{"id":41,"date":"2020-12-28T19:12:11","date_gmt":"2020-12-28T11:12:11","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/database\/?p=41"},"modified":"2021-05-23T19:07:33","modified_gmt":"2021-05-23T11:07:33","slug":"dml-%e6%95%b0%e6%8d%ae%e7%9a%84%e5%a2%9e%e5%88%a0%e6%94%b9","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/db\/post-41.html","title":{"rendered":"DML — \u6570\u636e\u7684\u589e\u5220\u6539"},"content":{"rendered":"\n

\uff08\u8fd9\u91cc\uff0c\u5047\u8bbe\u4f7f\u7528\u524d\u4e00\u7bc7\u5efa\u7acb\u7684 student \u8868\u8fdb\u884c\u64cd\u4f5c\uff09<\/p>\n\n\n\n

1. \u67e5\u8be2\u8868\u4e2d\u6570\u636e\uff1a <\/h5>\n\n\n\n
select * from student;<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7684 * \u8868\u793a\u6240\u6709\u7684\u5217\uff08\u5c5e\u6027\uff09<\/p>\n\n\n\n
\uff08\u8868\u793a\u5176\u4e2d\u67d0\u4e9b\u5217\u65f6\uff0c\u76f4\u63a5\u4f7f\u7528\u5217\u540d\u5373\u53ef\uff0c\u591a\u4e2a\u5217\u7528\u9017\u53f7\u9694\u5f00\uff09<\/p>\n\n\n\n
2.\u5f80\u8868\u4e2d\u63d2\u5165\u6570\u636e\uff1a<\/h5>\n\n\n\n
\uff08\u63d2\u5165\u4e00\u6761\u4fe1\u606f\uff0c\u59d3\u540d\u4e3a \u2018\u5f20\u4e09\u2019 \uff0c\u5e74\u9f84\u4e3a \u201810\u2019\uff09<\/p>\n\n\n\n
insert into student(name,age) values(\"zhangsan\",10);<\/code><\/pre>\n\n\n\n
\u8868\u540d\u540e\u9762\u7684\u5217\u4e0d\u6307\u5b9a\u65f6\uff0c\u9ed8\u8ba4\u5c31\u662f\u6240\u6709\u5217<\/p>\n\n\n\n
\u9664\u6570\u5b57\u7c7b\u578b\u5916\uff0c\u6570\u503c\u5747\u9700\u8981\u5f15\u53f7\uff0c\u5355\uff0c\u53cc\u5f15\u53f7\u5747\u53ef<\/p>\n\n\n\n
\u4e00\u6b21\u63d2\u5165\u591a\u6761\u8bb0\u5f55\u65f6\uff0c\u7528 \u9017\u53f7”,” \u9694\u5f00<\/p>\n\n\n\n
3.\u5220\u9664\u8868\u4e2d\u6570\u636e\uff1a<\/h5>\n\n\n\n
\uff08\u5220\u9664 \u2018\u5f20\u4e09\u2019 \u7684\u6570\u636e\u4fe1\u606f\uff09<\/p>\n\n\n\n
\uff08\u8fd9\u4e2a\u64cd\u4f5c\u5fc5\u987b\u6307\u5b9a\u5220\u9664\u6761\u4ef6\uff09<\/p>\n\n\n\n
delete from student where name=\"zhangsan\";<\/code><\/pre>\n\n\n\n
\uff08\u5220\u9664\u8868\u4e2d\u6240\u6709\u7684\u6570\u636e\uff09\uff08\u5bf9 innoDB \u548c myisam \u90fd\u6709\u6548\uff09<\/p>\n\n\n\n
\uff08\u4e0d\u63a8\u8350 delete from student; \u6b64\u547d\u4ee4\u4e5f\u53ef\u4ee5\u5220\u9664\u8868\u4e2d\u6570\u636e)<\/p>\n\n\n\n
truncate table student;<\/code><\/pre>\n\n\n\n
4.\u66f4\u6539\u8868\u4e2d\u6570\u636e\uff1a<\/h5>\n\n\n\n
\uff08\u66f4\u6539\u8868\u4e2d \u2018\u5f20\u4e09\u2019 \u7684\u4fe1\u606f\uff0c\u5e74\u9f84\u6539\u4e3a 12\uff09<\/p>\n\n\n\n
update student set age=12  where name=\"zhangsan\";<\/code><\/pre>\n\n\n\n
\u66f4\u6539\u591a\u4e2a\u503c\u65f6\uff0c\u4f7f\u7528 \u9017\u53f7”,” \u9694\u5f00, \u4f8b\u5982<\/p>\n\n\n\n
update student set age=12,name='\u674e\u56db'  where name=\"zhangsan\";<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\uff08\u8fd9\u91cc\uff0c\u5047\u8bbe\u4f7f\u7528\u524d\u4e00\u7bc7\u5efa\u7acb\u7684 student \u8868\u8fdb\u884c\u64cd\u4f5c\uff09 1. \u67e5\u8be2\u8868\u4e2d\u6570\u636e\uff1a \u8fd9\u91cc\u7684 * \u8868\u793a\u6240\u6709\u7684\u5217\uff08\u5c5e… \u7ee7\u7eed\u9605\u8bfb DML — \u6570\u636e\u7684\u589e\u5220\u6539<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/41"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/comments?post=41"}],"version-history":[{"count":1,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":42,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/41\/revisions\/42"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/media?parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/categories?post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/tags?post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}