— \u5b58\u50a8\u4f8b\u7a0b;
\n1.\u5b58\u50a8\u4f8b\u7a0b\u662f\u5b58\u50a8\u5728\u670d\u52a1\u5668\u4e2d\u7684\u4e00\u7ec4\u6307\u5b9a\u7684SQL\u8bed\u53e5:
\n 1.\u5ba2\u6237\u673a\u65e0\u9700\u4e0d\u65ad\u91cd\u65b0\u53d1\u51fa\u5355\u4e2a\u8bed\u53e5,\u800c\u53ef\u4ee5\u6539\u4e3a\u5f15\u7528\u5b58\u50a8\u4f8b\u7a0b;
\n2.\u5b58\u50a8\u4f8b\u7a0b\u7c7b\u578b:
\n 1.\u5b58\u50a8\u8fc7\u7a0b:\u901a\u8fc7CALL\u8bed\u53e5\u8c03\u7528\u8fc7\u7a0b,\u8fd9\u4e9b\u8fc7\u7a0b\u53ef\u4ee5\u4f7f\u7528\u8f93\u51fa\u53d8\u91cf\u6216\u7ed3\u679c\u96c6\u4f20\u56de\u503c;
\n 2.\u5b58\u50a8\u51fd\u6570:\u5728\u8bed\u53e5\u4e2d\u8c03\u7528\u51fd\u6570,\u8fd9\u4e9b\u51fd\u6570\u53ef\u8fd4\u56de\u6807\u91cf\u503c;<\/p>\n
— \u5b58\u50a8\u4f8b\u7a0b\u7684\u4f7f\u7528;
\n1.\u96c6\u4e2d\u5f0f\u5ba2\u6237\u673a\u529f\u80fd:\u901a\u8fc7\u5b58\u50a8\u4f8b\u7a0b,\u60a8\u53ef\u4ee5\u5728\u6570\u636e\u5e93\u4e2d\u96c6\u4e2d\u521b\u5efa\u4e00\u4e2a\u8bed\u53e5\u6216\u4e00\u7cfb\u5217\u8bed\u53e5,\u4ee5\u4f9b\u4f7f\u7528\u4e0d\u540c\u7f16\u7a0b\u8bed
\n\u8a00\u7f16\u5199\u6216\u5728\u4e0d\u540c\u5e73\u53f0\u4e0a\u8fd0\u884c\u7684\u591a\u4e2a\u5ba2\u6237\u673a\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528;
\n2.\u5b89\u5168\u6027:
\n 1.\u5b58\u50a8\u4f8b\u7a0b\u4e3a\u9700\u8981\u6700\u9ad8\u5b89\u5168\u7ea7\u522b\u7684\u5e94\u7528\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u4e00\u4e2a\u89e3\u51b3\u65b9\u6cd5;
\n 2.\u4f8b\u5982,\u94f6\u884c\u9488\u5bf9\u6240\u6709\u5e38\u7528\u64cd\u4f5c\u5747\u4f7f\u7528\u5b58\u50a8\u8fc7\u7a0b\u548c\u51fd\u6570,\u8fd9\u63d0\u4f9b\u4e86\u4e00\u81f4,\u5b89\u5168\u7684\u73af\u5883;
\n 3.\u53ef\u5bf9\u4f8b\u7a0b\u8fdb\u884c\u7f16\u7801,\u4ee5\u786e\u4fdd\u6b63\u786e\u8bb0\u5f55\u4e86\u6bcf\u4e2a\u64cd\u4f5c,\u5728\u6b64\u7c7b\u8bbe\u7f6e\u4e2d,\u5e94\u7528\u7a0b\u5e8f\u548c\u7528\u6237\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u6570\u636e\u5e93\u8868,\u53ea\u80fd\u6267\u884c\u7279\u5b9a\u7684\u5b58\u50a8\u4f8b\u7a0b;
\n 4.\u5728Oracle\u4e2d\u8fd8\u53ef\u4ee5\u9488\u5bf9\u5b58\u50a8\u8fc7\u7a0b\u8fdb\u884c\u52a0\u5bc6;
\n3.\u6027\u80fd\u6539\u8fdb:
\n 1.\u5ba2\u6237\u673a\u6309\u540d\u79f0\u8c03\u7528\u5b58\u50a8\u4f8b\u7a0b,\u800c\u4e0d\u53d1\u9001\u4f8b\u7a0b\u4e2d\u6240\u5305\u542b\u7684\u6574\u7ec4\u8bed\u53e5;
\n 2.\u56e0\u4e3a\u670d\u52a1\u5668\u548c\u5ba2\u6237\u673a\u4e4b\u95f4\u9700\u8981\u53d1\u9001\u7684\u4fe1\u606f\u53d8\u5c11\u4e86,\u6240\u4ee5\u5b58\u50a8\u4f8b\u7a0b\u53ef\u63d0\u5347\u6027\u80fd;
\n 3.\u54ea\u5c82\u4e0d\u662f\u6570\u636e\u5e93\u670d\u52a1\u5668\u7aef\u7684\u538b\u529b\u53d8\u91cd\u4e86?
\n4.\u51fd\u6570\u5e93:\u901a\u8fc7\u5b58\u50a8\u4f8b\u7a0b,\u53ef\u4ee5\u5728\u6570\u636e\u5e93\u670d\u52a1\u5668\u4e2d\u4f7f\u7528\u51fd\u6570\u5e93,\u8fd9\u4e9b\u5e93\u7528\u4f5c\u6570\u636e\u5e93\u7684API;<\/p>\n
— \u5b58\u50a8\u4f8b\u7a0b:\u95ee\u9898;
\n1.\u589e\u52a0\u4e86\u670d\u52a1\u5668\u8d1f\u8f7d:
\n 1.\u5728\u6570\u636e\u5e93\u81ea\u8eab\u4e2d\u6267\u884c\u5b58\u50a8\u4f8b\u7a0b\u53ef\u589e\u52a0\u670d\u52a1\u5668\u8d1f\u8f7d\u5e76\u964d\u4f4e\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd;
\n 2.\u53ef\u4ee5\u8fd0\u884c\u6d4b\u8bd5\u5e76\u8fd0\u7528\u5e38\u8bc6\u6765\u786e\u4fdd\u5728\u6570\u636e\u5e93\u672c\u8eab\u4e2d\u5305\u542b\u903b\u8f91\u6240\u5e26\u6765\u7684\u65b9\u4fbf\u6bd4\u53ef\u80fd\u5f15\u53d1\u7684\u6027\u80fd\u95ee\u9898\u66f4\u4e3a\u663e\u8457;
\n2.\u5f00\u53d1\u5de5\u5177\u6709\u9650:
\n 1.MySQL\u4e2d\u652f\u6301\u5b58\u50a8\u4f8b\u7a0b\u7684\u5f00\u53d1\u5de5\u5177\u4e0d\u50cf\u5728\u66f4\u901a\u7528\u7684\u7f16\u7a0b\u8bed\u8a00\u4e2d\u90a3\u6837\u6210\u719f\u548c\u660e\u786e;
\n 2.\u6b64\u5c40\u9650\u6027\u4f1a\u4f7f\u5b58\u50a8\u4f8b\u7a0b\u7684\u7f16\u5199\u548c\u8c03\u8bd5\u8fc7\u7a0b\u66f4\u52a0\u56f0\u96be,\u5728\u51b3\u7b56\u8fc7\u7a0b\u4e2d\u9700\u8981\u52a0\u4ee5\u8003\u8651;
\n3.\u8bed\u8a00\u529f\u80fd\u548c\u901f\u5ea6\u6709\u9650:
\n 1.\u867d\u7136\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\u5728\u6570\u636e\u5e93\u672c\u8eab\u4e2d\u5305\u542b\u903b\u8f91\u5177\u6709\u5f88\u5927\u7684\u4f18\u52bf,\u4f46\u662f\u4e0e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u76f8\u6bd4,\u5728\u53ef\u5b9e\u73b0\u7684\u5185\u5bb9\u65b9\u9762\u4ecd\u6709\u5c40\u9650;
\n 2.\u5b58\u50a8\u4f8b\u7a0b\u5728\u6570\u636e\u5e93\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c,\u4e0e\u5ba2\u6237\u673a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u4f8b\u7a0b\u76f8\u6bd4,\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u6027\u80fd\u8f83\u597d,\u4f46\u662f\u5ba2\u6237\u673a\u5e94\u7528\u7a0b\u5e8f\u8bed\u8a00\u53ef\u80fd\u5177\u6709\u66f4\u5f3a\u5927,\u66f4\u901a\u7528\u7684\u5904\u7406,\u96c6\u6210\u6216\u5176\u4ed6\u5e93\u529f\u80fd;
\n4.\u8c03\u8bd5\u548c\u6982\u8981\u5206\u6790\u529f\u80fd\u6709\u9650;<\/p>\n
— \u6267\u884c\u5b58\u50a8\u4f8b\u7a0b; — \u5b58\u50a8\u8fc7\u7a0b:\u793a\u4f8b; mysql> DELIMITER $$ mysql> DELIMITER $$ 1.\u590d\u5408\u8bed\u53e5: — \u5b58\u50a8\u51fd\u6570:\u793a\u4f8b; 1.RETURNS\u5b50\u53e5:\u7528\u4e8e\u786e\u5b9a\u6b64\u51fd\u6570\u8981\u8fd4\u56de\u7684\u503c\u7684\u7c7b\u578b; — \u68c0\u67e5\u5b58\u50a8\u4f8b\u7a0b; — \u5b58\u50a8\u4f8b\u7a0b\u548c\u6267\u884c\u5b89\u5168\u6027; — \u6d4b\u9a8c; — \u89e6\u53d1\u5668; — \u521b\u5efa\u89e6\u53d1\u5668; 1.trigger_name\u662f\u4e3a\u89e6\u53d1\u5668\u6307\u5b9a\u7684\u540d\u79f0; \u8865\u5145:\u6a21\u62df\u7269\u5316\u89c6\u56fe\u7684\u4f8b\u5b50; — \u89e6\u53d1\u5668\u4e8b\u4ef6; — \u89e6\u53d1\u5668\u9519\u8bef\u5904\u7406; — \u68c0\u67e5\u89e6\u53d1\u5668; — \u5220\u9664\u89e6\u53d1\u5668; — \u5bf9\u89e6\u53d1\u5668\u7684\u9650\u5236; — \u89e6\u53d1\u5668\u7279\u6743; — \u6d4b\u9a8c; — \u4e8b\u4ef6; — \u8c03\u5ea6\u8868; \u8865\u5145: \u8865\u5145: — \u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u548c\u7279\u6743; — \u4e8b\u4ef6\u6267\u884c\u7279\u6743; — \u68c0\u67e5\u4e8b\u4ef6; — \u5220\u9664\u4e8b\u4ef6; — \u6d4b\u9a8c; — SIGNAL\u548cRESIGNAL; — \u8bfe\u540e\u7ec3\u4e60;<\/p>\n \u8865\u5145:\u52a8\u6001\u6267\u884csql\u8bed\u53e5: — \u5b58\u50a8\u4f8b\u7a0b; 1.\u5b58\u50a8\u4f8b\u7a0b\u662f\u5b58\u50a8\u5728\u670d\u52a1\u5668\u4e2d\u7684\u4e00\u7ec4\u6307\u5b9a\u7684SQL\u8bed\u53e5: 1.\u5ba2\u6237\u673a\u65e0\u9700\u4e0d\u65ad\u91cd\u65b0\u53d1\u51fa\u5355 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[27,31],"class_list":["post-1317","post","type-post","status-publish","format-standard","hentry","category-mysql","tag-mysql","tag-mysql_ocp"],"_links":{"self":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/1317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1317"}],"version-history":[{"count":1,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/1317\/revisions"}],"predecessor-version":[{"id":1318,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=\/wp\/v2\/posts\/1317\/revisions\/1318"}],"wp:attachment":[{"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1317"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.royalwzy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n1.\u6267\u884c\u8fc7\u7a0b:\u4f7f\u7528CALL\u8bed\u53e5\u6765\u8c03\u7528\u5b58\u50a8\u8fc7\u7a0b,\u5b58\u50a8\u8fc7\u7a0b\u4f7f\u7528\u8f93\u51fa\u53d8\u91cf\u6216\u7ed3\u679c\u96c6\u4f20\u56de\u503c;
\n2.\u6267\u884c\u51fd\u6570:\u4ece\u8bed\u53e5\u5185\u90e8\u8c03\u7528\u51fd\u6570(\u5373,\u901a\u8fc7\u8c03\u7528\u76f8\u5e94\u51fd\u6570\u7684\u540d\u79f0),\u51fd\u6570\u8fd4\u56de\u6807\u91cf\u503c;
\n3.\u6bcf\u4e2a\u5b58\u50a8\u4f8b\u7a0b\u5747\u4e0e\u7279\u5b9a\u6570\u636e\u5e93\u76f8\u5173\u8054,\u6709\u591a\u91cd\u542b\u4e49:
\n 1.USE
\n 2.\u9650\u5b9a\u540d\u79f0:\u53ef\u4f7f\u7528\u4f8b\u7a0b\u7684\u6570\u636e\u5e93\u540d\u79f0\u9650\u5b9a\u4f8b\u7a0b\u540d\u79f0;\u6267\u884c\u6b64\u64cd\u4f5c\u53ef\u5f15\u7528\u5f53\u524d\u6570\u636e\u5e93\u4ee5\u5916\u7684\u4f8b\u7a0b;\u4f8b\u5982,\u8981\u8c03\u7528\u4e0etest\u6570\u636e\u5e93\u76f8\u5173\u8054\u7684\u5b58\u50a8\u8fc7\u7a0bp\u6216\u51fd\u6570f,\u8bf7\u4f7f\u7528CALL test.p()\u6216test.f();
\n 3.\u5220\u9664\u6570\u636e\u5e93\u65f6,\u4e5f\u4f1a\u5220\u9664\u4e0e\u5176\u5173\u8054\u7684\u6240\u6709\u5b58\u50a8\u4f8b\u7a0b;
\n4.SELECT\u8bed\u53e5:
\n 1.\u4ec5\u9650\u5b58\u50a8\u8fc7\u7a0b:\u51fd\u6570\u4e0d\u53ef\u4ee5\u4f7f\u7528;
\n 2.\u76f4\u63a5\u5c06\u7ed3\u679c\u96c6\u53d1\u9001\u5230\u5ba2\u6237\u673a;<\/p>\n
\nmysql> USE world;
\nmysql> DELIMITER \/\/
\nmysql> CREATE PROCEDURE record_count ()
\n BEGIN
\n SELECT (SELECT COUNT(*) FROM Country) ‘CountryCount’, (SELECT COUNT(*) FROM City) ‘CityCount’, (SELECT COUNT(*) FROM CountryLanguage) ‘CLCount’;
\n END\/\/
\nmysql> DELIMITER ;<\/p>\n
\nmysql> CREATE PROCEDURE p1(IN v_name varchar(20))
\n BEGIN
\n SELECT t1.Name, sum(t2.population) FROM Country t1, City t2 WHERE t1.Code = t2.CountryCode AND t1.name = v_name GROUP BY t1.Name;
\n END$$
\nmysql> DELIMITER ;
\nmysql> CALL p1(‘China’);<\/p>\n
\nmysql> CREATE PROCEDURE p2(IN v_name varchar(20), OUT v_population INT)
\n BEGIN
\n SELECT sum(t2.population) INTO v_population FROM Country t1, City t2 WHERE t1.Code = t2.CountryCode AND t1.name = v_name GROUP by t1.Name;
\n SELECT 0;
\n END$$
\nmysql> call p2(‘China’, @v_1);
\nmysql> select @v_1;<\/p>\n
\n 1.\u901a\u8fc7\u5728\u5b58\u50a8\u4f8b\u7a0b\u4e2d\u4f7f\u7528BEGIN…END\u8bed\u6cd5\u5e76\u4f7f\u7528\u89e6\u53d1\u5668,\u53ef\u4ee5\u521b\u5efa\u590d\u5408\u8bed\u53e5;
\n 2.BEGIN…END\u5757\u53ef\u5305\u542b\u96f6\u4e2a\u6216\u591a\u4e2a\u8bed\u53e5,\u7a7a\u590d\u5408\u8bed\u53e5\u662f\u5408\u6cd5\u7684,\u800c\u4e14\u590d\u5408\u8bed\u53e5\u4e2d\u7684\u8bed\u53e5\u6570\u91cf\u6ca1\u6709\u4e0a\u9650;
\n2.\u5206\u9694\u7b26:
\n 1.\u5728BEGIN…END\u8bed\u6cd5\u4e2d,\u5fc5\u987b\u4f7f\u7528\u5206\u53f7[;]\u7ec8\u6b62\u6bcf\u4e2a\u8bed\u53e5;
\n 2.\u7531\u4e8eMySQL\u5ba2\u6237\u673a\u4f7f\u7528\u5206\u53f7\u4f5c\u4e3aSQL\u8bed\u53e5\u7684\u9ed8\u8ba4\u7ec8\u6b62\u5b57\u7b26,\u5728\u4ee5\u4ea4\u4e92\u65b9\u5f0f\u6216\u9488\u5bf9\u6279\u5904\u7406\u4f7f\u7528MySQL\u547d\u4ee4\u884c\u5ba2\u6237\u673a\u65f6,\u5fc5\u987b\u4f7f\u7528DELIMITER\u8bed\u53e5\u66f4\u6539\u6b64\u8bbe\u7f6e;
\n 3.\u6b64\u66f4\u6539\u53ef\u786e\u4fdd\u5ba2\u6237\u673a\u4e0d\u4f1a\u5c06\u590d\u5408\u8bed\u53e5\u4e2d\u7684\u5206\u53f7\u89e3\u91ca\u4e3a\u8bed\u53e5\u5206\u9694\u7b26,\u5e76\u786e\u4fdd\u5ba2\u6237\u673a\u4e0d\u4f1a\u8fc7\u65e9\u5730\u5c06CREATEPROCEDURE\u8bed\u53e5\u53d1\u9001\u5230\u670d\u52a1\u5668;\u5f53\u521b\u5efa\u5b58\u50a8\u4f8b\u7a0b\u7684\u8bed\u53e5\u4ee5[\/\/]\u7ec8\u6b62\u65f6,\u5ba2\u6237\u673a\u4f1a\u5148\u5c06\u8be5\u8bed\u53e5\u53d1\u9001\u5230\u670d\u52a1\u5668,\u7136\u540e\u518d\u53d1\u51fa\u7b2c\u4e8c\u4e2aDELIMITER\u8bed\u53e5\u5c06\u8bed\u53e5\u5206\u9694\u7b26\u91cd\u7f6e\u4e3a\u5206\u53f7;<\/p>\n
\nmysql> USE world;
\nmysql> DELIMITER \/\/
\nmysql> CREATE FUNCTION pay_check (gross_pay FLOAT(9,2), tax_rate FLOAT (3,2))
\n RETURNS FLOAT(9,2) NO SQL
\n BEGIN
\n DECLARE net_pay FLOAT(9,2) DEFAULT 0;
\n SET net_pay=gross_pay – gross_pay * tax_rate;
\n RETURN net_pay;
\n END\/\/
\nmysql> DELIMITER ;<\/p>\n
\n2.\u7279\u5f81:\u901a\u8fc7\u591a\u4e2a\u7279\u5f81,\u53ef\u786e\u5b9a\u6709\u5173\u4f8b\u7a0b\u6240\u4f7f\u7528\u7684\u6570\u636e\u7684\u6027\u8d28;
\n 1.CONTAINS SQL\u8868\u793a\u4f8b\u7a0b\u4e0d\u5305\u542b\u7528\u4e8e\u8bfb\u53d6\u6216\u5199\u5165\u6570\u636e\u7684\u8bed\u53e5(\u4e3a\u9ed8\u8ba4\u503c);
\n 2.NO SQL\u8868\u793a\u4f8b\u7a0b\u4e0d\u5305\u542b\u4efb\u4f55SQL\u8bed\u53e5;
\n 3.READS SQL DATA\u8868\u793a\u4f8b\u7a0b\u5305\u542b\u7528\u4e8e\u8bfb\u53d6\u6570\u636e\u7684\u8bed\u53e5(\u4f8b\u5982,SELECT)\u800c\u4e0d\u5305\u542b\u7528\u4e8e\u5199\u5165\u6570\u636e\u7684\u8bed\u53e5;
\n 4.MODIFIES SQL DATA\u8868\u793a\u4f8b\u7a0b\u5305\u542b\u7528\u4e8e\u5199\u5165\u6570\u636e\u7684\u8bed\u53e5(\u4f8b\u5982,INSERT\/DELETE\/UPDATE);
\n 5.\u5728\u542f\u7528\u4e86\u4e8c\u8fdb\u5236\u65e5\u5fd7\u8bb0\u5f55\u540e,\u5982\u679c\u521b\u5efa\u51fd\u6570\u65f6\u672a\u6307\u5b9a\u7279\u5f81\u9879,\u5219MySQL\u4f1a\u4ea7\u751f\u4e00\u4e2a\u9519\u8bef;
\n3.DECLARE\u8bed\u53e5:
\n 1.\u5728\u5b58\u50a8\u4f8b\u7a0b\u4e2d\u4f7f\u7528DECLARE\u8bed\u53e5\u6765\u58f0\u660e\u672c\u5730\u53d8\u91cf\u5e76\u521d\u59cb\u5316\u7528\u6237\u53d8\u91cf;
\n 2.\u53ef\u5c06DEFAULT\u5b50\u53e5\u6dfb\u52a0\u5230DECLARE\u8bed\u53e5\u7684\u7ed3\u5c3e,\u4ee5\u4fbf\u4e3a\u7528\u6237\u53d8\u91cf\u6307\u5b9a\u521d\u59cb\u503c;\u5982\u679c\u7701\u53bbDEFAULT\u5b50\u53e5,\u5219\u7528\u6237\u53d8\u91cf\u7684\u521d\u59cb\u503c\u4e3aNULL;
\n4.SET\u8bed\u53e5:\u901a\u8fc7SET\u8bed\u53e5,\u60a8\u53ef\u4ee5\u4f7f\u7528=\u6216:=\u4f5c\u4e3a\u8d4b\u503c\u8fd0\u7b97\u7b26\u6765\u5411\u5b9a\u4e49\u7684\u53d8\u91cf\u8d4b\u503c;
\n5.RETURN\u8bed\u53e5:\u7528\u4e8e\u7ec8\u6b62\u5b58\u50a8\u51fd\u6570\u7684\u6267\u884c,\u5e76\u5c06\u503c\u8868\u8fbe\u5f0f\u8fd4\u56de\u7ed9\u51fd\u6570\u8c03\u7528\u65b9;<\/p>\n
\n1.SHOW CREATE PROCEDURE\u548cSHOW CREATE FUNCTION:
\n 1.\u8fd9\u4e9b\u8bed\u53e5\u4e3aMySQL\u6269\u5c55,\u7c7b\u4f3c\u4e8eSHOW CREATE TABLE;
\n 2.\u8fd9\u4e9b\u8bed\u53e5\u8fd4\u56de\u53ef\u7528\u4e8e\u91cd\u65b0\u521b\u5efa\u6307\u5b9a\u4f8b\u7a0b\u7684\u5177\u4f53\u5b57\u7b26\u4e32;
\n 3.\u8fd9\u4e9b\u8bed\u53e5\u7684\u4e3b\u8981\u9650\u5236\u4e4b\u4e00\u662f\u60a8\u5fc5\u987b\u77e5\u9053\u8fc7\u7a0b\u6216\u51fd\u6570\u7684\u540d\u79f0,\u5e76\u4e14\u5fc5\u987b\u786e\u5b9a\u5176\u4e3a\u8fc7\u7a0b\u6216\u51fd\u6570,\u7136\u540e\u624d\u80fd\u5c1d\u8bd5\u67e5\u770b\u76f8\u5e94\u4fe1\u606f;
\n2.SHOW PROCEDURE STATUS\u548cSHOW FUNCTION STATUS:
\n 1.\u8fd9\u4e9b\u8bed\u53e5\u7279\u5b9a\u4e8eMySQL;
\n 2.\u5b83\u4eec\u53ef\u8fd4\u56de\u4f8b\u7a0b\u7684\u7279\u5f81,\u5982\u6570\u636e\u5e93\/\u540d\u79f0\/\u7c7b\u578b\/\u521b\u5efa\u8005\u4ee5\u53ca\u521b\u5efa\u548c\u4fee\u6539\u65e5\u671f;
\n 3.\u8fd9\u4e9b\u8bed\u53e5\u6709\u4e00\u4e2a\u4f18\u70b9:\u53ef\u57fa\u4e8eLIKE\u6a21\u5f0f\u663e\u793a\u7279\u5b9a\u4f8b\u7a0b,\u5982\u679c\u672a\u6307\u5b9a\u4efb\u4f55\u6a21\u5f0f,\u5219\u4f1a\u6839\u636e\u6240\u4f7f\u7528\u7684\u8bed\u53e5,\u5217\u51fa\u6240\u6709\u5b58\u50a8\u8fc7\u7a0b\u6216\u6240\u6709\u5b58\u50a8\u51fd\u6570\u7684\u4fe1\u606f;
\n3.INFORMATION_SCHEMA.ROUTINES:\u5305\u542b\u5b58\u50a8\u4f8b\u7a0b(\u8fc7\u7a0b\u548c\u51fd\u6570)\u7684\u76f8\u5173\u4fe1\u606f,\u5e76\u8fd4\u56de\u53ef\u540c\u65f6\u5728SHOW CREATE …\u548cSHOW … STATUS\u8bed\u53e5\u4e2d\u627e\u5230\u7684\u5927\u90e8\u5206\u8be6\u7ec6\u4fe1\u606f,\u4ee5\u5305 \u542b\u7528\u4e8e\u521b\u5efa\u5b58\u50a8\u4f8b\u7a0b\u7684\u5b9e\u9645\u8bed\u6cd5;
\n mysql> SELECT routine_name, routine_schema, routine_type, definer
\n FROM INFORMATION_SCHEMA.ROUTINES
\n WHERE routine_name LIKE ‘film%’;
\n4.MySQL\u7cfb\u7edf\u6570\u636e\u5e93\u4e2d\u4e0e\u7f16\u7a0b\u7ec4\u4ef6\u5173\u8054\u7684\u8868
\n 1.mysql.event\u8868,\u5305\u542bMySQL\u670d\u52a1\u5668\u4e2d\u6240\u5b58\u50a8\u4e8b\u4ef6\u7684\u76f8\u5173\u4fe1\u606f;
\n 2.mysql.proc\u8868,\u5305\u542bMySQL\u670d\u52a1\u5668\u4e2d\u7684\u5b58\u50a8\u8fc7\u7a0b\u548c\u51fd\u6570\u7684\u76f8\u5173\u4fe1\u606f;
\n 3.mysql.procs_priv\u8868,\u4e3a\u5f15\u7528\u5b58\u50a8\u8fc7\u7a0b\u7684\u7528\u6237\u63d0\u4f9b\u8bbf\u95ee\u63a7\u5236\u6388\u4e88\u8be6\u7ec6\u4fe1\u606f;<\/p>\n
\n1.\u5b58\u50a8\u8fc7\u7a0b\u548c\u51fd\u6570\u7684\u4f7f\u7528\u6d89\u53ca\u591a\u4e2a\u7279\u6743:
\n 1.CREATE ROUTINE:\u521b\u5efa\u5b58\u50a8\u4f8b\u7a0b;
\n 2.ALTER ROUTINE:\u66f4\u6539\u6216\u5220\u9664\u5b58\u50a8\u4f8b\u7a0b;
\n 3.EXECUTE:\u6267\u884c\u5b58\u50a8\u4f8b\u7a0b;
\n 4.GRANT OPTION:\u5c06\u7279\u6743\u6388\u4e88\u5176\u4ed6\u5e10\u6237;
\n2.\u9ed8\u8ba4\u64cd\u4f5c:
\n 1.\u521b\u5efa\u5b58\u50a8\u4f8b\u7a0b\u65f6,MySQL\u4f1a\u81ea\u52a8\u5411\u60a8\u7684\u5e10\u6237\u6388\u4e88\u5bf9\u8be5\u4f8b\u7a0b\u7684EXECUTE\u548cALTER ROUTINE\u7279\u6743;
\n 2.\u62e5\u6709\u64a4\u6d88\u7279\u6743\u4ee5\u53caGRANT OPTION\u7279\u6743\u7684\u7528\u6237\u7a0d\u540e\u53ef\u64a4\u6d88\u6216\u5220\u9664\u8fd9\u4e9b\u7279\u6743;\u5728\u521b\u5efa\u4f8b\u7a0b\u540e,\u53ef\u4ee5\u901a\u8fc7\u53d1\u51faSHOW GRANTS\u8bed\u53e5\u6765\u9a8c\u8bc1\u8fd9\u4e9b\u7279\u6743;
\n3.\u6388\u4e88\u7279\u6743:
\n 1.\u5f53\u5728\u5168\u5c40\u7ea7\u522b\u6216\u6570\u636e\u5e93\u7ea7\u522b\u6388\u4e88\u6240\u6709\u7279\u6743\u65f6,GRANT ALL\u8bed\u53e5\u5305\u62ec\u9664GRANT OPTION\u4e4b\u5916\u7684\u6240\u6709\u5b58\u50a8\u4f8b\u7a0b\u7279\u6743;\u8981\u6388\u4e88GRANT OPTION\u7279\u6743,\u8bf7\u5728\u8be5\u8bed\u53e5\u7ed3\u5c3e\u5305\u542bWITH GRANT OPTION\u5b50\u53e5;
\n 2.\u53ef\u4ee5\u5728\u5355\u4e2a\u4f8b\u7a0b\u7ea7\u522b\u6388\u4e88EXECUTE,ALTER ROUTINE\u548cGRANT OPTION\u7279\u6743,\u4f46\u4ec5\u9650\u4e8e\u5df2\u7ecf\u5b58\u5728\u7684\u4f8b\u7a0b;
\n 3.\u8981\u6388\u4e88\u5bf9\u5355\u4e2a\u4f8b\u7a0b\u7684\u7279\u6743,\u53ef\u4f7f\u7528\u5176\u6570\u636e\u5e93\u540d\u79f0\u9650\u5b9a\u4f8b\u7a0b,\u5e76\u63d0\u4f9b\u5173\u952e\u5b57PROCEDURE\u6216FUNCTION\u4ee5\u6307\u793a\u4f8b\u7a0b\u7c7b\u578b;
\n GRANT EXECUTE, ALTER ROUTINE ON PROCEDURE world_innodb.record_count TO ‘magellan’@’localhost’ WITH GRANT OPTION;<\/p>\n
\nA<\/p>\n
\n1.\u636e\u5e93\u89e6\u53d1\u5668\u662f\u6570\u636e\u5e93\u4e2d\u6240\u7ef4\u62a4\u7684\u547d\u540d\u6570\u636e\u5e93\u5bf9\u8c61,\u5c06\u5728\u4fee\u6539\u8868\u4e2d\u6570\u636e\u65f6\u88ab\u6fc0\u6d3b;
\n2.\u529f\u80fd:
\n 1.\u5728\u63d2\u5165\u6216\u66f4\u65b0\u6570\u636e\u4e4b\u524d\u5bf9\u6570\u636e\u8fdb\u884c\u68c0\u67e5\u5e76\u9a8c\u8bc1\u5220\u9664\u548c\u66f4\u65b0;
\n 2.\u5145\u5f53\u6570\u636e\u8fc7\u6ee4\u5668,\u5728\u63d2\u5165\u6216\u66f4\u65b0\u4e4b\u524d\u4fee\u6539\u8d85\u51fa\u8303\u56f4\u7684\u6570\u636e;
\n 3.\u4fee\u6539INSERT\/UPDATE\/DELETE\u7684\u884c\u4e3a\u65b9\u5f0f;
\n 4.\u5bf9\u4e8e\u4e0d\u652f\u6301\u5916\u952e\u7684\u5b58\u50a8\u5f15\u64ce,\u6a21\u4eff\u5916\u952e\u7684\u884c\u4e3a;
\n 5.\u63d0\u4f9b\u65e5\u5fd7\u8bb0\u5f55\u529f\u80fd;
\n 6.\u81ea\u52a8\u521b\u5efa\u6c47\u603b\u8868;
\n3.\u529f\u80fd\u6982\u62ec:
\n 1.\u89e6\u53d1\u5668\u53ef\u4ee5\u63d0\u9ad8\u8868\u4e2d\u6570\u636e\u7684\u529f\u80fd\u548c\u5b89\u5168\u6027\u7ea7\u522b;
\n 2.\u53ef\u4ee5\u4f7f\u7528\u89e6\u53d1\u5668\u63a7\u5236\u5bf9\u7279\u5b9a\u6570\u636e\u7684\u8bbf\u95ee\u6743\u9650,\u6267\u884c\u7279\u5b9a\u65e5\u5fd7\u8bb0\u5f55\u6216\u5bf9\u6570\u636e\u672c\u8eab\u8fdb\u884c\u5ba1\u8ba1;<\/p>\n
\n1.CREATE TRIGGER\u8bed\u53e5;
\n CREATE TRIGGER trigger_name
\n { BEFORE | AFTER }
\n { INSERT | UPDATE | DELETE } ON table_name
\n FOR EACH ROW triggered_statement
\n2.\u4f8b\u5b50:
\nCREATE TRIGGER City_AD AFTER DELETE
\nON City FOR EACH ROW
\nINSERT INTO DeletedCity(ID, Name) VALUES (OLD.ID, OLD.Name);<\/p>\n
\n2.table_name\u662f\u8981\u4e0e\u89e6\u53d1\u5668\u5173\u8054\u7684\u8868\u7684\u540d\u79f0;
\n3.BEFORE\u548cAFTER\u6307\u793a\u6fc0\u6d3b\u89e6\u53d1\u5668\u7684\u65f6\u95f4(\u662f\u5728\u89e6\u53d1\u4e8b\u4ef6\u4e4b\u524d\u6216\u662f\u4e4b\u540e);
\n4.\u800cINSERT\/UPDATE\/DELETE\u6307\u793a\u5177\u4f53\u7684\u4e8b\u4ef6;
\n5.\u8868\u540dOLD\u548cNEW\u662f\u6307\u89e6\u53d1\u5668\u53ef\u67e5\u770b\u7684\u865a\u62df\u8868,\u8fd9\u4e9b\u8868\u5206\u522b\u5305\u542bUPDATE\u6216DELETE\u8bed\u53e5\u6240\u4fee\u6539\u7684\u6570\u636e\u7684\u65e7\u7248\u672c,\u6216INSERT\u6216UPDATE\u8bed\u53e5\u6240\u6dfb\u52a0\u7684\u6570\u636e\u7684\u65b0\u7248\u672c;<\/p>\n
\n1.\u521b\u5efa\u4e00\u4e2a\u6c47\u603b\u8868;
\nCREATE TABLE ps(name char(52), population BIGINT);
\nINSERT INTO ps
\nSELECT t1.NAME, sum(t2.population) FROM Country t1, City t2 WHERE t1.Code = t2.CountryCode GROUP by t1.Name order by 2 desc;
\n2.\u521b\u5efa\u66f4\u65b0\u89e6\u53d1\u5668,\u4e00\u79cd\u52a8\u4f5c\u65f6\u95f4\u7684\u89e6\u53d1\u5668\u53ea\u80fd\u521b\u5efa\u4e00\u4e2a;
\nDELIMITER $$
\nCREATE TRIGGER City_AU AFTER UPDATE
\nON City FOR EACH ROW
\nUPDATE ps SET population = population + new.population – old.population;$$
\nDELIMITER ;
\nERROR 1235 (42000): This version of MySQL doesn’t yet support ‘multiple triggers with the same action time and event for one table’
\n3.\u66f4\u65b0\u8bb0\u5f55\u7528\u6765\u6a21\u62df\u8bb0\u5f55\u53d1\u751f\u53d8\u5316;
\nSELECT * FROM City WHERE id = 1890;
\nUPDATE City SET population = population + 1 WHERE id = 1890;
\n4.\u67e5\u770b\u6c47\u603b\u8868\u53cd\u5e94\u53d8\u5316\u7ed3\u679c;
\nSELECT * FROM ps WHERE name = ‘China’;
\nSELECT sum(population) FROM City WHERE CountryCode=’CHN’;<\/p>\n
\n1.BEFORE\u548cAFTER\u5173\u952e\u5b57\u662f\u6307\u89e6\u53d1\u5668\u7684\u6fc0\u6d3b\u65f6\u95f4,\u76f8\u5bf9\u4e8e\u6570\u636e\u4fee\u6539\u8bed\u53e5(INSERT\/UPDATE\/DELETE)\u5c06\u66f4\u6539\u5199\u5165\u5e95\u5c42\u6570\u636e\u5e93\u7684\u65f6\u95f4;
\n2.BEFORE\u5173\u952e\u5b57\u53ef\u4f7f\u89e6\u53d1\u5668\u5728\u6d89\u53ca\u7684\u6570\u636e\u4fee\u6539\u4e4b\u524d\u6267\u884c,\u53ef\u4f7f\u7528BEFORE\u89e6\u53d1\u5668\u6355\u83b7\u65e0\u6548\u6570\u636e\u6761\u76ee\u5e76\u5728\u5199\u5165\u8868\u4e4b\u524d\u5bf9\u5176\u8fdb\u884c\u66f4\u6b63\u6216\u62d2\u7edd;
\n3.AFTER\u5173\u952e\u5b57\u5b9a\u4e49\u5728\u6570\u636e\u4fee\u6539\u6210\u529f\u540e\u6267\u884c\u7684\u89e6\u53d1\u5668,\u53ef\u4f7f\u7528AFTER\u89e6\u53d1\u5668\u8bb0\u5f55\u6216\u5ba1\u8ba1\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u4fee\u6539;<\/p>\n
\nMySQL\u6309\u5982\u4e0b\u65b9\u5f0f\u5904\u7406\u89e6\u53d1\u5668\u6267\u884c\u671f\u95f4\u53d1\u751f\u7684\u9519\u8bef:
\n1.BEFORE\u89e6\u53d1\u5668\u5931\u8d25:\u5305\u542b\u76f8\u5e94\u884c\u64cd\u4f5c\u7684\u4e8b\u52a1\u5c06\u56de\u6eda;
\n2.AFTER\u89e6\u53d1\u5668\u6267\u884c:BEFORE\u89e6\u53d1\u5668\u4e8b\u4ef6\u548c\u884c\u64cd\u4f5c\u5fc5\u987b\u6210\u529f\u6267\u884c;
\n3.\u5bf9\u4e8e\u975e\u4e8b\u52a1\u8868,\u4e8b\u52a1\u4e0d\u53ef\u7528:\u53ea\u6709\u89e6\u53d1\u4e86\u89e6\u53d1\u5668\u7684\u8bed\u53e5\u4f1a\u56de\u6eda,\u4f46\u5728\u53d1\u751f\u9519\u8bef\u4e4b\u524d\u6267\u884c\u7684\u6240\u6709\u66f4\u6539\u4ecd\u7136\u4f1a\u751f\u6548;<\/p>\n
\n1.SHOW CREATE TRIGGER trigger_name:
\n 1.\u6b64\u8bed\u53e5\u8fd4\u56de\u53ef\u7528\u4e8e\u91cd\u65b0\u521b\u5efa\u6307\u5b9a\u89e6\u53d1\u5668\u7684\u5177\u4f53\u5b57\u7b26\u4e32;
\n 2.\u60a8\u5fc5\u987b\u77e5\u9053\u89e6\u53d1\u5668\u7684\u540d\u79f0\u624d\u80fd\u8fd0\u884c\u6b64\u8bed\u53e5;
\n 3.\u5bf9\u4e8eSHOW CREATE TRIGGER\u8bed\u53e5,\u4e0d\u5b58\u5728LIKE\u6216WHERE\u8bed\u6cd5;
\n2.SHOW TRIGGERS:
\n 1.\u6b64\u8bed\u53e5\u4e3aMySQL\u6269\u5c55;
\n 2.\u5b83\u53ef\u8fd4\u56de\u89e6\u53d1\u5668\u7684\u7279\u5f81,\u5982\u6570\u636e\u5e93\/\u540d\u79f0\/\u7c7b\u578b\/\u521b\u5efa\u8005\u4ee5\u53ca\u521b\u5efa\u548c\u4fee\u6539\u65e5\u671f;
\n 3.\u6b64\u8bed\u53e5\u6709\u4e00\u4e2a\u4f18\u70b9:\u53ef\u57fa\u4e8eLIKE\u6a21\u5f0f\u6216WHERE\u5b50\u53e5\u4e2d\u63d0\u4f9b\u7684\u6761\u4ef6\u6765\u663e\u793a\u7279\u5b9a\u89e6\u53d1\u5668;\u5982\u679c\u672a\u6307\u5b9a\u6761\u4ef6,\u5219\u6b64\u8bed\u53e5\u4f1a\u663e\u793a\u6240\u6709\u89e6\u53d1\u5668\u7684\u4fe1\u606f;
\n3.INFORMATION_SCHEMA.TRIGGERS:
\n 1.\u5305\u542bSHOW\u547d\u4ee4\u6240\u663e\u793a\u7684\u6240\u6709\u6570\u636e;
\n 2.\u5b8c\u6574\u5730\u5448\u73b0\u5728\u6240\u6709\u6570\u636e\u5e93\u4e2d\u53ef\u7528\u7684\u89e6\u53d1\u5668;<\/p>\n
\n1.\u4f7f\u7528\u5982\u4e0b\u8bed\u6cd5\u53ef\u663e\u5f0f\u5220\u9664\u89e6\u53d1\u5668:
\n 1.DROP TRIGGER [IF EXISTS] [schema_name.]trigger_name;
\n 2.\u4f7f\u7528IF EXISTS\u53ef\u9632\u6b62\u56e0\u5c1d\u8bd5\u5220\u9664\u4e0d\u5b58\u5728\u7684\u89e6\u53d1\u5668\u800c\u51fa\u73b0\u7684\u9519\u8bef;
\n2.\u901a\u8fc7\u5220\u9664\u4ee5\u4e0b\u9879,\u53ef\u9690\u5f0f\u5220\u9664\u89e6\u53d1\u5668:
\n 1.\u9488\u5bf9\u5176\u5b9a\u4e49\u89e6\u53d1\u5668\u7684\u8868;
\n 2.\u5305\u542b\u89e6\u53d1\u5668\u7684\u6570\u636e\u5e93;<\/p>\n
\n1.\u4e0d\u5141\u8bb8\u4f7f\u7528\u7684\u8bed\u53e5\u5305\u62ec:
\n 1.SQL\u9884\u5904\u7406\u8bed\u53e5;
\n 2.\u663e\u793a\u6216\u9690\u5f0fCOMMIT\u548cROLLBACK;
\n 3.\u8fd4\u56de\u7ed3\u679c\u96c6\u7684\u8bed\u53e5(\u65e0\u6cd5\u8fd4\u56de\u7ed3\u679c\u96c6,\u8bf7\u901a\u8fc7\u4f7f\u7528SELECT …INTO var_list,\u6216\u8005\u901a\u8fc7\u4f7f\u7528\u5149\u6807\u548cFETCH\u8bed\u53e5\u65b9\u6cd5\u5728\u89e6\u53d1\u5668\u4e2d\u5904\u7406\u7ed3\u679c\u96c6);
\n 4.FLUSH\u8bed\u53e5;
\n 5.\u7528\u4e8e\u4fee\u6539\u8981\u5e94\u7528\u89e6\u53d1\u5668\u7684\u8868\u7684\u8bed\u53e5;
\n2.\u4ee5\u4e0b\u66f4\u6539\u4e0d\u4f1a\u89e6\u53d1\u89e6\u53d1\u5668:
\n 1.\u7ea7\u8054\u5916\u952e\u6240\u5bfc\u81f4\u7684\u66f4\u6539;
\n 2.\u5728\u57fa\u4e8e\u884c\u7684\u590d\u5236\u8fc7\u7a0b\u4e2d\u5bfc\u81f4\u7684\u66f4\u6539;<\/p>\n
\n1.\u8981\u6267\u884cCREATE TRIGGER\u548cDROP TRIGGER\u547d\u4ee4,\u9700\u8981\u6709TRIGGER\u7279\u6743;
\n2.\u9700\u8981\u6709\u5176\u4ed6\u7279\u6743\u624d\u80fd\u5728\u89e6\u53d1\u5668\u4e2d\u4f7f\u7528OLD\u548cNEW:
\n 1.\u8981\u4f7f\u7528SET NEW.col_name = value\u4e3a\u5217\u8d4b\u503c,\u9700\u8981\u5bf9\u8be5\u5217\u62e5\u6709UPDATE\u7279\u6743;
\n 2.\u8981\u5728\u8868\u8fbe\u5f0f\u4e2d\u4f7f\u7528NEW.col_name\u4ee5\u5f15\u7528\u65b0\u7684\u5217\u503c,\u9700\u8981\u5bf9\u8be5\u5217\u62e5\u6709SELECT\u7279\u6743;<\/p>\n
\nb<\/p>\n
\n1.\u4e8b\u4ef6:
\n 1.MySQL\u4e8b\u4ef6\u662f\u6309\u8c03\u5ea6\u8868\u8fd0\u884c\u7684\u4efb\u52a1,\u8fd9\u4e9b\u4e8b\u4ef6\u53ef\u79f0\u4e3a\u201c\u8c03\u5ea6\u4e8b\u4ef6\u201d;
\n 2.\u521b\u5efa\u4e8b\u4ef6\u65f6,\u4f1a\u5c06\u5176\u521b\u5efa\u4e3a\u547d\u540d\u6570\u636e\u5e93\u5bf9\u8c61,\u5176\u4e2d\u5305\u542b\u5728\u7279\u5b9a\u65f6\u95f4\u6267\u884c\u6216\u5b9a\u671f\u91cd\u590d\u53d1\u751f\u7684SQL\u8bed\u53e5(\u6216\u5b58\u50a8\u8fc7\u7a0b);
\n 3.\u4e0eUNIX crontab\u6216Windows\u4efb\u52a1\u8c03\u5ea6\u7a0b\u5e8f\u7c7b\u4f3c;
\n CREATE EVENT event_name
\n ON SCHEDULE schedule DO sql_statement
\n 4.\u5fc5\u987b\u9009\u9879:
\n 1.event_name:\u4e8b\u4ef6\u662f\u6a21\u5f0f\u5bf9\u8c61,\u4e0e\u8868,\u5b58\u50a8\u8fc7\u7a0b\u548c\u89e6\u53d1\u5668\u4e00\u6837;event_name\u5fc5\u987b\u662f\u6709\u6548\u7684\u6807\u8bc6\u7b26,\u4e14\u53ef\u4ee5\u6309\u6b63\u5e38\u65b9\u5f0f\u901a\u8fc7\u6a21\u5f0f\u540d\u79f0\u8fdb\u884c\u5f15\u7528\u548c\/\u6216\u9650\u5b9a;
\n 2.schedule:\u8c03\u5ea6\u8868\u662f\u4e00\u79cd\u89c4\u5219,\u7528\u4e8e\u6307\u5b9aMySQL\u6267\u884c\u4e0e\u4e8b\u4ef6\u76f8\u5173\u8054\u7684\u64cd\u4f5c\u7684\u65f6\u95f4;
\n 3.sql_statement:\u5fc5\u987b\u5305\u542b\u6309\u8c03\u5ea6\u8868\u6267\u884c\u7684\u6709\u6548SQL\u8bed\u53e5\u6216\u5b58\u50a8\u8fc7\u7a0b\u8bed\u53e5;\u6b64\u8bed\u53e5\u53d7\u5230\u7684\u9650\u5236\u4e0e\u9002\u7528\u4e8e\u5b58\u50a8\u51fd\u6570\u548c\u52a8\u6001SQL\u7684\u9650\u5236\u76f8\u540c;\u901a\u5e38\u4f1a\u4f7f\u7528CALL\u8bed\u53e5\u8c03\u7528\u8fc7\u7a0b\u6765\u6267\u884c\u5b9e\u9645\u64cd\u4f5c;
\n2.\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f
\n 1.\u521b\u5efa\u4e8b\u4ef6\u540e,\u8be5\u4e8b\u4ef6\u5c06\u5b58\u50a8\u5728\u6570\u636e\u5e93\u4e2d,\u4ee5\u4fbf\u6309\u8c03\u5ea6\u8868\u6267\u884c;
\n 2.event_scheduler\u7ebf\u7a0b\u4f1a\u76d1\u89c6\u6240\u6709\u4e8b\u4ef6\u7684\u8c03\u5ea6\u8868,\u5728\u5230\u8fbe\u8c03\u5ea6\u8868\u4e2d\u7684\u65f6\u95f4\u65f6,\u8be5\u7ebf\u7a0b\u4f1a\u542f\u52a8\u4e00\u4e2a\u65b0\u7684\u7ebf\u7a0b\u6765\u6267\u884c\u6bcf\u4e2a\u4e8b\u4ef6;
\n 3.\u9ed8\u8ba4\u60c5\u51b5\u4e0b,event_scheduler\u7ebf\u7a0b\u8bbe\u7f6e\u4e3aOFF,\u60a8\u5fc5\u987b\u663e\u5f0f\u542f\u7528\u8be5\u7ebf\u7a0b,\u65b9\u6cd5\u4e3a\u4fee\u6539\u5168\u5c40event_scheduler\u670d\u52a1\u5668\u53d8\u91cf\u7684\u503c,\u5c06\u5176\u8bbe\u7f6e\u4e3aON;\u8fd8\u53ef\u4ee5\u901a\u8fc7\u5c06\u670d\u52a1\u5668\u53d8\u91cf\u6dfb\u52a0\u5230\u9009\u9879\u6587\u4ef6\u4e2d(\u4ee5\u4fbf\u66f4\u6539\u5728\u542f\u52a8\u65f6\u751f\u6548)\u6216\u52a8\u6001\u4f7f\u7528SET\u8bed\u6cd5\u6765\u5b9e\u73b0;
\n 4.\u5982\u679c\u5728event_scheduler\u8bbe\u7f6e\u4e3aDISABLED\u7684\u60c5\u51b5\u4e0b\u542f\u52a8\u670d\u52a1\u5668,\u5219\u65e0\u6cd5\u5728MySQL\u6b63\u5728\u8fd0\u884c\u65f6\u901a\u8fc7SET\u8bed\u53e5\u5c06\u5176\u542f\u7528;\u800c\u5fc5\u987b\u505c\u6b62MySQL\u5e76\u5728\u542f\u7528\u8be5\u9009\u9879\u7684\u60c5\u51b5\u4e0b\u91cd\u65b0\u542f\u52a8MySQL;
\n 5.\u542f\u7528event_scheduler\u7ebf\u7a0b\u540e,\u60a8\u53ef\u4ee5\u5728SHOW PROCESSLIST\u7684\u8f93\u51fa(\u4ee5\u53caINFORMATION_SCHEMA\u7b49\u6548\u9879PROCESSLIST)\u4e2d\u770b\u5230\u8be5\u7ebf\u7a0b;
\n3.\u4e8b\u4ef6\u8bed\u53e5:
\n 1.SET GLOBAL event_scheduler = {ON | OFF};
\n 2.CREATE EVENT:\u521b\u5efa\u4e8b\u4ef6;
\n 3.ALTER EVENT:\u66f4\u6539\u4e8b\u4ef6;
\n 4.DROP EVENT:\u5220\u9664\u4e8b\u4ef6;<\/p>\n
\n1.\u8c03\u5ea6\u8868\u662f\u7528\u4e8e\u6307\u5b9a\u4e8b\u4ef6\u6267\u884c\u65f6\u95f4\u7684\u89c4\u5219;
\n2.\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u8c03\u5ea6\u64cd\u4f5c:
\n 1.\u6267\u884c\u4e00\u6b21(\u4f7f\u7528AT\u5173\u952e\u5b57);
\n 2.\u91cd\u590d\u6267\u884c(\u4f7f\u7528EVERY\u5173\u952e\u5b57):\u5fc5\u987b\u5b9a\u4e49\u4e8b\u4ef6\u7684\u91cd\u590d\u9891\u7387;\u8fd8\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u65f6\u95f4\u6bb5,\u4ee5\u786e\u5b9a\u5e94\u91cd\u590d\u6267\u884c\u4e8b\u4ef6\u7684\u671f\u9650;
\n3.\u7531\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u6267\u884c\u8c03\u5ea6\u4e8b\u4ef6:
\n 1.\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u662fmysqld\u8fdb\u7a0b\u4e2d\u7684\u4e00\u4e2a\u5355\u72ec\u7ebf\u7a0b,\u8d1f\u8d23\u6267\u884c\u8c03\u5ea6\u4e8b\u4ef6;
\n 2.\u8c03\u5ea6\u7a0b\u5e8f\u4f1a\u68c0\u67e5\u662f\u5426\u5e94\u6267\u884c\u4e8b\u4ef6,\u5982\u679c\u5e94\u6267\u884c\u4e8b\u4ef6,\u5219\u4f1a\u521b\u5efa\u65b0\u7684\u8fde\u63a5\u6765\u6267\u884c\u64cd\u4f5c;
\n4.\u4f7f\u7528\u4e8b\u4ef6\u6765\u81ea\u52a8\u5730\u5b9a\u671f\u6267\u884c\u4efb\u52a1;
\n5.\u793a\u4f8b:
\n 1.\u8868\u6570\u636e\u7684\u5e38\u89c4CSV\u8f6c\u50a8:\u52a0\u8f7d\u6570\u636e\u4ed3\u5e93\u6216\u8005\u5c06\u6570\u636e\u5bfc\u51fa\u5230\u6587\u4ef6\u4e2d;
\n 2.ANALYZE TABLE;
\n 3.\u81ea\u52a8\u5730\u5b9a\u671f\u6267\u884c(\u7ef4\u62a4)\u4efb\u52a1,\u5982\u66f4\u65b0\u6c47\u603b\u8868\u6216\u5237\u65b0\u67e5\u8be2\u4e2d\u7684\u8868(\u7269\u5316\u89c6\u56fe\u4eff\u771f);<\/p>\n
\n1.\u521b\u5efa\u4e00\u4e2a\u4e00\u6b21\u6027\u6267\u884c\u7684\u4f5c\u4e1a,2\u5206\u949f10\u79d2\u540e\u63d2\u5165\u4e00\u6761\u6570\u636e\u5230test.t\u4e2d;
\n CREATE EVENT e_at_insert_to_table
\n ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL ‘2:10’ MINUTE_SECOND
\n DO INSERT INTO test.t values(NOW());
\n2.\u521b\u5efa\u4e00\u4e2a\u91cd\u590d\u6267\u884c\u7684\u4f5c\u4e1a,\u6bcf\u59293\u70b9\u6267\u884c\u4e00\u6b21;
\n CREATE EVENT e_every_insert_to_table
\n ON SCHEDULE EVERY 1 DAY STARTS date_add(curdate(), INTERVAL 3 HOUR)
\n DO INSERT INTO test.t values(NOW());
\n3.DO\u5b50\u53e5\u4e2d\u4f7f\u7528BEGIN…END\u5173\u952e\u5b57;
\n DELIMITER $$
\n CREATE EVENT e_event_do
\n ON SCHEDULE EVERY 1 MINUTE
\n DO
\n BEGIN
\n INSERT INTO test.t values(NOW());
\n COMMIT;
\n END$$
\n DELIMITER ;<\/p>\n
\n1.SCHEDULE\u5b50\u53e5\u7684\u8bed\u6cd5:
\n AT timestamp [+ INTERVAL interval] | EVERY interval [STARTS timestamp [+ INTERVAL interval]] [ENDS timestamp [+ INTERVAL interval]]
\n2.SCHEDULE\u5b50\u53e5\u53ef\u5305\u542b\u4ee5\u4e0b\u53d8\u91cf\u5143\u7d20:
\n 1.timestamp:DATETIME\u6216TIMESTAMP\u7c7b\u578b\u7684\u8868\u8fbe\u5f0f;
\n 2.interval:\u7528\u4e8e\u6307\u5b9a\u6301\u7eed\u65f6\u95f4,\u6301\u7eed\u65f6\u95f4\u7684\u8868\u793a\u65b9\u6cd5\u4e3a,\u6307\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u91cf,\u540e\u8ddf\u7528\u4e8e\u5b9a\u4e49\u7279\u5b9a\u79cd\u7c7b\u6301\u7eed\u65f6\u95f4\u7684\u5173\u952e\u5b57;
\n – YEAR
\n – QUARTER
\n – MONTH
\n – DAY
\n – HOUR
\n – MINUTE
\n – WEEK
\n – SECOND
\n – YEAR_MONTH
\n – DAY_HOUR
\n – DAY_MINUTE
\n – DAY_SECOND
\n – HOUR_MINUTE
\n – HOUR_SECOND
\n – MINUTE_SECOND<\/p>\n
\n1.\u5fc5\u987b\u62e5\u6709SUPER\u7279\u6743\u624d\u80fd\u8bbe\u7f6e\u5168\u5c40event_scheduler\u53d8\u91cf;
\n2.\u5fc5\u987b\u62e5\u6709EVENT\u7279\u6743\u624d\u80fd\u521b\u5efa,\u4fee\u6539\u6216\u5220\u9664\u4e8b\u4ef6;
\n3.\u4f7f\u7528GRANT\u5206\u914d\u7279\u6743(\u4ec5\u9650\u5728\u6a21\u5f0f\u7ea7\u522b):
\n mysql> GRANT EVENT ON myschema.* TO user1@srv1;
\n mysql> GRANT EVENT ON *.* TO user1@srv1;
\n4.\u4f7f\u7528REVOKE\u53d6\u6d88\u4e8b\u4ef6\u7279\u6743:
\n 1.REVOKE EVENT ON myschema.* FROM user1@srv1;
\n 2.\u64a4\u6d88\u7528\u6237\u5e10\u6237\u7684EVENT\u7279\u6743\u4e0d\u4f1a\u5220\u9664\u6216\u7981\u7528\u8be5\u5e10\u6237\u5df2\u521b\u5efa\u7684\u4efb\u4f55\u4e8b\u4ef6;
\n5.mysql\u8868:
\n 1.\u7528\u6237\u7684EVENT\u7279\u6743\u5b58\u50a8\u5728mysql.user\u548cmysql.db\u8868\u7684Event_priv\u5217\u4e2d;
\n 2.\u5728\u8fd9\u4e24\u79cd\u60c5\u51b5\u4e0b,\u8be5\u5217\u5747\u5b58\u50a8\u503c\u201cY\u201d\u6216\u201cN\u201d\u4e4b\u4e00,\u201cN\u201d\u662f\u9ed8\u8ba4\u503c;\u4ec5\u5f53\u7ed9\u5b9a\u7528\u6237\u62e5\u6709\u5168\u5c40EVENT\u7279\u6743\u65f6,\u8be5\u7528\u6237\u7684mysql.user.Event_priv\u503c\u624d\u4f1a\u8bbe\u4e3a\u201cY\u201d;
\n 3.\u5bf9\u4e8e\u6a21\u5f0f\u7ea7\u522b\u7684EVENT\u7279\u6743,GRANT\u4f1a\u5728mysql.db\u4e2d\u521b\u5efa\u4e00\u4e2a\u884c,\u5e76\u6309\u5982\u4e0b\u6240\u793a\u8bbe\u7f6e\u8be5\u884c\u7684\u5217\u503c:
\n 1.Db:\u6a21\u5f0f\u7684\u540d\u79f0;
\n 2.User:\u7528\u6237\u7684\u540d\u79f0;
\n 3.Event_priv:\u201cY\u201d;
\n 4.\u4e0d\u5fc5\u76f4\u63a5\u64cd\u4f5c\u8fd9\u4e9b\u8868,\u56e0\u4e3aGRANT EVENT\u548cREVOKE EVENT\u8bed\u53e5\u4f1a\u5bf9\u5176\u6267\u884c\u6240\u9700\u7684\u64cd\u4f5c;<\/p>\n
\n1.\u4e8b\u4ef6\u4f7f\u7528\u4e8b\u4ef6\u5b9a\u4e49\u8005\u7684\u7279\u6743\u8fdb\u884c\u6267\u884c:\u5982\u679c\u5b9a\u4e49\u8005\u65e0\u6743\u6267\u884c\u67d0\u4efb\u52a1,\u5219\u4e8b\u4ef6\u65e0\u6cd5\u6267\u884c\u8be5\u4efb\u52a1;
\n2.\u793a\u4f8b
\n 1.user1@srv1\u53ea\u80fd\u4e3amyschema\u521b\u5efaSELECT\u4e8b\u4ef6:
\n CREATE EVENT e_store_ts
\n ON SCHEDULE EVERY 10 SECOND
\n DO INSERT INTO myschema.mytable VALUES (UNIX_TIMESTAMP());
\n 2.\u7531\u4e8e\u7f3a\u5c11INSERT\u7279\u6743,\u8be5\u4e8b\u4ef6\u4e0d\u4f1a\u5728\u8868\u4e2d\u521b\u5efa\u4efb\u4f55\u884c;
\n 3.\u53ef\u4ee5\u901a\u8fc7\u9519\u8bef\u65e5\u5fd7\u67e5\u770b\u5bf9\u5e94\u7684\u4fe1\u606f;<\/p>\n
\n1.SHOW CREATE EVENT event_name:
\n 1.\u6b64\u8bed\u53e5\u663e\u793a\u91cd\u65b0\u521b\u5efa\u7ed9\u5b9a\u4e8b\u4ef6\u6240\u9700\u7684CREATE EVENT\u8bed\u53e5;
\n 2.\u5fc5\u987b\u63d0\u4f9b\u4e8b\u4ef6\u540d\u79f0\u624d\u80fd\u67e5\u770b\u8be5\u4e8b\u4ef6\u7684\u76f8\u5173\u4fe1\u606f;
\n2.SHOW EVENTS:
\n 1.\u6b64\u8bed\u53e5\u4e3aMySQL\u6269\u5c55;
\n 2.\u5b83\u53ef\u8fd4\u56de\u4e8b\u4ef6\u7684\u7279\u5f81,\u5982\u6570\u636e\u5e93\/\u540d\u79f0\/\u7c7b\u578b\/\u521b\u5efa\u8005\u4ee5\u53ca\u521b\u5efa\u548c\u4fee\u6539\u65e5\u671f;
\n 3.\u6b64\u8bed\u53e5\u6709\u4e00\u4e2a\u4f18\u70b9:\u53ef\u57fa\u4e8eLIKE\u6a21\u5f0f\u6216WHERE\u5b50\u53e5\u4e2d\u63d0\u4f9b\u7684\u6761\u4ef6\u6765\u663e\u793a\u7279\u5b9a\u4e8b\u4ef6
\n3.INFORMATION_SCHEMA.EVENTS;<\/p>\n
\n1.\u4f7f\u7528\u5982\u4e0b\u8bed\u6cd5\u53ef\u663e\u5f0f\u5220\u9664\u4e8b\u4ef6:DROP EVENT [IF EXISTS] [schema_name.]event_name;
\n2.\u4f7f\u7528IF EXISTS\u53ef\u9632\u6b62\u56e0\u5c1d\u8bd5\u5220\u9664\u4e0d\u5b58\u5728\u7684\u4e8b\u4ef6\u800c\u51fa\u73b0\u7684\u9519\u8bef;
\n3.\u60a8\u5fc5\u987b\u5bf9\u5305\u542b\u8981\u5220\u9664\u7684\u4e8b\u4ef6\u7684\u6570\u636e\u5e93\u62e5\u6709EVENT\u7279\u6743;<\/p>\n
\nb<\/p>\n
\n1.MySQL\u652f\u6301\u4f7f\u7528SIGNAL\u548cRESIGNAL:
\n 1.\u53ef\u7528\u4e8e\u5f15\u53d1\u7279\u5b9a\u7684SQLSTATE;
\n 2.\u4e0e\u5176\u4ed6\u8bed\u8a00\u4e2d\u7684\u5f02\u5e38\u5904\u7406\u7c7b\u4f3c;
\n 3.\u5728\u5904\u7406\u9519\u8bef\u65f6\u7528\u4e8e\u9ad8\u7ea7\u6d41\u63a7\u5236;
\n 4.\u8fd9\u4e9b\u547d\u4ee4\u4e3a\u5b58\u50a8\u4f8b\u7a0b\u548c\u89e6\u53d1\u5668\u63d0\u4f9b\u4e86\u4e00\u79cd\u5c06\u9519\u8bef\u8fd4\u56de\u7ed9\u5e94\u7528\u7a0b\u5e8f\u6216\u6700\u7ec8\u7528\u6237\u7684\u65b9\u6cd5;
\n2.\u4f7f\u7528SIGNAL\u629b\u51fa\u9519\u8bef\u6216\u8b66\u544a\u72b6\u6001:
\n 1.SIGNAL\u7528\u4e8e\u5411\u5904\u7406\u7a0b\u5e8f,\u5e94\u7528\u7a0b\u5e8f\u7684\u5916\u4fa7\u90e8\u5206\u6216\u5ba2\u6237\u673a\u63d0\u4f9b\u9519\u8bef\u4fe1\u606f;
\n 2.\u4f8b\u5982,\u5728\u5b58\u50a8\u8fc7\u7a0b\u4e2d\u4f7f\u7528SIGNAL\u5411\u8c03\u7528\u8be5\u5b58\u50a8\u8fc7\u7a0b\u7684\u4ee3\u7801\u629b\u51fa\u9519\u8bef;\u8be5\u4ee3\u7801\u53ef\u4ee5\u4ee5\u9002\u5f53\u7684\u65b9\u5f0f\u5904\u7406\u8be5\u9519\u8bef;
\n3.\u4f7f\u7528RESIGNAL\u8f6c\u53d1\u5148\u524d\u7684SIGNAL\u6240\u5f15\u53d1\u7684\u9519\u8bef\u6216\u8b66\u544a\u72b6\u6001;
\n 1.RESIGNAL\u7528\u4e8e\u5728\u6761\u4ef6\u5904\u7406\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u4f20\u9012\u53ef\u7528\u7684\u9519\u8bef\u6761\u4ef6\u4fe1\u606f;
\n 2.\u53ef\u5728\u5b58\u50a8\u8fc7\u7a0b\u6216\u51fd\u6570,\u89e6\u53d1\u5668\u6216\u4e8b\u4ef6\u5185\u7684\u590d\u5408\u8bed\u53e5\u4e2d\u4f7f\u7528RESIGNAL;
\n 3.\u4f8b\u5982,\u5982\u679c\u5b58\u50a8\u8fc7\u7a0bp\u8c03\u7528\u4e86\u5b58\u50a8\u8fc7\u7a0bq,\u4e14q\u4f7f\u7528SIGNAL\u629b\u51fa\u4e00\u4e2a\u9519\u8bef,\u5219p\u53ef\u58f0\u660e\u4e00\u4e2a\u5904\u7406\u7a0b\u5e8f,\u4ee5\u5904\u7406\u6765\u81eaq\u7684\u4fe1\u53f7;p \u4e2d\u7684\u5904\u7406\u7a0b\u5e8f\u53ef\u4f7f\u7528RESIGNAL\u8bed\u53e5\u5411\u8c03\u7528p\u7684\u4ee3\u7801\u629b\u51fa\u76f8\u540c\u7684\u9519\u8bef\u4fe1\u606f;<\/p>\n
\n1.\u5728ORACLE\u4e2d\u52a8\u6001\u6267\u884csql\u8bed\u53e5\u4f7f\u7528:EXECUTE IMMEDIATE ‘sql_statement’;
\n2.\u5728MySQL\u4e2d\u52a8\u6001\u6267\u884csql\u7684\u8bed\u6cd5:
\n 1.PREPARE stmt_name FROM preparable_stmt;
\n 2.EXECUTE stmt_name [USING@var_name [,@var_name ]…];
\n 3.{DEALLOCATE | DROP} PREPARE stmt_name;
\n3.\u4f8b\u5b50:
\n 1.\u51c6\u5907sql\u8bed\u53e5:SET v_sql= concat(‘SELECT’, ‘ * ‘, ‘ FROM ‘, ‘ DUAL;’);
\n 2.SET @v_sql=v_sql; — \u6ce8\u610f\u5f88\u91cd\u8981,\u5c06\u8fde\u6210\u6210\u7684\u5b57\u7b26\u4e32\u8d4b\u503c\u7ed9\u4e00\u4e2a\u53d8\u91cf,\u53ef\u4ee5\u4e4b\u524d\u6ca1\u6709\u5b9a\u4e49,\u4f46\u8981\u4ee5@\u5f00\u5934;
\n 3.PREPARE stmt FROM @v_sql; — \u9884\u5904\u7406\u9700\u8981\u6267\u884c\u7684\u52a8\u6001SQL,\u5176\u4e2dstmt\u662f\u4e00\u4e2a\u53d8\u91cf;
\n 4.EXECUTE stmt; — \u6267\u884cSQL\u8bed\u53e5,\u5982\u679csql\u8bed\u53e5\u4e2d\u6709\u53d8\u91cf\u7684\u8bdd,\u53ef\u4ee5\u4f7f\u7528USING\u5b50\u53e5\u540e\u9762\u8ddf\u53d8\u91cf\u7684\u503c;
\n 5.DEALLOCATE PREPARE stmt; — \u91ca\u653e\u6389\u9884\u5904\u7406\u6bb5;<\/database><\/p>\n","protected":false},"excerpt":{"rendered":"