{"id":217763,"date":"2023-12-22T23:51:27","date_gmt":"2023-12-22T15:51:27","guid":{"rendered":"https:\/\/www.idc.net\/help\/217763\/"},"modified":"2023-12-22T23:51:27","modified_gmt":"2023-12-22T15:51:27","slug":"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8where%e5%ad%90%e5%8f%a5%e5%9c%a8select%e8%af%ad%e5%8f%a5%e4%b8%ad%e8%bf%87%e6%bb%a4%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217763\/","title":{"rendered":"MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528WHERE\u5b50\u53e5\u5728SELECT\u8bed\u53e5\u4e2d\u8fc7\u6ee4\u884c"},"content":{"rendered":"<p><title id=\"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8where%e5%ad%90%e5%8f%a5%e5%9c%a8select%e8%af%ad%e5%8f%a5%e4%b8%ad%e8%bf%87%e6%bb%a4%e8%a1%8c-qCMfqZGcSD\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528WHERE\u5b50\u53e5\u5728SELECT\u8bed\u53e5\u4e2d\u8fc7\u6ee4\u884c<\/title><\/p>\n<h1 id=\"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8where%e5%ad%90%e5%8f%a5%e5%9c%a8select%e8%af%ad%e5%8f%a5%e4%b8%ad%e8%bf%87%e6%bb%a4%e8%a1%8c-qCMfqZGcSD\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528WHERE\u5b50\u53e5\u5728SELECT\u8bed\u53e5\u4e2d\u8fc7\u6ee4\u884c<\/h1>\n<p>MySQL\u662f\u4e00\u79cd\u6d41\u884c\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u7528\u4e8e\u5404\u79cdWeb\u5e94\u7528\u7a0b\u5e8f\u548c\u7f51\u7ad9\u5f00\u53d1\u4e2d\u3002\u5728MySQL\u4e2d\uff0c\u4f7f\u7528SELECT\u8bed\u53e5\u53ef\u4ee5\u4ece\u6570\u636e\u5e93\u8868\u4e2d\u68c0\u7d22\u6570\u636e\u3002\u7136\u800c\uff0c\u6709\u65f6\u6211\u4eec\u53ea\u9700\u8981\u68c0\u7d22\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u884c\uff0c\u8fd9\u65f6\u5c31\u53ef\u4ee5\u4f7f\u7528WHERE\u5b50\u53e5\u6765\u8fc7\u6ee4\u884c\u3002<\/p>\n<h2 id=\"where%e5%ad%90%e5%8f%a5%e7%9a%84%e8%af%ad%e6%b3%95-qCMfqZGcSD\">WHERE\u5b50\u53e5\u7684\u8bed\u6cd5<\/h2>\n<p>WHERE\u5b50\u53e5\u7528\u4e8e\u5728SELECT\u8bed\u53e5\u4e2d\u6307\u5b9a\u6761\u4ef6\uff0c\u53ea\u6709\u6ee1\u8db3\u6761\u4ef6\u7684\u884c\u624d\u4f1a\u88ab\u68c0\u7d22\u51fa\u6765\u3002WHERE\u5b50\u53e5\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT \u5217\u540d FROM \u8868\u540d WHERE \u6761\u4ef6;<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c\u5217\u540d\u662f\u8981\u68c0\u7d22\u7684\u5217\u7684\u540d\u79f0\uff0c\u8868\u540d\u662f\u8981\u68c0\u7d22\u7684\u8868\u7684\u540d\u79f0\uff0c\u6761\u4ef6\u662f\u4e00\u4e2a\u903b\u8f91\u8868\u8fbe\u5f0f\uff0c\u7528\u4e8e\u6307\u5b9a\u6ee1\u8db3\u54ea\u4e9b\u884c\u5e94\u8be5\u88ab\u68c0\u7d22\u51fa\u6765\u3002<\/p>\n<h2 id=\"where%e5%ad%90%e5%8f%a5%e7%9a%84%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-qCMfqZGcSD\">WHERE\u5b50\u53e5\u7684\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528WHERE\u5b50\u53e5\u7684\u7b80\u5355\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE age &gt; 30;<\/code><\/pre>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4ece\u540d\u4e3a\"employees\"\u7684\u8868\u4e2d\u68c0\u7d22\u51fa\u6240\u6709\u5e74\u9f84\u5927\u4e8e30\u5c81\u7684\u5458\u5de5\u7684\u4fe1\u606f\u3002<\/p>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u6bd4\u8f83\u8fd0\u7b97\u7b26\uff08\u5982&gt;\u3001&lt;\u3001=\u7b49\uff09\uff0cWHERE\u5b50\u53e5\u8fd8\u53ef\u4ee5\u4f7f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26\uff08\u5982AND\u3001OR\u3001NOT\uff09\u6765\u7ec4\u5408\u591a\u4e2a\u6761\u4ef6\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE age &gt; 30 AND department = 'IT';<\/code><\/pre>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u68c0\u7d22\u51fa\u5e74\u9f84\u5927\u4e8e30\u5c81\u4e14\u6240\u5728\u90e8\u95e8\u4e3a\"IT\"\u7684\u5458\u5de5\u7684\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%80%9a%e9%85%8d%e7%ac%a6%e8%bf%9b%e8%a1%8c%e6%a8%a1%e7%b3%8a%e5%8c%b9%e9%85%8d-qCMfqZGcSD\">\u4f7f\u7528\u901a\u914d\u7b26\u8fdb\u884c\u6a21\u7cca\u5339\u914d<\/h2>\n<p>\u5728WHERE\u5b50\u53e5\u4e2d\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26\u8fdb\u884c\u6a21\u7cca\u5339\u914d\u3002\u5e38\u7528\u7684\u901a\u914d\u7b26\u6709\u4e24\u4e2a\uff1a%\u548c_\u3002%\u8868\u793a\u5339\u914d\u4efb\u610f\u5b57\u7b26\uff08\u5305\u62ec0\u4e2a\u5b57\u7b26\uff09\uff0c_\u8868\u793a\u5339\u914d\u5355\u4e2a\u5b57\u7b26\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u901a\u914d\u7b26\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE name LIKE 'J%';<\/code><\/pre>\n<p>\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u68c0\u7d22\u51fa\u540d\u5b57\u4ee5\u5b57\u6bcd\"J\"\u5f00\u5934\u7684\u5458\u5de5\u7684\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-qCMfqZGcSD\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528WHERE\u5b50\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728SELECT\u8bed\u53e5\u4e2d\u8fc7\u6ee4\u884c\uff0c\u53ea\u68c0\u7d22\u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u7684\u6570\u636e\u3002\u8fd9\u5728\u5b9e\u9645\u7684\u6570\u636e\u5e93\u67e5\u8be2\u4e2d\u975e\u5e38\u6709\u7528\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5feb\u901f\u51c6\u786e\u5730\u83b7\u53d6\u6240\u9700\u7684\u6570\u636e\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684MySQL\u6570\u636e\u5e93\u6258\u7ba1\u670d\u52a1\uff0c\u540e\u6d6a\u4e91\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u591a\u79cd\u9009\u62e9\u3002\u65e0\u8bba\u60a8\u662f\u4e2a\u4eba\u5f00\u53d1\u8005\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u540e\u6d6a\u4e91\u90fd\u80fd\u6ee1\u8db3\u60a8\u7684\u9700\u6c42\u3002\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u7f51\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528WHERE\u5b50\u53e5\u5728SELECT\u8bed\u53e5\u4e2d\u8fc7\u6ee4\u884c MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528WHERE\u5b50\u53e5\u5728SE [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197851],"tags":[],"class_list":["post-217763","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=217763"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217763\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}