\u672c\u6587\u662f \u300aPHP\u548cMySQL Web\u5f00\u53d1\u300b \u7b2c8\u30019\u300110\u7ae0\u9605\u8bfb\u7b14\u8bb0\uff0c\u4e3b\u8981\u4ecb\u7ecd MySQL \u5165\u95e8\u57fa\u7840\u77e5\u8bc6\uff01 \u4e00\u3001\u6570\u636e\u5e93\u57fa\u7840 1.1\u3001\u6570\u636e\u5e93\u6982\u5ff5 \u8868\uff1a\u5173\u7cfb\u6570\u636e\u5e93\u7531\u5173\u7cfb\u7ec4\u6210\uff0c\u5173\u7cfb\u901a\u5e38\u79f0\u4e3a\u8868\u3002 \u5217\uff1a\u8868\u4e2d\u7684\u6bcf\u4e00\u5217\u90fd\u6709\u4e00\u4e2a\u540d\u79f0\u548c\u6570\u636e\u7c7b\u578b\uff0c\u5217\u4e5f\u53eb\u201c\u57df\u201d\u6216\u201c\u5c5e\u6027\u201d\u3002 \u884c\uff1a\u5173\u7cfb\u7c7b\u578b\u6bcf\u4e00\u884c\u5177\u6709\u76f8\u540c\u7684\u5c5e\u6027\uff0c\u884c\u4e5f\u79f0\u201c\u8bb0\u5f55\u201d\u3002 \u5065\uff1a\u8868\u4e2d\u6807\u5fd7\u5217\u79f0\u4e3a\u5065\u6216\u4e3b\u952e\uff0c\u53ef\u7528\u6765\u505a\u8868\u683c\u95f4\u7684\u5f15\u7528\u3002 \u5916\u952e\uff1a\u4e3b\u952e\u51fa\u73b0\u5728\u53e6\u4e00\u4e2a\u8868\u65f6\uff0c\u8be5\u4e3b\u952e\u79f0\u4e3a\u5916\u952e\u3002 1.2\u3001\u6570\u636e\u5e93\u8868\u95f4\u5173\u7cfb \u4e00\u5bf9\u4e00\uff1a\u4e3b\u952e-\u4e3b\u952e \u4e00\u5bf9\u591a\uff1a\u4e3b\u952e–\u5916\u952e \u591a\u5bf9\u591a\uff1a\u4e3b\u952e1–\u5916\u952e1\u5916\u952e2–\u4e3b\u952e2 1.3\u3001\u767b\u5f55\u8fde\u63a5\u5230 MySQL 1 2 \u8bed\u6cd5\uff1amysql -h\u4e3b\u673a\u5730\u5740 -u\u7528\u6237\u540d \uff0dp\u7528\u6237\u5bc6\u7801 \u5b9e\u4f8b\uff1amysql -h127.0.0.1 -uroot -p123456 \u25a0-h\u4e3b\u673a\u5730\u5740\uff0c\u53ef\u4ee5\u6709\u7a7a\u683c\uff0c\u82e5\u7701\u7565\u5219\u4f7f\u7528localhost\u3002 \u25a0-u\u7528\u6237\u540d\uff0c\u53ef\u4ee5\u6709\u7a7a\u683c\uff0c\u82e5\u7701\u7565\u5219\u4f7f\u7528\u767b\u5f55\u64cd\u4f5c\u7cfb\u7edf\u7684\u7528\u6237\u540d\u3002 \u25a0-p\u7528\u6237\u5bc6\u7801\uff0c\u5fc5\u987b\u76f8\u8fde\u4e0d\u80fd\u6709\u7a7a\u683c\u3002 \u25a0MySQL \u6bcf\u4e2a\u547d\u4ee4\u7528\u5206\u597d\u9694\u5f00\u3002 \u25a0SQL \u8bed\u53e5\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff0c\u6570\u636e\u5e93\u548c\u8868\u540d\u79f0\u5219\u533a\u5206\u5927\u5c0f\u5199\u3002 \u4e8c\u3001MySQL \u7528\u6237\u4e0e\u6743\u9650 2.1\u3001MySQL \u6743\u9650\u4ecb\u7ecd MySQL \u6743\u9650\u5206\u56db\u4e2a\u7ea7\u522b\uff0c\u5206\u522b\u662f\u5168\u5c40\u3001\u6570\u636e\u5e93\u3001\u8868\u3001\u5217\u3002\u6bcf\u4e2a\u7ea7\u522b\u90fd\u6709\u4e09\u79cd\u7c7b\u578b\u6743\u9650\uff1a1\u3001\u7528\u6237\u6743\u9650\uff0c2\u3001\u7ba1\u7406\u5458\u6743\u9650\uff0c3\u3001\u7279\u6b8a\u6743\u9650\u3002 \u7528\u6237\u6743\u9650\uff1a1\uff09select\uff08\u67e5\u8be2\uff09\uff0c2\uff09insert\uff08\u63d2\u5165\uff09\uff0c3\uff09update\uff08\u4fee\u6539\uff09\uff0c4\uff09delete\uff08\u5220\u9664\u8868\uff09\uff0c5\uff09index\uff08\u7d22\u5f15\uff09\uff0c6\uff09alter\uff08\u53d8\u66f4\u8868\u7ed3\u6784\uff09\uff0c7\uff09create\uff08\u521b\u5efa\u6570\u636e\u5e93\uff09\uff0c8\uff09drop\uff08\u5220\u9664\u5e93\u6216\u8868\uff09 \u7ba1\u7406\u5458\u6743\u9650\uff1a1\uff09create temporary tables\uff0c2\uff09file\uff0c3\uff09lock tables\uff0c4\uff09process\uff0c5\uff09reload\uff0c6\uff09replication client\uff0c7\uff09replication slave\uff0c8\uff09show databases\uff0c9\uff09shutdown\uff0c10\uff09super \u7279\u6b8a\u6743\u9650\uff1a1\uff09 all\uff08\u7528\u6237+\u7ba1\u7406\u6743\u9650\uff09\uff0c2\uff09usage\uff08\u4e0d\u6388\u4e88\u6743\u9650\uff09 2.2\u3001\u521b\u5efaMySQL\u7528\u6237\uff08GRANT\u547d\u4ee4\uff09 1 2 3 4 5 GRANT \u6743\u9650 [\u5217] ON \u6570\u636e\u5e93.\u8868 TO \u7528\u6237\u540d@\u4e3b\u673a [IDENTIFIED BY ‘password’] [require ssl_option] [WITH [GRANT OPTION | limit_options] ] 1) *.* \u6307\u6240\u6709\u6570\u636e\u5e93\u548c\u6240\u6709\u8868\u3002 2) * \u6307\u9009\u4e2d\u7684\u6570\u636e\u5e93\u548c\u6240\u6709\u8868\u3002 3) dbname.* \u6307\u9009\u5b9a\u6570\u636e\u5e93\u4e2d\u7684\u6240\u6709\u8868\u3002 4) “%” \u662f\u9ed8\u8ba4\u503c\uff0c\u6307\u6240\u6709\u4e3b\u673a\u3002 5) with grant option \u8868\u793a\u5141\u8bb8\u7528\u6237\u5411\u88ab\u4eba\u6388\u4e88\u81ea\u5df1\u62e5\u6709\u7684\u6743\u9650\u3002 limit_options \u53ef\u7528\u9009\u9879\u6709\uff1a 1 2 3 max_queries_per_hour n max_updates_per_hour n max_connections_per_hour n 2.3\u3001\u64a4\u9500\u6743\u9650REVOKE\u547d\u4ee4 1 2 3 REVOKE \u6743\u9650 [,GRANT OPTION] ON \u6570\u636e\u5e93.\u8868 FROM \u7528\u6237\u540d@\u4e3b\u673a \u6ce8\uff1a\u64a4\u9500grant option\u6743\u9650\uff0c\u53ef\u4e0d\u6307\u5b9a\u6570\u636e\u5e93\u548c\u8868\u540d\u3002 \u4e09\u3001MySQL \u6570\u636e\u5e93\u548c\u8868 \u521b\u5efa\u6570\u636e\u5e93\uff1acreate database \u6570\u636e\u5e93\u540d; \u4f7f\u7528\u6570\u636e\u5e93\uff1ause \u6570\u636e\u5e93\u540d; \u5220\u9664\u6570\u636e\u5e93\uff1adrop database \u6570\u636e\u5e93\u540d\u79f0; \u521b\u5efa\u6570\u636e\u5e93\u8868\uff1acreate table \u6570\u636e\u8868\u540d\u79f0 (\u5217\u540d\u79f0); \u5220\u9664\u6570\u636e\u5e93\u8868\uff1adrop table \u8868\u540d\u79f0\uff1b 1 2 3 4 5 6 CREATE TABLE customers (customersid INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, name CHAR(10) NOT NULL, Amount FLOAT(6,2) NOT NULL, DATE DATE NOT NULL ); \u6574\u5f62\uff1a1) smallint\u30012) int\u30013)bigint \u6d6e\u70b9\u578b\uff1a1) float(\u957f\u5ea6,\u5c0f\u6570\u4f4d\u6570)\u30012) double(\u957f\u5ea6,\u5c0f\u6570\u4f4d\u6570) \u65f6\u95f4\u65e5\u671f\uff1a1) date (YYYY-MM-DD)\u30012) time (HH:MM:SS)\u30013) datetime (YYYY-MM-DD HH:MM:SS)\u30013) year[(2|4)] (11\u62162011) \u5b57\u7b26\u4e32\uff1a\u5e38\u7528\u7684\u6709char\uff08\u56fa\u5b9a\u5b57\u7b26\u6570\uff09\u548ctext(\u957f\u6587\u672c\uff09 unsigned\uff1a\u8868\u793a\u53ea\u80fd\u4e3a0\u6216\u6b63\u6570 not null\uff1a\u8868\u793a\u5fc5\u987b\u6709\u4e00\u4e2a\u503c\uff0c\u4f46\u53ef\u4ee5\u4e3a\u7a7a(null) auto_increment\uff1a\u8868\u793a\u81ea\u52a8\u63d2\u5165\u4e00\u4e2a\u552f\u4e00\u6807\u8bc6\u503c primary key\uff1a\u4e3b\u952e \u56db\u3001INSERT \u63d2\u5165\u6570\u636e \u65b9\u6cd5\u4e00 1 2 INSERT \u8868 [(\u52171,\u52172)] VALUES (‘\u503c1′,’\u503c2’); INSERT \u8868 [(\u52171,\u52172)] VALUES (‘\u503c1′,’\u503c2’)\uff0c(‘\u503c1′,’\u503c2′); \uff08\u63d2\u5165\u591a\u884c\u8bb0\u5f55\uff09 \u65b9\u6cd5\u4e8c 1 INSERT \u8868 SET \u52171=’\u503c1′,\u52172=’\u503c2′,\u52173=’\u503c3′; \u6ce8\uff1a\u6570\u5b57\u548c\u65e5\u671f\u4e0d\u9700\u8981\u5f15\u53f7 \u4e94\u3001SELECT \u67e5\u8be2\u8bed\u53e5 5.1 \u5355\u8868\u67e5\u8be2 1 SELECT \u52171,\u52172\u3000FROM \u8868 \u6ce8\uff1a* \u6307\u6240\u6709\u5217 5.2 \u6ee1\u8db3\u7279\u5b9a\u6761\u4ef6\u67e5\u8be2 1 SELECT * FROM orders WHERE customerid=1; \u6bd4\u8f83\u8fd0\u7b97\u7b26\uff1a=,>,=, 50; \u7ed9\u51fa\u6bcf\u4e2a\u987e\u5ba2\u7684\u5e73\u5747\u503c\uff0c\u800c\u4e0d\u662f\u5168\u90e8\u987e\u5ba2\u5e73\u5747\u503c\u3002 having\u7c7b\u4f3c\u4e8ewhere,\u4f46having\u53ea\u9002\u7528\u4e8e\u5408\u8ba1\u4e0e\u5206\u7ec4\u3002 5.9 \u9009\u62e9\u8981\u8fd4\u56de\u7684\u884c 1 2 3 SELECT name FROM customers LIMIT 0,3; limit \u5e26\u4e24\u4e2a\u53c2\u6570,\u8d77\u59cb\u884c\u53f7\u548c\u8fd4\u56de\u884c\u6570\u3002 \u884c\u53f7\u662f\u5df20\u5f00\u59cb\u7d22\u5f15\u7684 \u516d\u3001\u4f7f\u7528\u5b50\u67e5\u8be2 6.1 \u57fa\u672c\u5b50\u67e5\u8be2 \u5b9e\u4f8b\uff1a\u67e5\u627e\u91d1\u989d\u6700\u5927\u7684\u8ba2\u5355 1 2 3 SELECT customerid,amount FROM orders WHERE amount=(SELECT MAX(amount) FROM orders); \u8fc7\u7a0b:\u5148\u67e5\u6700\u5927\u91d1\u989d\u662f\u591a\u5c11,\u7136\u540e\u67e5\u8be5\u91d1\u989d\u7684\u8ba2\u5355\u4fe1\u606f\u3002 “=”\u662f\u6bd4\u8f83\u64cd\u4f5c\u7b26\uff0c”=”\u53f3\u8fb9\u53ef\u4ee5\u63d2\u5165\u5b50\u67e5\u8be2\u64cd\u4f5c\u7b26\u3002 1 2 3 FROM orders ORDER BY amount DESC LIMIT 1; 6.2 \u5b50\u67e5\u8be2\u64cd\u4f5c\u7b26 ANY (SOME) \u67e5\u8be2t1\u8868c1\u5217\uff0c\u4f46\u8be5\u5217\u5fc5\u987b\u5927\u4e8et2\u8868c1\u5217\u4e2d\u4efb\u610f\u4e00\u4e2a\u503c\u3002 1 2 SELECT c1 FROM t1 WHERE c1 > any (SELECT c1 FROM t2); IN (=any) \u67e5\u8be2t1\u8868c1\u5217\uff0c\u4f46\u8be5\u5217\u5fc5\u987b\u7b49\u4e8et2\u8868c1\u5217\u4e2d\u4efb\u610f\u4e00\u4e2a\u503c\u3002 1 2 SELECT c1 FROM t1 WHERE c1 IN (SELECT c1 FROM t2); All \u67e5\u8be2t1\u8868c1\u5217\uff0c\u4f46\u8be5\u5217\u5fc5\u987b\u5927\u4e8et2\u8868c1\u5217\u4e2d\u6240\u6709\u503c\u3002 1 2 SELECT c1 FROM t1 WHERE c1 > ALL (SELECT c1 FROM t2); 6.3 \u5173\u8054\u5b50\u67e5\u8be2 1 2 books(ISBN,author,title,price) order_items(orderid,isbn,quantily) 1 2 3 4 SELECT isbn ,title FROM books WHERE NOT EXISTS (SELECT * FROM order_items WHERE order_items.isbn=books.isbn) \u9996\u5148\u67e5\u8be2books\u8868\u4e2d\u7684isbn\u548ctitle\uff08\u6240\u6709\u4e66\uff09 \u7136\u540e\u5c06\u67e5\u8be2\u7ed3\u679c\u4f20\u5165\u5b50\u67e5\u8be2\uff08\u62ec\u53f7\u5185\u8bed\u53e5\uff09 \u63a5\u7740\u6267\u884c\u5b50\u67e5\u8be2\uff08\u5df2\u88ab\u8ba2\u8d2d\u7684\u4e66\uff09 \u6700\u540e\u5c06\u5b50\u67e5\u8be2\u7684\u7ed3\u679c\u8fd4\u56de\u4e3b\u67e5\u8be2\uff08\u6ca1\u6709\u88ab\u8ba2\u8d2d\u7684\u4e66\uff09 exists \u662f\u5b50\u67e5\u8be2\u7092\u4f5c\u7b26\uff0c\u53ea\u80fd\u7528\u5728\u5173\u8054\u5b50\u67e5\u8be2\u4e2d\u3002 6.4 \u884c\u5b50\u67e5\u8be2 \u5b9e\u4f8b\uff1a\u5728\u4e00\u4e2a\u8868\u4e2d\u67e5\u627e\u5b58\u5728\u4e8e\u53e6\u4e00\u4e2a\u8868\u7684\u884c 1 2 3 SELECT c1,c2,c3 FROM t1 WHERE (c1,c2,c3) IN (SELECT c1,c2,c3 FROM t2); 6.5 \u4f7f\u7528\u5b50\u67e5\u8be2\u4f5c\u4e3a\u4e34\u65f6\u8868 \u5c06\u5b50\u67e5\u8be2\u653e\u5728FROM\u5b50\u53e5\u4e2d\uff0c\u5fc5\u987b\u4e3a\u5b50\u67e5\u8be2\u7684\u7ed3\u679c\u5b9a\u4e49\u4e00\u4e2a\u522b\u540d\u3002 1 2 SELECT * FROM (SELECT customerid,name FROM customers WHERE city=’Box Hill’) AS box_hill_customers; \u4e03\u3001\u66f4\u65b0\u6570\u636e\u5e93\u8bb0\u5f55 1 2 3 4 5 UPDATE \u8868\u540d SET \u52171=\u8868\u8fbe\u5f0f1,\u52172=\u8868\u8fbe\u5f0f2,… WHERE \u6761\u4ef6 ORDER BY \u6761\u4ef6 LIMIT x,x \u5b9e\u4f8b:\u4fee\u6539\u6240\u6709\u884c\u8bb0\u5f55 1 2 UPDATE books SET price=price*1.1; \u5b9e\u4f8b2:\u4fee\u6539\u67d0\u4e00\u884c\u8bb0\u5f55 1 2 3 UPDATE customers SET address=’xxx’ WHERE customerid=4; \u516b\u3001\u4fee\u6539\u8868\u7ed3\u6784 \u5b9e\u4f8b1\uff1a\u4fee\u6539\u5217\u6570\u636e\u7c7b\u578b 1 2 ALTER TABLE customers MODIFY name CHAR(70) NOT NULL; \u5b9e\u4f8b2\uff1a\u589e\u52a0\u4e00\u5217 1 2 ALTER TABLE orders ADD tax FLOAT(6,2) after amount; \u5b9e\u4f8b3\uff1a\u5220\u9664\u4e00\u5217 1 2 ALTER TABLE orders DROP tax; \u4e5d\u3001\u5220\u9664\u6570\u636e\u5e93\u8bb0\u5f55 1 2 3 4 DELETE FROM \u8868\u540d WHERE \u6761\u4ef6 ORDER BY \u6761\u4ef6 LIMIT x,x \u5b9e\u4f8b1\uff1a\u5220\u9664\u6240\u6709\u884c 1 DELETE FROM customers; \u5b9e\u4f8b2\uff1a\u5220\u9664\u67d0\u4e00\u884c 1 2<\/p>\n","protected":false},"excerpt":{"rendered":"

\u672c\u6587\u662f \u300aPHP\u548cMySQL Web\u5f00\u53d1\u300b \u7b2c8\u30019\u300110\u7ae0\u9605\u8bfb\u7b14\u8bb0...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-277","post","type-post","status-publish","format-standard","hentry","category-6"],"_links":{"self":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/277","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=277"}],"version-history":[{"count":2,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/277\/revisions"}],"predecessor-version":[{"id":279,"href":"https:\/\/www.01xj.net\/index.php?rest_route=\/wp\/v2\/posts\/277\/revisions\/279"}],"wp:attachment":[{"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=277"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=277"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.01xj.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=277"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}