{"id":735,"date":"2019-05-01T17:53:48","date_gmt":"2019-05-01T09:53:48","guid":{"rendered":"http:\/\/www.eait.co\/?p=735"},"modified":"2019-05-01T18:00:15","modified_gmt":"2019-05-01T10:00:15","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93-%e4%b8%80","status":"publish","type":"post","link":"https:\/\/notes.coremix.net\/?p=735","title":{"rendered":"Mysql\u6570\u636e\u5e93 \u4e00"},"content":{"rendered":"
\u6ce8\u610f\u4e8b\u9879\uff1a<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u4e0d\u4e25\u683c\u533a\u5206\u5927\u5c0f\u5199\uff0c\u9ed8\u8ba4\u5927\u5199\u4e3a\u7a0b\u5e8f\u4ee3\u7801\uff0c\u5c0f\u5199\u4e3a\u7a0b\u5e8f\u5458\u5199\u7684\u4ee3\u7801\u3002<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u6bcf\u4e2a\u8bed\u53e5\u90fd\u4ee5;\u6216\u8005\\g\u7ed3\u675f<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5f3a\u5236\u6570\u636e\u7c7b\u578b\uff0c\u4efb\u4f55\u6570\u636e\u90fd\u6709\u81ea\u5df1\u7684\u6570\u636e\u7c7b\u578b<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u521b\u5efa\u6570\u636e\u8868\u7684\u65f6\u5019\uff0c\u00a0\u6700\u540e\u4e00\u884c\u4e0d\u9700\u8981\u9017\u53f7<\/div>\n
<\/div>\n
<\/div>\n
\u8fdb\u5165\u4e0e\u9000\u51fa\uff1a<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 mysql -uusername-ppassword<\/div>\n
\u00a0 \u00a0\u00a0\u00a0 \u00a0 exit<\/div>\n
<\/div>\n
\u6570\u636e\u5e93\u64cd\u4f5c\u8bed\u53e5\uff1a<\/div>\n
\u663e\u793a\u6240\u6709\u7684\u6570\u636e\u5e93\uff1a\u00a0\u00a0 \u00a0SHOW DATABASES;<\/div>\n
\u521b\u5efa\u5e93\uff1a\u00a0\u00a0 \u00a0CREATE DATABASE [IF NOT EXISTS] DE_NAME;<\/div>\n
\u91cd\u590d\u521b\u5efa\u4f1a\u62a5\u9519\uff0c\u53ef\u4ee5\u9009\u62e9\u6027\u52a0\u4e0a\u00a0if\u00a0not\u00a0exists<\/div>\n
\u5220\u9664\u6570\u636e\u5e93\uff1a \u00a0\u00a0 \u00a0DROP DATABASE [IF EXISTS] DB_NAME;<\/div>\n
\u5982\u679c\u4e0d\u786e\u5b9a\u6570\u636e\u5e93\u662f\u5426\u5b58\u5728\uff0c\u53ef\u4ee5\u9009\u62e9\u6027\u52a0\u4e0a\u00a0\u00a0 \u00a0IF EXISTS<\/div>\n
\u8fdb\u5165\u6570\u636e\u5e93\uff1a\u00a0\u00a0 \u00a0USE\u00a0db_name;<\/div>\n
<\/div>\n
<\/div>\n
\u8868\u64cd\u4f5c\u8bed\u53e5\uff1a<\/div>\n
<\/div>\n
\u663e\u793a\u6240\u6709\u7684\u8868\uff1a SHOW TABLES;<\/div>\n
\u521b\u5efa\u8868\uff1aCREATE TABLE [IF NOT EXISTS]\u00a0tb_name(CREATE DEFINITION…)<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1a\u00a0create table students(id int(10),name varchar(20),age int(10),sex varchar(10))<\/div>\n
\u793a\u4f8b\uff1a CREATE TABLE\u00a0\u8868\u540d (\u5b57\u6bb5\u540d1\u00a0\u6570\u636e\u7c7b\u578b[\u7ea6\u675f\u6761\u4ef6][\u9ed8\u8ba4\u503c], \u5b57\u6bb5\u540d2 \u6570\u636e\u7c7b\u578b[\u7ea6\u675f\u6761\u4ef6][\u9ed8\u8ba4\u503c],[\u8868\u7ea7\u522b\u7684\u7ea6\u675f\u6761\u4ef6]);<\/div>\n
\u793a\u4f8b2\uff1a CREATE TABLE student(id int(1), name varchar(20), age int(10) ,sex varchar(6) );\u00a0 #\u6700\u540e\u4e0d\u52a0\u9017\u53f7\uff0c\u5426\u5219mysql\u8ba4\u4e3a\u8fd8\u8981\u5199\u4e1c\u897f<\/div>\n
\u663e\u793a\u521b\u5efa\u8868\u4fe1\u606f\uff1aSHOW CREATE TABLE\u00a0tb_name;<\/div>\n
\u5220\u9664\u8868: DROP TABLE tb_name;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1a drop table students;<\/div>\n
<\/div>\n
<\/div>\n
\u63d2\u5165\u6570\u636e\uff1a<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u6307\u5b9a\u5b57\u6bb5\u63d2\u5165\uff1aINSERT INTO tb_name(field_name) VALUES(field_values);<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5168\u5b57\u6bb5\u63d2\u5165: INSERT INTO tb_name VALUES(all_values);<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u591a\u884c\u63d2\u5165\uff1aINSERT INTO tb_name(field_name) VALUES(value_1),(value_2);<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1a\u00a0insert\u00a0into student values(1,’zhangsan’,18,’nan’),(2,’lisi’,11,’nv’),(3,’wangwu’,13,’nv’),(4,’moran’,18,’nan’);<\/div>\n
<\/div>\n
<\/div>\n
\u67e5\u8be2\u6570\u636e\uff1a<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u6307\u5b9a\u5b57\u6bb5\u67e5\u8be2\uff1aSELECT\u00a0field_names FROM tb_name;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5168\u5b57\u6bb5\u67e5\u8be2\uff1a\u00a0 \u00a0 SELECT*FROM tb_name;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u5e26\u6761\u4ef6\u67e5\u8be2\uff1a\u00a0\u00a0 \u00a0 SELECT field_names FROM tb_name WHERE conditions;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1a\u00a0 \u00a0 select * from student where sex = ‘nan’;<\/div>\n
<\/div>\n
<\/div>\n
\u4fee\u6539\u6570\u636e\uff1a<\/div>\n
\u00a0 \u00a0 \u4fee\u6539\u6240\u6709\u6570\u636e: UPDATA\u00a0tb_name\u00a0SETfield_1=value_1<\/div>\n
\u00a0 \u00a0 \u4fee\u6539\u591a\u4e2a\uff1a UPDATE\u00a0tb_name\u00a0SET\u00a0field_1=value_1,field_2=value_2;<\/div>\n
\u00a0 \u00a0 \u4fee\u6539\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\uff1aUPDATE tb_name SET field_1 WHERE conditions;<\/div>\n
\u00a0 \u00a0 \u793a\u4f8b\uff1a\u00a0 \u00a0update student set sex = ‘nan’ where sex = ‘nv’;<\/div>\n
\u6ce8\u610f\uff1a\u4e00\u5b9a\u8981\u5199where\u6761\u4ef6\uff0c\u5426\u5219\u4f1a\u4fee\u6539\u8868\u4e2d\u5168\u90e8\u6570\u636e<\/div>\n
<\/div>\n
<\/div>\n
\u5220\u9664\u6570\u636e\uff1a<\/div>\n
\u00a0 \u00a0 \u5220\u9664\u8868\u4e2d\u6240\u6709\u6570\u636e\uff1a DELETE FROM\u00a0tb_name;<\/div>\n
\u00a0 \u00a0 \u5220\u9664\u8868\u4e2d\u6ee1\u8db3\u6761\u4ef6\u7684\u6570\u636e\uff1a DELETE FROM tb_name WHERE conditions;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1adelete from student;<\/div>\n
\u00a0\u00a0 \u00a0\u00a0 \u00a0 \u793a\u4f8b\uff1a delete from student where id = 3;\u00a0 \u00a0(delete\u540e\u9762\u4e0d\u80fd\u5e26*)<\/div>\n
\u8fd9\u4e2a\u53ea\u80fd\u5220\u9664\u6574\u884c\uff0c\u5982\u679c\u8981\u5220\u9664\u67d0\u4e2a\u5b57\u6bb5\u7684\u4e00\u4e2a\u503c\uff0c\u662f\u5426\u8981\u7528\u5230\u4fee\u6539\uff1f<\/div>\n
\u6ce8\u610f\uff1a\u4e00\u5b9a\u8981\u5199where\u6761\u4ef6\uff0c\u5426\u5219\u5c06\u5220\u9664\u8868\u4e2d\u5168\u90e8\u7684\u6570\u636e\u3002<\/div>\n
<\/div>\n
<\/div>\n
\u5b57\u7b26\u7c7b\u578b\u4e3b\u8981\u638c\u63e1char\u00a0\u548cvarchar<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

\u6ce8\u610f\u4e8b\u9879\uff1a \u00a0\u00a0 \u00a0\u00a0 \u00a0 \u4e0d\u4e25\u683c\u533a\u5206\u5927\u5c0f\u5199\uff0c\u9ed8\u8ba4\u5927\u5199\u4e3a\u7a0b\u5e8f\u4ee3\u7801\uff0c\u5c0f\u5199\u4e3a\u7a0b\u5e8f\u5458\u5199\u7684\u4ee3\u7801\u3002 \u00a0\u00a0 \u00a0\u00a0 \u00a0 \u6bcf\u4e2a […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,23],"tags":[],"class_list":["post-735","post","type-post","status-publish","format-standard","hentry","category-java","category-python_note"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/735","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=735"}],"version-history":[{"count":1,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/735\/revisions"}],"predecessor-version":[{"id":736,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=\/wp\/v2\/posts\/735\/revisions\/736"}],"wp:attachment":[{"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=735"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=735"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/notes.coremix.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=735"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}