{"id":420,"date":"2024-03-24T19:11:41","date_gmt":"2024-03-24T11:11:41","guid":{"rendered":"http:\/\/www.madbull.site\/?p=420"},"modified":"2025-02-25T11:05:07","modified_gmt":"2025-02-25T03:05:07","slug":"mysql%e5%b8%b8%e7%94%a8%e6%8c%87%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/www.madbull.site\/?p=420","title":{"rendered":"MySql\u5e38\u7528\u6307\u4ee4"},"content":{"rendered":"\n
\n

1 show databases ; <\/strong><\/p>\n\n\n\n

\u5217\u51fa\u6240\u6709\u7684\u6570\u636e\u5e93\u540d\u5b57<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

2 show tables ;<\/strong><\/p>\n\n\n\n

\u5217\u51fa\u5f53\u524d\u5e93\u4e0b\u6240\u6709\u7684\u8868\u540d\u5b57<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

3 show create table xxx ;<\/strong><\/p>\n\n\n\n

\u663e\u793a\u8868xxx\u7684\u5efa\u8868\u8bed\u53e5<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

4 create role rrr, ooo ; <\/strong><\/p>\n\n\n\n

\u521b\u5efa \u89d2\u8272rrr \u548c \u89d2\u8272ooo \uff1b<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

5 create user ‘uuu’@’localhost’ identified by ‘passwd’ ;<\/strong><\/p>\n\n\n\n

\u521b\u5efa\u7528\u6237 uuu \u5728 localhost \u7528\u5bc6\u7801 passwd \u767b\u5f55<\/p>\n\n\n\n

CREATE USER ‘TTT’@’%’ IDENTIFIED BY ‘passwd ‘;<\/strong><\/p>\n\n\n\n

\u521b\u5efa\u7528\u6237 TTT \u5728 \u4efb\u610f\u4e3b\u673a \u7528\u5bc6\u7801 passwd \u767b\u5f55<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

6 show grants for ‘user’ ;<\/strong><\/p>\n\n\n\n

\u663e\u793a\u7528\u6237 \u2019user’ \u7684\u6388\u6743\u60c5\u51b5<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

7 select current_user() ;<\/strong><\/p>\n\n\n\n

\u67e5\u8be2\u5f53\u524d\u7528\u6237<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

8 show variables like ‘a%’ ;<\/strong><\/p>\n\n\n\n

\u663e\u793a ‘a%’ \u6a21\u5f0f\u5339\u914d\u7684\u914d\u7f6e\u53c2\u6570<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

9 show privileges ;<\/strong><\/p>\n\n\n\n

\u663e\u793amysql\u670d\u52a1\u652f\u6301\u7684\u7cfb\u7edf\u6743\u9650<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

10 show engine innodb status ;<\/strong><\/p>\n\n\n\n

\u663e\u793a <\/strong>innodb \u5f15\u64ce\u7684\u72b6\u6001<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

11 source xxx.sql ;<\/strong><\/p>\n\n\n\n

\u6267\u884cxxx.sql\u6587\u4ef6\u4e2d\u7684sql\u8bed\u53e5\uff1b<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

12 select * from ttt [ where aaa=’aaa’ … ] into outfile ‘ttt.csv’ FIELDS TERMINATED BY ‘,’ OPTIONALLY ENCLOSED BY ‘”‘ LINES TERMINATED BY ‘\\r\\n’ ;<\/strong><\/p>\n\n\n\n

\u67e5\u8be2 ttt \u8868\uff0c\u5e76\u628a\u7ed3\u679c\u5199\u5230 ttt.csv \u6587\u4ef6\uff0c\u4ee5 ‘,’ \u4f5c\u4e3a\u5206\u5272\u7b26\uff0c\u4ee5 ‘\\r\\n’ \u4f5c\u4e3a\u6362\u884c\uff0c\u4ee5 ” \u4f5c\u4e3a\u6bcf\u4e00\u9879\u7684\u7ed3\u675f\u7b26\u53f7\u3002<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

13 alter table ttt rename rrr ;<\/strong><\/p>\n\n\n\n

\u628a\u8868ttt\u91cd\u547d\u540d\u4e3arrr<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

14 alter table rrr add sss varchar(10) not null default “ddfftt” after ccc;<\/strong><\/p>\n\n\n\n

\u7ed9\u8868 rrr \u5728ccc\u540e\u8fb9\u589e\u52a0 sss \u5217<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

15 alter table rrr modify column sss varchar(5) comment “xxxxx” ;<\/strong><\/p>\n\n\n\n

\u4fee\u6539 rrr \u8868 sss \u5217\u7c7b\u578b\u4e3a varchar(5)\uff0c\u5907\u6ce8\u6539\u4e3a xxxxx<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

16 alter table rrr add index iii(bb) ;<\/strong><\/p>\n\n\n\n

\u4fee\u6539\u8868 rrr \u589e\u52a0\u7d22\u5f15\uff0c\u4ee5bbb\u5efa\u7acbiii\u7d22\u5f15\u3002<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

17 alter table rrr del column ccc ;<\/strong><\/p>\n\n\n\n

\u4fee\u6539\u8868 rrr \u5220\u9664 ccc \u5b57\u6bb5\u3002<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

18 select now() ; \u6216\u8005 select curdate() ;<\/strong><\/p>\n\n\n\n

\u67e5\u8be2\u5f53\u524d\u65e5\u671f\u6216\u8005\u4e8b\u4ef6<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

19 status<\/strong><\/p>\n\n\n\n

\u67e5\u770b\u5f53\u524d\u8fde\u63a5\u7684\u72b6\u6001<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

20 \u63d2\u5165\u4e00\u6761\u6570\u636e\uff0c\u5982\u679c\u6709\u4e3b\u952e\u51b2\u7a81\uff0c\u5219\u66f4\u65b0\u8fd9\u6761\u6570\u636e\u7684\u67d0\u4e9b\u5b57\u6bb5<\/strong><\/p>\n\n\n\n

insert into table_name( column1, column2,\u2026)
values( value1, value2, \u2026)
on duplicate key update
column1 = value1, column2 = value2, \u2026<\/p>\n\n\n\n

<\/div>\n<\/div>\n\n\n\n
\n

21 \u628addd\u5e93\u4e2d\u6240\u6709\u8868\u7684\u6743\u9650\u90fd\u7ed9\u5230 \u4efb\u610f\u4e3b\u673a\u767b\u5f55\u7684 ttt <\/strong><\/p>\n\n\n\n

GRANT ALL PRIVILEGES ON ddd.* TO ‘ttt’@’%’;<\/p>\n\n\n\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

1 show databases ;
\n\u5217\u51fa\u6240\u6709\u7684\u6570\u636e\u5e93\u540d\u5b57
\n2 show tables ;
\n\u5217\u51fa\u5f53\u524d\u5e93\u4e0b\u6240\u6709\u7684\u8868\u540d\u5b57
\n3 show create table xxx ;
\n\u663e\u793a\u8868xxx\u7684\u5efa\u8868\u8bed\u53e5<\/p>\n","protected":false},"author":1,"featured_media":53,"comment_status":"open","ping_status":"open","sticky":false,"template":"single-with-sidebar","format":"standard","meta":{"footnotes":""},"categories":[116,5],"tags":[122,91,123,121,19],"class_list":["post-420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mysql","category-database","tag-create","tag-mysql","tag-role","tag-121","tag-19"],"_links":{"self":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=420"}],"version-history":[{"count":10,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions"}],"predecessor-version":[{"id":2099,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions\/2099"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=\/wp\/v2\/media\/53"}],"wp:attachment":[{"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madbull.site\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}