{"id":3481,"date":"2018-12-04T18:31:10","date_gmt":"2018-12-04T10:31:10","guid":{"rendered":"http:\/\/www.xttblog.com\/?p=3481"},"modified":"2018-12-04T18:31:10","modified_gmt":"2018-12-04T10:31:10","slug":"%e8%af%b4%e8%af%b4%e6%89%a7%e8%a1%8c%e4%b8%80%e6%9d%a1-mysql-%e6%9f%a5%e8%af%a2%ef%bc%88select%ef%bc%89%e5%8f%91%e7%94%9f%e4%ba%86%e5%93%aa%e4%ba%9b%e4%ba%8b%e6%83%85%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.xttblog.com\/?p=3481","title":{"rendered":"\u8bf4\u8bf4\u6267\u884c\u4e00\u6761 MySQL \u67e5\u8be2\uff08select\uff09\u53d1\u751f\u4e86\u54ea\u4e9b\u4e8b\u60c5\uff1f"},"content":{"rendered":"<p>\n\t\u6bcf\u4e00\u4e2a\u770b\u4f3c\u6ca1\u6709\u7b80\u5355\u7684\u7cfb\u7edf\uff0c\u80cc\u540e\u90fd\u6709\u5f3a\u5927\u7684\u6280\u672f\u5728\u652f\u6491\u3002\u6bd4\u5982\uff0c\u6211\u4eec\u548b\u6dd8\u5b9d\u8d2d\u7269\uff0c\u4e70\u4e00\u4ef6\u5546\u54c1\u4f60\u53ea\u9700\u8981\u70b9\u70b9\u624b\u6307\u3002\u4f46\u662f\u80cc\u540e\u5374\u53d1\u751f\u4e86\u5f88\u591a\u8fd0\u7b97\uff0c\u636e\u8bf4\u4f60\u8d2d\u4e70\u4e00\u4ef6\u5546\u54c1\u4ea7\u751f\u7684\u80fd\u91cf\u53ef\u80fd\u591f\u7528\u6765\u716e\u719f\u4e00\u4e2a\u9e21\u86cb\u4e86\u3002\u90a3\u4e48\u8bf4\u5230 MySQL\uff0c\u4f60\u6267\u884c\u4e00\u6761 Select \u8bed\u53e5\uff0c\u80cc\u540e\u6700\u7ec8\u53d1\u751f\u4e86\u54ea\u4e9b\u4e8b\u60c5\u5462\uff1f\u4e14\u770b\u672c\u6587\u7ed9\u4f60\u89e3\u60d1\uff01\n<\/p>\n<pre class=\"brush:sql;\">\r\nselect * from xttblog;<\/pre>\n<p>\n\t\u4ece\u8868\u9762\u6765\u8bf4\uff0c\u4e00\u6761\u67e5\u8be2\u8bed\u53e5\u6211\u6267\u884c\u540e\u80af\u5b9a\u4f1a\u5224\u65ad\u8bed\u6cd5\u662f\u5426\u9519\u8bef\u5427\u3002\u5c31\u5982\u4e0a\u9762\u7684 SQL\uff0c\u5047\u5982\u6211\u5199\u7684\u4e00\u4e2a\u5173\u952e\u5b57\uff0c\u6216\u8005\u67d0\u4e2a\u7b26\u53f7\u4e0d\u5bf9\uff0c\u5b83\u80af\u5b9a\u4f1a\u62a5\u9519\u5427\u3002\u6240\u4ee5\u6267\u884c\u4e00\u6761 SQL \u8bed\u53e5\u540e\uff0cMySQL&nbsp;\u7684\u5e95\u5c42\u80af\u5b9a\u53c8\u4e00\u4e2a\u8bed\u6cd5\u89e3\u6790\u5668\uff0c\u6216\u8005\u8bf4\u662f\u8bed\u6cd5\u5206\u6790\u5668\u3002\n<\/p>\n<p>\n\t\u60f3\u5230\u8fd9\u91cc\uff0c\u8bf4\u660e\u4f60\u8ba4\u771f\u601d\u8003\u4e86\u3002\n<\/p>\n<p>\n\t\u90a3\u6211\u4eec\u5728\u60f3\u4e00\u60f3\uff0c\u6211\u4eec\u8981\u8fdb\u884c\u67e5\u8be2\u662f\u4e0d\u662f\u8981\u8fdb\u884c\u901a\u4fe1\u554a\u3002\u901a\u4fe1\u7684\u8bdd\uff0c\u662f\u4e0d\u662f\u5c31\u6709\u4e00\u4e2a\u4e13\u95e8\u7ba1\u7406\u901a\u4fe1\u7684\uff0c\u5305\u62ec\u8fde\u63a5\u7ba1\u7406\uff0c\u6570\u636e\u5305\u5904\u7406\u7b49\u3002\u4e13\u95e8\u5904\u7406\u5ba2\u6237\u7aef\u7684\u8bf7\u6c42\u3002\u5b9e\u9645\u4e0a\u8fd9\u662f\u9760 MySQL \u4e2d\u7684\u4e00\u4e2a\u8fde\u63a5\u5668\u6765\u7ba1\u7406\u7684\u3002\n<\/p>\n<p>\n\t\u7136\u540e\uff0c\u518d\u60f3\u60f3\u3002MySQL \u4f5c\u4e3a\u4e00\u4e2a\u6570\u636e\u5e93\uff0c\u80af\u5b9a\u5b58\u5728\u5927\u91cf\u7684\u5e76\u53d1\u8bf7\u6c42\uff0c\u5e76\u53d1\u67e5\u8be2\u5427\u3002\u90a3\u4e48\u6709\u6ca1\u6709\u7c7b\u4f3c\u9ad8\u53ef\u7528\u67b6\u6784\u4e2d\u7684\u4e00\u4e9b\u7f13\u5b58\u8bbe\u8ba1\u5462\uff1f\n<\/p>\n<p>\n\t\u6709\u4e86\u8fd9\u4e2a\u60f3\u6cd5\u4ee5\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u901a\u8fc7 SQL \u8bed\u53e5\u6765\u9a8c\u8bc1\u6211\u4eec\u7684\u60f3\u6cd5\u4e86\u3002\u9a8c\u8bc1\u8fc7\u7a0b\u5f88\u7b80\u5355\uff0c\u9996\u5148\u5199\u4e00\u4e2a\u7a0d\u5fae\u590d\u6742\u4e00\u70b9\u7684 SQL\uff0c\u7136\u540e\u5728\u6d77\u91cf\u6570\u636e\u91cc\u8fdb\u884c\u67e5\u8be2\u3002\u7b2c\u4e00\u6b21\u67e5\u8be2\u65f6\u95f4\u80af\u5b9a\u6bd4\u8f83\u4e45\uff0c\u5728\u63a5\u7740\u6267\u884c\u7b2c\u4e8c\u6b21\u67e5\u8be2\uff0c\u4f60\u4f1a\u53d1\u73b0\u7b2c\u4e8c\u6b21\u67e5\u8be2\u53d8\u5feb\u4e86\u3002\n<\/p>\n<p>\n\t\u8fd9\u662f\u4e0d\u662f\u5c31\u9a8c\u8bc1\u4e86\u6211\u4eec\u60f3\u6cd5\u3002\u5b9e\u9645\u4e0a MySQL \u91cc\u786e\u5b9e\u8bbe\u8ba1\u7684\u6709\u7f13\u5b58\uff0c\u6bcf\u6b21\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u62ff\u5ba2\u6237\u7aef\u53d1\u9001\u8fc7\u6765\u7684\u5b8c\u6574\u7684 sql \u8bed\u53e5\uff0c\u5982\u679c\u547d\u4e2d\u7f13\u5b58\uff0c\u5c31\u4f1a\u76f4\u63a5\u8fd4\u56de\u7ed3\u679c\uff0c\u4e0d\u9700\u8981\u5f80\u4e0b\u7ee7\u7eed\u8fdb\u884c\u4e86\u3002\n<\/p>\n<p>\n\t\u6211\u4eec\u63a5\u7740\u5728\u60f3\uff0c\u6211\u968f\u4fbf\u5199\u4e00\u6761 SQL \u8bed\u53e5\uff0c\u7136\u540e\u67e5\u8be2\u3002\u7136\u540e\u6211\u4eec\u770b explain \u6267\u884c\u8ba1\u5212\uff0c\u4f1a\u53d1\u73b0\u6709\u4e9b SQL \u5199\u7684\u5e76\u4e0d\u7406\u60f3\u3002\u6267\u884c\u8ba1\u5212\u4f1a\u5217\u51fa\u4e00\u4e9b\u7ed3\u679c\uff0c\u7136\u540e\u6211\u4eec\u5728\u8c03\u6574\u4f18\u5316 SQL\uff0c\u76f4\u5230\u8fbe\u5230\u6700\u4f18\u6548\u679c\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u8c01\u6765\u505a\u7684\u5462\uff1f\u5c31\u662f MySQL \u5e95\u5c42\u4e2d\u7684\u4f18\u5316\u5668\u6765\u505a\u7684\u3002\n<\/p>\n<p>\n\t\u5f53\u6240\u6709\u7684\u51c6\u5907\u5de5\u4f5c\u90fd\u5b8c\u6210\u540e\uff0cMySQL \u624d\u5f00\u59cb\u771f\u6b63\u7684\u67e5\u8be2\u64cd\u4f5c\u3002\u8fd9\u5c31\u662f\u6267\u884c\u5668\u8be5\u5e72\u7684\u4e8b\u60c5\u3002\u6267\u884c\u5668\u662f\u6700\u7ec8\u771f\u6b63\u6267\u884c\u67e5\u8be2\u7684\u6b65\u9aa4\uff0c\u5728\u7ecf\u5386\u4e86\u5206\u6790\uff0c\u4f18\u5316\u4e4b\u540e\uff0c\u6267\u884c\u5668\u4f1a\u4ee5\u6700\u9ad8\u6548\u7684\u8ba1\u5212\u53bb\u8fdb\u884c\u67e5\u8be2\u3002<br \/>\n\t\u6267\u884c\u5668\u7684\u7b2c\u4e00\u6b65\u662f\u5224\u65ad\u8be5\u7528\u6237\u662f\u5426\u6709\u67e5\u8be2\u8868\u7684\u6743\u9650\uff0c\u5982\u679c\u6ca1\u6709\u76f4\u63a5\u8fd4\u56de\u9519\u8bef\uff0c\u5982\u679c\u6709\u5c31\u4f1a\u6253\u5f00\u8868\u7ee7\u7eed\u6267\u884c\u3002\u6267\u884c\u5668\u5176\u5b9e\u662f\u8c03\u7528\u5bf9\u5e94\u8868\u7684\u5b58\u50a8\u5f15\u64ce\u6240\u63d0\u4f9b\u7684\u63a5\u53e3\u6765\u8fdb\u884c\u67e5\u8be2\u7684\u3002\n<\/p>\n<p>\n\t\u6240\u4ee5\uff0cMySQL \u4e2d\u7684\u5b58\u50a8\u5f15\u64ce\u4e5f\u662f\u5f88\u91cd\u8981\u7684\u4e00\u90e8\u5206\uff0c\u6700\u7ec8\u7684\u64cd\u4f5c\u90fd\u5728\u5b58\u50a8\u5f15\u64ce\u4e2d\u6267\u884c\u3002MySQL \u6709\u4e09\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u5b58\u50a8\u5f15\u64ce\uff0cMyISAM\uff0cInnoDB\uff0cMEMORY\u3002\n<\/p>\n<p>\n\tMyISAM 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alt=\"\u4e1a\u4f59\u8349\u516c\u4f17\u53f7\"\/><\/p><p>\u6700\u540e\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u4e2a\u4eba\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a\u4e1a\u4f59\u8349\uff08yyucao\uff09\uff01<b>\u53ef\u52a0\u4f5c\u8005\u5fae\u4fe1\u53f7\uff1a<font color=\"red\">xttblog2<\/font>\u3002\u5907\u6ce8\uff1a\u201c1\u201d\uff0c\u6dfb\u52a0\u535a\u4e3b\u5fae\u4fe1\u62c9\u4f60\u8fdb\u5fae\u4fe1\u7fa4\u3002\u5907\u6ce8\u9519\u8bef\u4e0d\u4f1a\u540c\u610f\u597d\u53cb\u7533\u8bf7\u3002<\/b>\u518d\u6b21\u611f\u8c22\u60a8\u7684\u5173\u6ce8\uff01\u540e\u7eed\u6709\u7cbe\u5f69\u5185\u5bb9\u4f1a\u7b2c\u4e00\u65f6\u95f4\u53d1\u7ed9\u60a8\uff01\u539f\u521b\u6587\u7ae0\u6295\u7a3f\u8bf7\u53d1\u9001\u81f3532009913@qq.com\u90ae\u7bb1\u3002\u5546\u52a1\u5408\u4f5c\u4e5f\u53ef\u6dfb\u52a0\u4f5c\u8005\u5fae\u4fe1\u8fdb\u884c\u8054\u7cfb\uff01<\/p><p>\u672c\u6587\u539f\u6587\u51fa\u5904\uff1a<a href=\"https:\/\/www.xttblog.com\">\u4e1a\u4f59\u8349<\/a>\uff1a &raquo; <a href=\"https:\/\/www.xttblog.com\/?p=3481\">\u8bf4\u8bf4\u6267\u884c\u4e00\u6761 MySQL \u67e5\u8be2\uff08select\uff09\u53d1\u751f\u4e86\u54ea\u4e9b\u4e8b\u60c5\uff1f<\/a><\/p><!-- <div class=\"bd-reward-stl\"><button id=\"bdRewardBtn\"><span><\/span><\/button><\/div> -->","protected":false},"excerpt":{"rendered":"<p>\u6bcf\u4e00\u4e2a\u770b\u4f3c\u6ca1\u6709\u7b80\u5355\u7684\u7cfb\u7edf\uff0c\u80cc\u540e\u90fd\u6709\u5f3a\u5927\u7684\u6280\u672f\u5728\u652f\u6491\u3002\u6bd4\u5982\uff0c\u6211\u4eec\u548b\u6dd8\u5b9d\u8d2d\u7269\uff0c\u4e70\u4e00\u4ef6\u5546\u54c1\u4f60\u53ea\u9700\u8981\u70b9\u70b9\u624b\u6307\u3002\u4f46\u662f\u80cc\u540e [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[1674,1777,1675,580,392],"class_list":["post-3481","post","type-post","status-publish","format-standard","hentry","category-sql","tag-innodb","tag-memory","tag-myisam","tag-mysql----dba","tag-mysql"],"_links":{"self":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3481","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3481"}],"version-history":[{"count":1,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3481\/revisions"}],"predecessor-version":[{"id":3482,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=\/wp\/v2\/posts\/3481\/revisions\/3482"}],"wp:attachment":[{"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xttblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}