{"id":717,"date":"2024-06-05T20:38:03","date_gmt":"2024-06-05T12:38:03","guid":{"rendered":"https:\/\/cn.raksmart.com\/blog\/host\/4254.html"},"modified":"2024-06-05T20:38:03","modified_gmt":"2024-06-05T12:38:03","slug":"%e6%80%8e%e4%b9%88%e6%93%8d%e4%bd%9cmysql%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/cn.raksmart.com\/blog\/knowledge\/717.html","title":{"rendered":"\u600e\u4e48\u64cd\u4f5cMySQL\u6570\u636e\u5e93"},"content":{"rendered":"<div class=\"entry-content e-content\" itemprop=\"description articleBody\">\n<p>\u4f5c\u4e3a\u4e00\u540d\u7f51\u7ad9\u4f18\u5316\u4eba\u5458\uff0c\u6211\u4eec\u6240\u9700\u8981\u5b66\u4e60\u7684\u77e5\u8bc6\u8fd8\u662f\u6bd4\u8f83\u5168\u9762\u7684\uff0c\u50cf\u4e00\u4e9b\u6570\u636e\u5e93\u548c\u6b63\u5219\u8868\u8fbe\u7b49\uff0c\u4f46\u662f\u8fd9\u4e9b\u5e76\u4e0d\u7528\u5b66\u7cbe\uff0c\u6709\u4e2a\u57fa\u672c\u7684\u4e86\u89e3\u5373\u53ef\uff0c\u4e0b\u9762\u4e00\u8d77\u548cRaksmart<strong><a rel=\"noreferrer noopener\" aria-label=\"\u7f8e\u56fd\u670d\u52a1\u5668\uff08\u5728\u65b0\u7a97\u53e3\u6253\u5f00\uff09\" href=\"https:\/\/cn.raksmart.com\/\" target=\"_blank\">\u7f8e\u56fd\u670d\u52a1\u5668<\/a><\/strong>\u5c0f\u7f16\u770b\u770b\u76f8\u5173\u7684\u4ecb\u7ecd\u5427\u3002<\/p>\n<p class=\"has-text-color has-vivid-red-color\">\u5411\u8868\u4e2d\u63d2\u5165\u6570\u636e<\/p>\n<p>insert \u8bed\u53e5\u53ef\u4ee5\u7528\u6765\u5c06\u4e00\u884c\u6216\u591a\u884c\u6570\u636e\u63d2\u5230\u6570\u636e\u5e93\u8868\u4e2d, \u4f7f\u7528\u7684\u4e00\u822c\u5f62\u5f0f\u5982\u4e0b:<\/p>\n<p>insert [into] \u8868\u540d [(\u5217\u540d1, \u5217\u540d2, \u5217\u540d3, \u2026)] values (\u503c1, \u503c2, \u503c3, \u2026);<\/p>\n<p>\u5176\u4e2d [] \u5185\u7684\u5185\u5bb9\u662f\u53ef\u9009\u7684, \u4f8b\u5982, \u8981\u7ed9 samp_db \u6570\u636e\u5e93\u4e2d\u7684 students \u8868\u63d2\u5165\u4e00\u6761\u8bb0\u5f55, \u6267\u884c\u8bed\u53e5:<\/p>\n<p>insert into students values(NULL, \u201c\u738b\u521a\u201d, \u201c\u7537\u201d, 20, \u201c13811371377\u201d);<\/p>\n<p>\u6309\u56de\u8f66\u952e\u786e\u8ba4\u540e\u82e5\u63d0\u793a Query Ok, 1 row affected (0.05 sec) \u8868\u793a\u6570\u636e\u63d2\u5165\u6210\u529f\u3002<br \/>\n\u82e5\u63d2\u5165\u5931\u8d25\u8bf7\u68c0\u67e5\u662f\u5426\u5df2\u9009\u62e9\u9700\u8981\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u3002<\/p>\n<p>\u6709\u65f6\u6211\u4eec\u53ea\u9700\u8981\u63d2\u5165\u90e8\u5206\u6570\u636e, \u6216\u8005\u4e0d\u6309\u7167\u5217\u7684\u987a\u5e8f\u8fdb\u884c\u63d2\u5165, \u53ef\u4ee5\u4f7f\u7528\u8fd9\u6837\u7684\u5f62\u5f0f\u8fdb\u884c\u63d2\u5165:<\/p>\n<p>insert into students (name, sex, age)<br \/>\nvalues(\u201c\u5b59\u4e3d\u534e\u201d, \u201c\u5973\u201d, 21);<\/p>\n<p class=\"has-text-color has-vivid-red-color\">\u67e5\u8be2\u8868\u4e2d\u7684\u6570\u636e<\/p>\n<p>select \u8bed\u53e5\u5e38\u7528\u6765\u6839\u636e\u4e00\u5b9a\u7684\u67e5\u8be2\u89c4\u5219\u5230\u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u6570\u636e, \u5176\u57fa\u672c\u7684\u7528\u6cd5\u4e3a:<\/p>\n<p>select \u5217\u540d\u79f0 from \u8868\u540d\u79f0 [\u67e5\u8be2\u6761\u4ef6];<\/p>\n<p>\u4f8b\u5982\u8981\u67e5\u8be2 students \u8868\u4e2d\u6240\u6709\u5b66\u751f\u7684\u540d\u5b57\u548c\u5e74\u9f84, \u8f93\u5165\u8bed\u53e5 select name, age from students; \u6267\u884c\u7ed3\u679c\u5982\u4e0b:<\/p>\n<p>\u00a0\u00a0\u00a0<br \/>\n<a href=\"https:\/\/www.raksmart.com\/cps\/7921\" target=\"_blank\" rel=\"noopener\">mysql<\/a>&gt; select name, age from students;<\/p>\n<p>\u00a0\u00a0\u00a0<br \/>\n+\u2014\u2014\u2013+\u2014\u2013+<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\nname\u00a0\u00a0 | age |<\/p>\n<p>\u00a0\u00a0\u00a0<br \/>\n+\u2014\u2014\u2013+\u2014\u2013+<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u738b\u521a\u00a0\u00a0 |\u00a0 20<br \/>\n|<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u5b59\u4e3d\u534e |\u00a0 21 |<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u738b\u6c38\u6052 |\u00a0 23 |<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u90d1\u4fca\u6770 |\u00a0 19 |<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u9648\u82b3\u00a0\u00a0 |\u00a0 22<br \/>\n|<\/p>\n<p>\u00a0\u00a0\u00a0 |<br \/>\n\u5f20\u4f1f\u670b |\u00a0 21 |<\/p>\n<p>\u00a0\u00a0\u00a0<br \/>\n+\u2014\u2014\u2013+\u2014\u2013+<\/p>\n<p>\u00a0\u00a0\u00a0 6<br \/>\nrows in set (0.00 sec)<\/p>\n<p>\u00a0\u00a0\u00a0<br \/>\n<a href=\"https:\/\/www.raksmart.com\/cps\/7921\" target=\"_blank\" rel=\"noopener\">mysql<\/a>&gt;<\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26<br \/>\n\u67e5\u8be2\u8868\u4e2d\u6240\u6709\u7684\u5185\u5bb9, \u8bed\u53e5: select from students;<\/p>\n<p class=\"has-text-color has-vivid-red-color\">\u6309\u7279\u5b9a\u6761\u4ef6\u67e5\u8be2<\/p>\n<p>where \u5173\u952e\u8bcd\u7528\u4e8e\u6307\u5b9a\u67e5\u8be2\u6761\u4ef6, \u7528\u6cd5\u5f62\u5f0f\u4e3a: select \u5217\u540d\u79f0 from \u8868\u540d\u79f0 where \u6761\u4ef6;<\/p>\n<p>\u4ee5\u67e5\u8be2\u6240\u6709\u6027\u522b\u4e3a\u5973\u7684\u4fe1\u606f\u4e3a\u4f8b, \u8f93\u5165\u67e5\u8be2\u8bed\u53e5: select * from students where sex=\u201d\u5973\u201d;<\/p>\n<p>where \u5b50\u53e5\u4e0d\u4ec5\u4ec5\u652f\u6301 \u201cwhere \u5217\u540d = \u503c\u201d \u8fd9\u79cd\u540d\u7b49\u4e8e\u503c\u7684\u67e5\u8be2\u5f62\u5f0f, \u5bf9\u4e00\u822c\u7684\u6bd4\u8f83\u8fd0\u7b97\u7684\u8fd0\u7b97\u7b26\u90fd\u662f\u652f\u6301\u7684, \u4f8b\u5982 =\u3001&gt;\u3001&lt;\u3001&gt;=\u3001&lt;\u3001!= \u4ee5\u53ca\u4e00\u4e9b\u6269\u5c55\u8fd0\u7b97\u7b26 is [not] null\u3001in\u3001like \u7b49\u7b49\u3002 \u8fd8\u53ef\u4ee5\u5bf9\u67e5\u8be2\u6761\u4ef6\u4f7f\u7528 or \u548c and \u8fdb\u884c\u7ec4\u5408\u67e5\u8be2, \u4ee5\u540e\u8fd8\u4f1a\u5b66\u5230\u66f4\u52a0\u9ad8\u7ea7\u7684\u6761\u4ef6\u67e5\u8be2\u65b9\u5f0f, \u8fd9\u91cc\u4e0d\u518d\u591a\u505a\u4ecb\u7ecd\u3002<\/p>\n<p>\u793a\u4f8b:<\/p>\n<p>\u67e5\u8be2\u5e74\u9f84\u5728 21 \u5c81\u4ee5\u4e0a\u7684\u6240\u6709\u4eba\u4fe1\u606f: select * from students where age &gt; 21;<\/p>\n<p>\u67e5\u8be2\u540d\u5b57\u4e2d\u5e26\u6709 \u201c\u738b\u201d \u5b57\u7684\u6240\u6709\u4eba\u4fe1\u606f: select * from students where name like \u201c%\u738b%\u201d;<\/p>\n<p>\u67e5\u8be2 id \u5c0f\u4e8e 5 \u4e14\u5e74\u9f84\u5927\u4e8e 20 \u7684\u6240\u6709\u4eba\u4fe1\u606f: select * from students where id&lt;5 and age&gt;20;<\/p>\n<p class=\"has-text-color has-vivid-red-color\">\u66f4\u65b0\u8868\u4e2d\u7684\u6570\u636e<\/p>\n<p>update \u8bed\u53e5\u53ef\u7528\u6765\u4fee\u6539\u8868\u4e2d\u7684\u6570\u636e, \u57fa\u672c\u7684\u4f7f\u7528\u5f62\u5f0f\u4e3a:<\/p>\n<p>update \u8868\u540d\u79f0 set \u5217\u540d\u79f0=\u65b0\u503c where \u66f4\u65b0\u6761\u4ef6;<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b:<\/p>\n<p>\u5c06 id \u4e3a 5 \u7684\u624b\u673a\u53f7\u6539\u4e3a\u9ed8\u8ba4\u7684\u201d-\u201c:update students set tel=default where id=5;<\/p>\n<p>\u5c06\u6240\u6709\u4eba\u7684\u5e74\u9f84\u589e\u52a0 1: update students set age=age+1;<\/p>\n<p>\u5c06\u624b\u673a\u53f7\u4e3a 13288097888 \u7684\u59d3\u540d\u6539\u4e3a \u201c\u5f20\u4f1f\u9e4f\u201d, \u5e74\u9f84\u6539\u4e3a 19: update students set name=\u201d\u5f20\u4f1f\u9e4f\u201d, age=19 where tel=\u201d13288097888\u2033;<\/p>\n<p class=\"has-text-color has-vivid-red-color\">\u5220\u9664\u8868\u4e2d\u7684\u6570\u636e<\/p>\n<p>delete \u8bed\u53e5\u7528\u4e8e\u5220\u9664\u8868\u4e2d\u7684\u6570\u636e, \u57fa\u672c\u7528\u6cd5\u4e3a:<\/p>\n<p>delete from \u8868\u540d\u79f0 where \u5220\u9664\u6761\u4ef6;<\/p>\n<p>\u4f7f\u7528\u793a\u4f8b:<\/p>\n<p>\u5220\u9664 id \u4e3a 2 \u7684\u884c: delete from students where id=2;<\/p>\n<p>\u5220\u9664\u6240\u6709\u5e74\u9f84\u5c0f\u4e8e 21 \u5c81\u7684\u6570\u636e: delete from students where age&lt;20;<\/p>\n<p>\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u6570\u636e: delete from students;\u66f4\u591a\u7684\u76f8\u5173\u5185\u5bb9\u53ef\u4ee5\u9605\u8bfb<a href=\"https:\/\/cn.raksmart.com\/blog\/knowledge\/666.html\">\u4ec0\u4e48\u662fMYSQL\u6570\u636e\u5e93<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u4e3a\u4e00\u540d\u7f51\u7ad9\u4f18\u5316\u4eba\u5458\uff0c\u6211\u4eec\u6240\u9700\u8981\u5b66\u4e60\u7684\u77e5\u8bc6\u8fd8\u662f\u6bd4\u8f83\u5168\u9762\u7684\uff0c\u50cf\u4e00\u4e9b\u6570\u636e\u5e93\u548c\u6b63\u5219\u8868\u8fbe\u7b49\uff0c\u4f46\u662f\u8fd9\u4e9b\u5e76\u4e0d\u7528\u5b66\u2026 <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[1017],"class_list":["post-717","post","type-post","status-publish","format-standard","hentry","category-knowledge","tag-mysql"],"_links":{"self":[{"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/posts\/717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/comments?post=717"}],"version-history":[{"count":0,"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/posts\/717\/revisions"}],"wp:attachment":[{"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/media?parent=717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/categories?post=717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.raksmart.com\/blog\/wp-json\/wp\/v2\/tags?post=717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}