7ed3\u679c\u81ea\u7136\u4e5f\u53d8\u4e86\u3002 \u4f46\u4e0d\u662f\u6240\u6709\u89c6\u56fe\u90fd\u80fd\u4fee\u6539&#xff0c;\u89c1 1.5 \u8282\u3002<\/p>\n<h4>1.4 \u89c6\u56fe\u7684\u4f18\u70b9\u4e0e\u7528\u9014<\/h4>\n<table>\n<tr>\u4f18\u70b9\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>\u7b80\u5316\u590d\u6742\u67e5\u8be2<\/td>\n<td>\u628a\u591a\u8868\u8fde\u63a5\u3001\u5b50\u67e5\u8be2\u7b49\u590d\u6742 SQL \u5c01\u88c5\u6210\u89c6\u56fe&#xff0c;\u4f7f\u7528\u65f6\u53ea\u9700 SELECT * FROM \u89c6\u56fe\u540d<\/td>\n<\/tr>\n<tr>\n<td>\u6743\u9650\u63a7\u5236<\/td>\n<td>\u53ea\u7ed9\u7528\u6237\u5f00\u653e\u89c6\u56fe\u7684\u67e5\u8be2\u6743\u9650&#xff0c;\u4e0d\u5f00\u653e\u57fa\u8868&#xff0c;\u4ece\u800c\u9690\u85cf\u654f\u611f\u5b57\u6bb5&#xff08;\u6bd4\u5982\u5de5\u8d44\u3001\u8eab\u4efd\u8bc1\u53f7&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u72ec\u7acb\u6027<\/td>\n<td>\u57fa\u8868\u7ed3\u6784\u53d8\u5316\u65f6&#xff0c;\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u89c6\u56fe\u5b9a\u4e49\u4fdd\u6301\u4e0a\u5c42\u5e94\u7528\u4e0d\u53d8&#xff0c;\u5b9e\u73b0\u903b\u8f91\u6570\u636e\u72ec\u7acb\u6027<\/td>\n<\/tr>\n<tr>\n<td>\u903b\u8f91\u6e05\u6670<\/td>\n<td>\u7ed9\u590d\u6742\u67e5\u8be2\u8d77\u4e00\u4e2a\u6709\u610f\u4e49\u7684\u540d\u5b57&#xff0c;\u63d0\u5347 SQL \u53ef\u8bfb\u6027\u548c\u53ef\u7ef4\u62a4\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>1.5 \u53ef\u66f4\u65b0\u89c6\u56fe\u4e0e\u4e0d\u53ef\u66f4\u65b0\u89c6\u56fe<\/h4>\n<p>\u4e0d\u662f\u6240\u6709\u89c6\u56fe\u90fd\u80fd\u6267\u884c INSERT\/UPDATE\/DELETE\u3002<\/p>\n<h5>\u53ef\u66f4\u65b0\u89c6\u56fe\u5fc5\u987b\u540c\u65f6\u6ee1\u8db3<\/h5>\n<li>\u6ca1\u6709\u805a\u5408\u51fd\u6570&#xff08;SUM\u3001COUNT\u3001MAX\u3001MIN\u3001AVG \u7b49&#xff09;<\/li>\n<li>\u6ca1\u6709 DISTINCT<\/li>\n<li>\u6ca1\u6709 GROUP BY \/ HAVING<\/li>\n<li>\u6ca1\u6709 UNION \/ UNION ALL<\/li>\n<li>SELECT \u5217\u8868\u548c WHERE \u5b50\u53e5\u4e2d\u6ca1\u6709\u5b50\u67e5\u8be2<\/li>\n<li>\u57fa\u4e8e\u5355\u8868&#xff08;\u591a\u8868\u8fde\u63a5\u7684\u89c6\u56fe\u4e00\u822c\u4e0d\u53ef\u66f4\u65b0&#xff09;<\/li>\n<li>\u6ca1\u6709\u5f15\u7528\u5176\u4ed6\u4e0d\u53ef\u66f4\u65b0\u7684\u89c6\u56fe<\/li>\n<h5>\u793a\u4f8b<\/h5>\n<p>&#8212; \u53ef\u66f4\u65b0\u89c6\u56fe&#xff08;\u57fa\u4e8e\u5355\u8868&#xff0c;\u65e0\u805a\u5408&#xff09;<br \/>\nCREATE VIEW v_emp10 AS<br \/>\nSELECT empno, ename, sal FROM EMP WHERE deptno &#061; 10;<\/p>\n<p>&#8212; \u53ef\u4ee5\u4fee\u6539&#xff08;\u672c\u8d28\u4fee\u6539\u57fa\u8868&#xff09;<br \/>\nUPDATE v_emp10 SET sal &#061; sal &#043; 100 WHERE empno &#061; 7782;<\/p>\n<p>&#8212; \u4e0d\u53ef\u66f4\u65b0\u89c6\u56fe&#xff08;\u6709\u805a\u5408 &#043; GROUP BY&#xff09;<br \/>\nCREATE VIEW v_dept_avg AS<br \/>\nSELECT deptno, AVG(sal) AS avg_sal FROM EMP GROUP BY deptno;<br \/>\n&#8212; \u5bf9 v_dept_avg \u6267\u884c UPDATE \u4f1a\u62a5\u9519<\/p>\n<h4>1.6 \u89c6\u56fe\u7684\u5176\u4ed6\u64cd\u4f5c<\/h4>\n<p>&#8212; \u67e5\u770b\u6240\u6709\u89c6\u56fe&#xff08;\u89c6\u56fe\u4e5f\u662f\u8868&#xff0c;show tables \u80fd\u770b\u5230&#xff09;<br \/>\nSHOW TABLES;<\/p>\n<p>&#8212; \u67e5\u770b\u89c6\u56fe\u5b9a\u4e49<br \/>\nSHOW CREATE VIEW \u89c6\u56fe\u540d;<\/p>\n<p>&#8212; \u4fee\u6539\u89c6\u56fe\u5b9a\u4e49<br \/>\nCREATE OR REPLACE VIEW \u89c6\u56fe\u540d AS \u65b0\u7684SELECT\u8bed\u53e5;<br \/>\n&#8212; \u6216<br \/>\nALTER VIEW \u89c6\u56fe\u540d AS \u65b0\u7684SELECT\u8bed\u53e5;<\/p>\n<p>&#8212; \u5220\u9664\u89c6\u56fe<br \/>\nDROP VIEW \u89c6\u56fe\u540d;<\/p>\n<p>&#8212; \u540c\u65f6\u5220\u9664\u591a\u4e2a\u89c6\u56fe<br \/>\nDROP VIEW \u89c6\u56fe1, \u89c6\u56fe2;<\/p>\n<hr \/>\n<h3>\u4e8c\u3001\u7528\u6237\u7ba1\u7406<\/h3>\n<h4>2.1 \u7528\u6237\u6570\u636e\u5b58\u50a8\u5728\u54ea\u91cc<\/h4>\n<p>MySQL \u662f\u7f51\u7edc\u6570\u636e\u5e93\u670d\u52a1&#xff0c;\u767b\u5f55\u9700\u8981\u8d26\u53f7\u5bc6\u7801\u3002\u7528\u6237\u4fe1\u606f\u672c\u8eab\u4e5f\u662f\u6570\u636e&#xff0c;\u5b58\u50a8\u5728 MySQL \u81ea\u5e26\u7684\u7cfb\u7edf\u5e93 mysql \u4e2d\u3002<\/p>\n<p>&#8212; \u5207\u6362\u5230 mysql \u7cfb\u7edf\u5e93<br \/>\nUSE mysql;<\/p>\n<p>&#8212; \u67e5\u770b\u6240\u6709\u8868<br \/>\nSHOW TABLES;<\/p>\n<p>\u5176\u4e2d\u6700\u6838\u5fc3\u7684\u662f user \u8868&#xff0c;\u5b58\u50a8\u6240\u6709\u7528\u6237\u7684\u8d26\u53f7\u3001\u5bc6\u7801\u3001\u5168\u5c40\u6743\u9650\u7b49\u4fe1\u606f\u3002<\/p>\n<p>&#8212; \u67e5\u770b\u8868\u7ed3\u6784<br \/>\nDESC user;<\/p>\n<p>&#8212; \u67e5\u770b\u6240\u6709\u7528\u6237&#xff08;\u5782\u76f4\u663e\u793a\u66f4\u6e05\u6670&#xff09;<br \/>\nSELECT * FROM user \\\\G;<\/p>\n<h4>2.2 MySQL \u7528\u6237\u7684\u552f\u4e00\u6807\u8bc6&#xff1a;&#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;<\/h4>\n<p>MySQL \u7684\u7528\u6237\u4e0d\u662f\u53ea\u7531\u7528\u6237\u540d\u552f\u4e00\u6807\u8bc6&#xff0c;\u800c\u662f\u7531 &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a\u540d&#039; \u5171\u540c\u552f\u4e00\u6807\u8bc6\u3002<\/p>\n<p>&#039;root&#039;&#064;&#039;localhost&#039;    \u548c    &#039;root&#039;&#064;&#039;%&#039;    \u662f\u4e24\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u7528\u6237&#xff01;<\/p>\n<p>\u5b83\u4eec\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u5bc6\u7801\u3001\u4e0d\u540c\u7684\u6743\u9650\u3002\u767b\u5f55\u65f6&#xff0c;MySQL \u6839\u636e\u4f60\u8fde\u63a5\u7684\u6765\u6e90 IP&#xff0c;\u5728 user \u8868\u4e2d\u627e\u6700\u7cbe\u786e\u5339\u914d\u7684\u90a3\u4e00\u6761\u8bb0\u5f55&#xff08;host \u8d8a\u5177\u4f53\u4f18\u5148\u7ea7\u8d8a\u9ad8&#xff09;&#xff0c;\u800c\u4e0d\u662f\u6a21\u7cca\u5339\u914d\u3002<\/p>\n<h5>Host \u5b57\u6bb5\u7684\u5e38\u89c1\u5f62\u5f0f<\/h5>\n<table>\n<tr>Host \u503c\u542b\u4e49<\/tr>\n<tbody>\n<tr>\n<td>localhost<\/td>\n<td>\u4ec5\u5141\u8bb8\u672c\u5730\u8fde\u63a5&#xff08;Unix socket \u6216\u672c\u5730\u56de\u73af TCP&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>192.168.1.100<\/td>\n<td>\u4ec5\u5141\u8bb8\u6307\u5b9a\u7684\u5355\u4e2a IP \u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>192.168.1.%<\/td>\n<td>\u5141\u8bb8 192.168.1 \u7f51\u6bb5\u7684\u6240\u6709 IP \u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>%.example.com<\/td>\n<td>\u5141\u8bb8\u6307\u5b9a\u57df\u540d\u540e\u7f00\u7684\u4e3b\u673a\u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>%<\/td>\n<td>\u5141\u8bb8\u4efb\u610f IP \u8fde\u63a5&#xff08;\u6700\u5bbd\u677e&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>\u5173\u4e8e\u5185\u7f51\/\u516c\u7f51\u767b\u5f55\u7684\u6b63\u786e\u7406\u89e3<\/h5>\n<p>\u539f\u6587\u5173\u4e8e\u5185\u7f51 IP \u7684\u89e3\u91ca\u6709\u9519\u8bef&#xff0c;\u8fd9\u91cc\u4fee\u6b63&#xff1a;<\/p>\n<ul>\n<li>\u5982\u679c\u5ba2\u6237\u7aef\u548c MySQL \u670d\u52a1\u5668\u5728\u540c\u4e00\u4e2a\u5185\u7f51&#xff0c;\u5ba2\u6237\u7aef\u8fde\u63a5\u65f6 MySQL \u770b\u5230\u7684\u6765\u6e90 IP \u5c31\u662f\u5ba2\u6237\u7aef\u7684\u5185\u7f51 IP \u672c\u8eab&#xff08;\u4e0d\u7ecf\u8fc7\u516c\u7f51\u548c NAT&#xff09;\u3002\u6b64\u65f6\u53ef\u4ee5\u628a host \u7cbe\u786e\u8bbe\u4e3a\u5185\u7f51 IP \u6216\u7f51\u6bb5&#xff08;\u5982 &#039;192.168.1.%&#039;&#xff09;&#xff0c;\u4e0d\u9700\u8981\u8bbe\u4e3a %\u3002<\/li>\n<li>\u5982\u679c\u5ba2\u6237\u7aef\u8de8\u516c\u7f51\u8fde\u63a5 MySQL \u670d\u52a1\u5668&#xff0c;\u8bf7\u6c42\u7ecf\u8fc7\u8def\u7531\u5668 NAT \u540e&#xff0c;MySQL \u770b\u5230\u7684\u6765\u6e90 IP \u662f\u516c\u7f51 IP\u3002\u6b64\u65f6\u9700\u8981\u628a host \u8bbe\u4e3a\u5bf9\u5e94\u7684\u516c\u7f51 IP&#xff0c;\u6216\u8005\u8bbe\u4e3a %&#xff08;\u4efb\u610f IP&#xff09;\u3002<\/li>\n<li>% \u7684\u542b\u4e49\u662f&#034;\u4efb\u610f IP \u90fd\u80fd\u8fde\u63a5&#034;&#xff0c;\u548c\u5185\u7f51\/\u516c\u7f51\u65e0\u5173\u3002\u8bbe\u4e3a % \u610f\u5473\u7740\u5168\u7f51\u53ef\u8fbe&#xff0c;\u751f\u4ea7\u73af\u5883\u614e\u7528&#xff0c;\u5e94\u5c3d\u91cf\u7cbe\u786e\u9650\u5236\u6765\u6e90 IP\u3002<\/li>\n<\/ul>\n<h4>2.3 user \u8868\u6838\u5fc3\u5b57\u6bb5\u89e3\u8bfb<\/h4>\n<p>user \u8868\u6709\u51e0\u5341\u4e2a\u5b57\u6bb5&#xff0c;\u91cd\u70b9\u5173\u6ce8\u4ee5\u4e0b\u51e0\u7c7b&#xff1a;<\/p>\n<table>\n<tr>\u5b57\u6bb5\u542b\u4e49<\/tr>\n<tbody>\n<tr>\n<td>Host<\/td>\n<td>\u5141\u8bb8\u767b\u5f55\u7684\u4e3b\u673a\/IP&#xff08;\u89c1 2.2&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>User<\/td>\n<td>\u8d26\u53f7\u540d<\/td>\n<\/tr>\n<tr>\n<td>authentication_string<\/td>\n<td>\u5bc6\u7801\u7684\u54c8\u5e0c\u6458\u8981&#xff08;\u4e0d\u662f\u660e\u6587\u5bc6\u7801&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>plugin<\/td>\n<td>\u8ba4\u8bc1\u63d2\u4ef6\u3002MySQL 8.0 \u9ed8\u8ba4 caching_sha2_password&#xff0c;5.7 \u9ed8\u8ba4 mysql_native_password<\/td>\n<\/tr>\n<tr>\n<td>Select_priv\u3001Insert_priv\u3001Update_priv\u3001Delete_priv<\/td>\n<td>\u5168\u5c40\u7ea7\u522b\u7684\u589e\u5220\u6539\u67e5\u6743\u9650&#xff0c;Y \u8868\u793a\u62e5\u6709<\/td>\n<\/tr>\n<tr>\n<td>Create_priv\u3001Drop_priv\u3001Alter_priv\u3001Grant_priv<\/td>\n<td>\u5168\u5c40\u7ea7\u522b\u7684 DDL \u548c\u6388\u6743\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td>Super_priv<\/td>\n<td>\u8d85\u7ea7\u6743\u9650&#xff08;kill \u7ebf\u7a0b\u3001\u4fee\u6539\u5168\u5c40\u53d8\u91cf\u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>password_expired<\/td>\n<td>\u5bc6\u7801\u662f\u5426\u5df2\u8fc7\u671f&#xff08;Y\/N&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>password_last_changed<\/td>\n<td>\u5bc6\u7801\u6700\u540e\u4fee\u6539\u65f6\u95f4<\/td>\n<\/tr>\n<tr>\n<td>password_lifetime<\/td>\n<td>\u5bc6\u7801\u6709\u6548\u671f&#xff08;\u5929&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>account_locked<\/td>\n<td>\u8d26\u6237\u662f\u5426\u88ab\u9501\u5b9a&#xff08;Y \u8868\u793a\u9501\u5b9a&#xff0c;\u65e0\u6cd5\u767b\u5f55&#xff09;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5176\u4f59\u5b57\u6bb5\u5927\u591a\u662f\u5404\u7c7b\u5168\u5c40\u6743\u9650\u4f4d&#xff08;Y\/N&#xff09;\u3001SSL \u8fde\u63a5\u914d\u7f6e\u3001\u8d44\u6e90\u9650\u5236&#xff08;\u6bcf\u5c0f\u65f6\u6700\u5927\u67e5\u8be2\u6570\/\u8fde\u63a5\u6570\u7b49&#xff09;\u3002<\/p>\n<h4>2.4 \u521b\u5efa\u7528\u6237<\/h4>\n<h5>\u8bed\u6cd5<\/h5>\n<p>CREATE USER &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039; IDENTIFIED BY &#039;\u5bc6\u7801&#039;;<\/p>\n<h5>\u793a\u4f8b<\/h5>\n<p>&#8212; \u521b\u5efa\u4e00\u4e2a\u53ea\u80fd\u672c\u5730\u767b\u5f55\u7684\u7528\u6237<br \/>\nCREATE USER &#039;zhangsan&#039;&#064;&#039;localhost&#039; IDENTIFIED BY &#039;123456&#039;;<\/p>\n<p>&#8212; \u521b\u5efa\u4e00\u4e2a\u5141\u8bb8\u4efb\u610f IP \u767b\u5f55\u7684\u7528\u6237<br \/>\nCREATE USER &#039;lisi&#039;&#064;&#039;%&#039; IDENTIFIED BY &#039;123456&#039;;<\/p>\n<p>&#8212; \u521b\u5efa\u4e00\u4e2a\u5141\u8bb8\u6307\u5b9a\u7f51\u6bb5\u767b\u5f55\u7684\u7528\u6237<br \/>\nCREATE USER &#039;wangwu&#039;&#064;&#039;192.168.1.%&#039; IDENTIFIED BY &#039;123456&#039;;<\/p>\n<p>\u6ce8\u610f&#xff1a;MySQL 8.0 \u4e2d&#xff0c;CREATE USER \u521b\u5efa\u7684\u7528\u6237\u9ed8\u8ba4\u6ca1\u6709\u4efb\u4f55\u6743\u9650&#xff0c;\u53ea\u80fd\u767b\u5f55&#xff0c;\u8fde\u5e93\u90fd\u770b\u4e0d\u5230\u3002\u9700\u8981\u989d\u5916\u7528 GRANT \u6388\u6743\u3002<\/p>\n<h4>2.5 \u5220\u9664\u7528\u6237<\/h4>\n<h5>\u8bed\u6cd5<\/h5>\n<p>DROP USER &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;;<\/p>\n<h5>\u793a\u4f8b<\/h5>\n<p>DROP USER &#039;zhangsan&#039;&#064;&#039;localhost&#039;;<\/p>\n<p>\u6ce8\u610f&#xff1a;\u5fc5\u987b\u5199\u5b8c\u6574\u7684 &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;&#xff0c;\u56e0\u4e3a\u7528\u6237\u662f\u7531\u4e24\u8005\u5171\u540c\u6807\u8bc6\u7684\u3002<\/p>\n<h4>2.6 \u4fee\u6539\u5bc6\u7801<\/h4>\n<h5>MySQL 8.0 \u63a8\u8350\u5199\u6cd5&#xff08;\u6807\u51c6&#xff09;<\/h5>\n<p>&#8212; \u4fee\u6539\u6307\u5b9a\u7528\u6237\u5bc6\u7801<br \/>\nALTER USER &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039; IDENTIFIED BY &#039;\u65b0\u5bc6\u7801&#039;;<\/p>\n<p>&#8212; \u4fee\u6539\u5f53\u524d\u767b\u5f55\u7528\u6237\u81ea\u5df1\u7684\u5bc6\u7801<br \/>\nALTER USER CURRENT_USER() IDENTIFIED BY &#039;\u65b0\u5bc6\u7801&#039;;<\/p>\n<h5>\u4e5f\u53ef\u4ee5\u7528 SET PASSWORD<\/h5>\n<p>SET PASSWORD FOR &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039; &#061; &#039;\u65b0\u5bc6\u7801&#039;;<\/p>\n<h5>\u5df2\u7ecf\u5e9f\u5f03\u7684\u5199\u6cd5<\/h5>\n<p>&#8212; \u274c MySQL 8.0 \u4e2d\u5df2\u5e9f\u5f03\/\u79fb\u9664&#xff0c;\u4f1a\u62a5\u9519<br \/>\nSET PASSWORD FOR &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039; &#061; PASSWORD(&#039;\u65b0\u5bc6\u7801&#039;);<\/p>\n<p>PASSWORD() \u51fd\u6570\u5728 MySQL 8.0 \u4e2d\u5df2\u88ab\u79fb\u9664&#xff0c;8.0 \u4e2d\u76f4\u63a5\u5199\u660e\u6587\u5bc6\u7801\u5373\u53ef&#xff0c;MySQL \u4f1a\u81ea\u52a8\u7528\u8ba4\u8bc1\u63d2\u4ef6\u54c8\u5e0c\u540e\u5b58\u50a8\u3002<\/p>\n<h4>2.7 \u6743\u9650\u7ba1\u7406<\/h4>\n<h5>2.7.1 \u6743\u9650\u7684\u56db\u4e2a\u5c42\u7ea7<\/h5>\n<p>MySQL \u6743\u9650\u4ece\u7c97\u5230\u7ec6\u5206\u4e3a\u56db\u4e2a\u5c42\u7ea7&#xff1a;<\/p>\n<table>\n<tr>\u5c42\u7ea7\u8bed\u6cd5\u8303\u56f4\u4f5c\u7528\u8303\u56f4<\/tr>\n<tbody>\n<tr>\n<td>\u5168\u5c40\u6743\u9650<\/td>\n<td>*.*<\/td>\n<td>\u6240\u6709\u5e93\u7684\u6240\u6709\u8868<\/td>\n<\/tr>\n<tr>\n<td>\u6570\u636e\u5e93\u6743\u9650<\/td>\n<td>\u5e93\u540d.*<\/td>\n<td>\u6307\u5b9a\u5e93\u7684\u6240\u6709\u8868<\/td>\n<\/tr>\n<tr>\n<td>\u8868\u6743\u9650<\/td>\n<td>\u5e93\u540d.\u8868\u540d<\/td>\n<td>\u6307\u5b9a\u5e93\u7684\u6307\u5b9a\u8868<\/td>\n<\/tr>\n<tr>\n<td>\u5217\u6743\u9650<\/td>\n<td>\u5e93\u540d.\u8868\u540d(\u52171,\u52172)<\/td>\n<td>\u6307\u5b9a\u8868\u7684\u6307\u5b9a\u5217<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>2.7.2 \u5e38\u7528\u6743\u9650\u5217\u8868<\/h5>\n<table>\n<tr>\u6743\u9650\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>ALL PRIVILEGES \/ ALL<\/td>\n<td>\u9664 GRANT OPTION \u548c PROXY \u5916\u7684\u6240\u6709\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td>SELECT<\/td>\n<td>\u67e5\u8be2\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>INSERT<\/td>\n<td>\u63d2\u5165\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>UPDATE<\/td>\n<td>\u66f4\u65b0\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>DELETE<\/td>\n<td>\u5220\u9664\u6570\u636e<\/td>\n<\/tr>\n<tr>\n<td>CREATE<\/td>\n<td>\u521b\u5efa\u6570\u636e\u5e93\/\u8868<\/td>\n<\/tr>\n<tr>\n<td>DROP<\/td>\n<td>\u5220\u9664\u6570\u636e\u5e93\/\u8868<\/td>\n<\/tr>\n<tr>\n<td>ALTER<\/td>\n<td>\u4fee\u6539\u8868\u7ed3\u6784<\/td>\n<\/tr>\n<tr>\n<td>INDEX<\/td>\n<td>\u521b\u5efa\/\u5220\u9664\u7d22\u5f15<\/td>\n<\/tr>\n<tr>\n<td>CREATE VIEW<\/td>\n<td>\u521b\u5efa\u89c6\u56fe<\/td>\n<\/tr>\n<tr>\n<td>SHOW VIEW<\/td>\n<td>\u67e5\u770b\u89c6\u56fe\u5b9a\u4e49<\/td>\n<\/tr>\n<tr>\n<td>CREATE ROUTINE<\/td>\n<td>\u521b\u5efa\u5b58\u50a8\u8fc7\u7a0b\/\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>ALTER ROUTINE<\/td>\n<td>\u4fee\u6539\/\u5220\u9664\u5b58\u50a8\u8fc7\u7a0b\/\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>EXECUTE<\/td>\n<td>\u6267\u884c\u5b58\u50a8\u8fc7\u7a0b\/\u51fd\u6570<\/td>\n<\/tr>\n<tr>\n<td>CREATE USER<\/td>\n<td>\u521b\u5efa\/\u5220\u9664\/\u91cd\u547d\u540d\u7528\u6237<\/td>\n<\/tr>\n<tr>\n<td>CREATE TABLESPACE<\/td>\n<td>\u521b\u5efa\/\u5220\u9664\/\u4fee\u6539\u8868\u7a7a\u95f4<\/td>\n<\/tr>\n<tr>\n<td>SHOW DATABASES<\/td>\n<td>\u67e5\u770b\u6240\u6709\u6570\u636e\u5e93<\/td>\n<\/tr>\n<tr>\n<td>SUPER<\/td>\n<td>\u8d85\u7ea7\u6743\u9650&#xff08;kill \u7ebf\u7a0b\u3001\u4fee\u6539\u5168\u5c40\u53d8\u91cf\u3001\u5173\u95ed\u670d\u52a1\u5668\u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>GRANT OPTION<\/td>\n<td>\u5c06\u81ea\u5df1\u62e5\u6709\u7684\u6743\u9650\u518d\u6388\u4e88\u5176\u4ed6\u7528\u6237<\/td>\n<\/tr>\n<tr>\n<td>PROCESS<\/td>\n<td>\u67e5\u770b\u6240\u6709\u4f1a\u8bdd\u7ebf\u7a0b&#xff08;SHOW PROCESSLIST&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>RELOAD<\/td>\n<td>\u6267\u884c FLUSH \u64cd\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>SHUTDOWN<\/td>\n<td>\u5173\u95ed MySQL \u670d\u52a1\u5668<\/td>\n<\/tr>\n<tr>\n<td>FILE<\/td>\n<td>\u670d\u52a1\u5668\u4e3b\u673a\u6587\u4ef6\u8bfb\u5199&#xff08;LOAD DATA INFILE \u7b49&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>LOCK TABLES<\/td>\n<td>\u663e\u5f0f\u9501\u8868<\/td>\n<\/tr>\n<tr>\n<td>CREATE TEMPORARY TABLES<\/td>\n<td>\u521b\u5efa\u4e34\u65f6\u8868<\/td>\n<\/tr>\n<tr>\n<td>REPLICATION SLAVE<\/td>\n<td>\u4ece\u5e93\u590d\u5236\u6743\u9650<\/td>\n<\/tr>\n<tr>\n<td>REPLICATION CLIENT<\/td>\n<td>\u67e5\u8be2\u4e3b\u4ece\u72b6\u6001&#xff08;SHOW MASTER\/SLAVE STATUS&#xff09;<\/td>\n<\/tr>\n<tr>\n<td>EVENT<\/td>\n<td>\u521b\u5efa\/\u5220\u9664\/\u4fee\u6539\u4e8b\u4ef6\u8c03\u5ea6\u5668<\/td>\n<\/tr>\n<tr>\n<td>TRIGGER<\/td>\n<td>\u521b\u5efa\/\u5220\u9664\u89e6\u53d1\u5668<\/td>\n<\/tr>\n<tr>\n<td>REFERENCES<\/td>\n<td>\u521b\u5efa\u5916\u952e\u7ea6\u675f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>2.7.3 \u6388\u6743\u8bed\u6cd5&#xff08;GRANT&#xff09;<\/h5>\n<p>GRANT \u6743\u9650\u5217\u8868 ON \u5e93.\u5bf9\u8c61 TO &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;;<\/p>\n<h5>\u793a\u4f8b<\/h5>\n<h5>2.7.4 \u56de\u6536\u6743\u9650&#xff08;REVOKE&#xff09;<\/h5>\n<p>REVOKE \u6743\u9650\u5217\u8868 ON \u5e93.\u5bf9\u8c61 FROM &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;;<\/p>\n<h5>\u793a\u4f8b<\/h5>\n<p>&#8212; \u56de\u6536\u6307\u5b9a\u5e93\u7684\u5220\u9664\u6743\u9650<br \/>\nREVOKE DELETE ON company.* FROM &#039;zhangsan&#039;&#064;&#039;localhost&#039;;<\/p>\n<p>&#8212; \u56de\u6536\u6240\u6709\u6743\u9650&#xff08;\u4e0d\u542b GRANT OPTION&#xff09;<br \/>\nREVOKE ALL PRIVILEGES ON *.* FROM &#039;lisi&#039;&#064;&#039;%&#039;;<\/p>\n<p>&#8212; \u56de\u6536 GRANT OPTION \u6743\u9650<br \/>\nREVOKE GRANT OPTION ON *.* FROM &#039;wangwu&#039;&#064;&#039;%&#039;;<\/p>\n<h5>2.7.5 \u67e5\u770b\u7528\u6237\u6743\u9650<\/h5>\n<p>&#8212; \u67e5\u770b\u6307\u5b9a\u7528\u6237\u7684\u6743\u9650<br \/>\nSHOW GRANTS FOR &#039;\u7528\u6237\u540d&#039;&#064;&#039;\u4e3b\u673a&#039;;<\/p>\n<p>&#8212; \u67e5\u770b\u5f53\u524d\u767b\u5f55\u7528\u6237\u81ea\u5df1\u7684\u6743\u9650<br \/>\nSHOW GRANTS FOR CURRENT_USER();<\/p>\n<h4>2.8 FLUSH PRIVILEGES \u4ec0\u4e48\u65f6\u5019\u7528<\/h4>\n<p>FLUSH PRIVILEGES \u7684\u4f5c\u7528\u662f\u91cd\u65b0\u52a0\u8f7d mysql \u5e93\u4e2d\u7684\u6743\u9650\u8868\u5230\u5185\u5b58\u3002<\/p>\n<table>\n<tr>\u64cd\u4f5c\u65b9\u5f0f\u662f\u5426\u9700\u8981 FLUSH PRIVILEGES<\/tr>\n<tbody>\n<tr>\n<td>\u7528 CREATE USER \/ DROP USER \/ GRANT \/ REVOKE \/ ALTER USER \u7b49\u6807\u51c6\u8bed\u53e5\u7ba1\u7406\u7528\u6237<\/td>\n<td>\u274c \u4e0d\u9700\u8981&#xff0c;MySQL \u81ea\u52a8\u5237\u65b0\u6743\u9650\u7f13\u5b58<\/td>\n<\/tr>\n<tr>\n<td>\u76f4\u63a5\u7528 INSERT \/ UPDATE \/ DELETE \u624b\u52a8\u4fee\u6539 mysql.user \u7b49\u6743\u9650\u8868<\/td>\n<td>\u2705 \u5fc5\u987b\u6267\u884c FLUSH PRIVILEGES&#xff0c;\u5426\u5219\u4fee\u6539\u4e0d\u751f\u6548<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u751f\u4ea7\u73af\u5883\u63a8\u8350\u59cb\u7ec8\u4f7f\u7528\u6807\u51c6\u7684\u7528\u6237\u7ba1\u7406\u8bed\u53e5&#xff08;CREATE USER \/ GRANT \u7b49&#xff09;&#xff0c;\u4e0d\u8981\u76f4\u63a5\u4fee\u6539 mysql.user \u8868&#xff0c;\u907f\u514d\u6743\u9650\u4e0d\u4e00\u81f4\u3002<\/p>\n<h4>2.9 \u6269\u5c55&#xff1a;\u89d2\u8272&#xff08;Role&#xff09;\u2014\u2014 MySQL 8.0&#043;<\/h4>\n<p>MySQL 8.0 \u5f15\u5165\u4e86\u89d2\u8272&#xff08;Role&#xff09;\u673a\u5236&#xff0c;\u53ef\u4ee5\u628a\u4e00\u7ec4\u6743\u9650\u6253\u5305\u6210\u4e00\u4e2a\u89d2\u8272&#xff0c;\u518d\u628a\u89d2\u8272\u6388\u4e88\u7528\u6237&#xff0c;\u7b80\u5316\u6743\u9650\u7ba1\u7406\u3002<\/p>\n<p>&#8212; \u521b\u5efa\u89d2\u8272<br \/>\nCREATE ROLE &#039;app_developer&#039;, &#039;app_reader&#039;;<\/p>\n<p>&#8212; \u7ed9\u89d2\u8272\u6388\u6743<br \/>\nGRANT ALL PRIVILEGES ON app_db.* TO &#039;app_developer&#039;;<br \/>\nGRANT 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