{"id":438,"date":"2020-06-25T15:58:57","date_gmt":"2020-06-25T07:58:57","guid":{"rendered":"http:\/\/www.leohe.net.cn\/?p=438"},"modified":"2020-06-25T15:58:57","modified_gmt":"2020-06-25T07:58:57","slug":"mysql-%e5%9b%9e%e8%a1%a8%e5%8f%8a%e7%b4%a2%e5%bc%95%e8%a6%86%e7%9b%96","status":"publish","type":"post","link":"https:\/\/china-abc.leohe.net.cn\/?p=438","title":{"rendered":"mysql \u56de\u8868\u53ca\u7d22\u5f15\u8986\u76d6"},"content":{"rendered":"<p>MySQL <strong>innodb\u7684\u4e3b\u952e\u7d22\u5f15\u662f\u7c07\u96c6\u7d22\u5f15<\/strong>\uff0c<strong>\u4e5f\u5c31\u662f\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u7684\u662f\u6574\u4e2a\u5355\u6761\u8bb0\u5f55\u7684\u6240\u6709\u5b57\u6bb5\u503c\uff0c\u4e0d\u662f\u4e3b\u952e\u7d22\u5f15\u7684\u5c31\u662f\u975e\u7c07\u96c6\u7d22\u5f15\uff0c\u975e\u7c07\u96c6\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u7684\u662f\u4e3b\u952e\u5b57\u6bb5\u7684\u503c\u3002<\/strong><\/p>\n<p>\u56de\u8868\u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/p>\n<p>\u5c31\u662f\u4f60\u6267\u884c\u4e00\u6761sql\u8bed\u53e5\uff0c\u9700\u8981\u4ece\u4e24\u4e2ab+\u7d22\u5f15\u4e2d\u53bb\u53d6\u6570\u636e\u3002<\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u8868tbl\u6709a,b,c\u4e09\u4e2a\u5b57\u6bb5\uff0c\u5176\u4e2da\u662f\u4e3b\u952e\uff0cb\u4e0a\u5efa\u4e86\u7d22\u5f15\uff0c\u7136\u540e\u7f16\u5199sql\u8bed\u53e5SELECT * FROM tbl WHERE a=1\u8fd9\u6837\u4e0d\u4f1a\u4ea7\u751f\u56de\u8868\uff0c\u56e0\u4e3a<strong>\u6240\u6709\u7684\u6570\u636e\u5728a\u7684\u7d22\u5f15\u6811\u4e2d\u5747\u80fd\u627e\u5230<\/strong>\uff0cSELECT * FROM tbl WHERE b=1<strong>\u8fd9\u6837\u5c31\u4f1a\u4ea7\u751f\u56de\u8868<\/strong>\uff0c\u56e0\u4e3a<strong>where\u6761\u4ef6\u662fb\u5b57\u6bb5\uff0c\u90a3\u4e48\u4f1a\u53bbb\u7684\u7d22\u5f15\u6811\u91cc\u67e5\u627e\u6570\u636e\uff0c\u4f46b\u7684\u7d22\u5f15\u91cc\u9762\u53ea\u6709a,b\u4e24\u4e2a\u5b57\u6bb5\u7684\u503c\uff0c\u6ca1\u6709c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u67e5\u8be2\u4e3a\u4e86\u53d6\u5230c\u5b57\u6bb5\uff0c\u5c31\u8981\u53d6\u51fa\u4e3b\u952ea\u7684\u503c\uff0c\u7136\u540e\u53bba\u7684\u7d22\u5f15\u6811\u53bb\u627ec\u5b57\u6bb5\u7684\u6570\u636e<\/strong>\u3002<\/p>\n<p>\u67e5\u4e86\u4e24\u4e2a\u7d22\u5f15\u6811\uff0c\u8fd9\u5c31\u53eb\u56de\u8868\u3002<\/p>\n<p><strong>\u7d22\u5f15\u8986\u76d6\u5c31\u662f\u67e5\u8fd9\u4e2a\u7d22\u5f15\u80fd\u67e5\u5230\u4f60\u6240\u9700\u8981\u7684\u6240\u6709\u6570\u636e\uff0c\u4e0d\u9700\u8981\u53bb\u53e6\u5916\u7684\u6570\u636e\u7ed3\u6784\u53bb\u67e5\u3002\u5176\u5b9e\u5c31\u662f\u4e0d\u7528\u56de\u8868\u3002<\/strong><\/p>\n<p>\u6bd4\u5982\u8bf4\u4f60\u5efa\u7acb\u4e86\u4e00\u4e2aA\uff0cB\u8054\u5408\u7d22\u5f15\uff0c\u4f60\u7684sql\u8bed\u53e5\u662f select A\uff0cB from table where A=xxx, B=xxx\u4f60\u4f1a\u53d1\u73b0\u4f60\u60f3\u8981\u641c\u7d22\u7684A\uff0cB\u4ece\u7d22\u5f15\u6570\u636e\u4e2d\u5df2\u7ecf\u5b58\u5728\u4e86\uff0c\u538b\u6839\u4e0d\u7528\u62ff\u5230id\u5230\u8868\u6570\u636e\u4e2d\u53bb\u67e5\u627e\uff0c\u6b64\u65f6\u4fbf\u4e0d\u4f1a\u56de\u8868\uff0c\u8fd9\u79cd\u73b0\u8c61\u5c31\u53eb\u505a\u7d22\u5f15\u8986\u76d6\u3002<\/p>\n<p>\u600e\u4e48\u907f\u514d\uff1f\u4e0d\u662f\u5fc5\u987b\u7684\u5b57\u6bb5\u5c31\u4e0d\u8981\u51fa\u73b0\u5728SELECT\u91cc\u9762\u3002\u6216\u8005b,c\u5efa\u8054\u5408\u7d22\u5f15\u3002\u4f46\u5177\u4f53\u60c5\u51b5\u8981\u5177\u4f53\u5206\u6790\uff0c\u7d22\u5f15\u5b57\u6bb5\u591a\u4e86\uff0c\u5b58\u50a8\u548c\u63d2\u5165\u6570\u636e\u65f6\u7684\u6d88\u8017\u4f1a\u66f4\u5927\u3002\u8fd9\u662f\u4e2a\u5e73\u8861\u95ee\u9898\u3002<\/p>\n<p>\u5185\u5bb9\u6765\u6e90\uff1a<\/p>\n<p><a href=\"https:\/\/www.zhihu.com\/question\/347087093\/answer\/830934717\">https:\/\/www.zhihu.com\/question\/347087093\/answer\/830934717<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL innodb\u7684\u4e3b\u952e\u7d22\u5f15\u662f\u7c07\u96c6\u7d22\u5f15\uff0c\u4e5f\u5c31\u662f\u7d22\u5f15\u7684\u53f6\u5b50\u8282\u70b9\u5b58\u7684\u662f\u6574\u4e2a\u5355\u6761\u8bb0\u5f55\u7684\u6240\u6709\u5b57\u6bb5\u503c\uff0c\u4e0d\u662f\u4e3b\u952e\u7d22\u5f15 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/438"}],"collection":[{"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=438"}],"version-history":[{"count":1,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/438\/revisions"}],"predecessor-version":[{"id":439,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/438\/revisions\/439"}],"wp:attachment":[{"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/china-abc.leohe.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}