《Mysql必读mysql动态游标与mysql存储过程游标(示例)》要点: 本文介绍了Mysql必读mysql动态游标与mysql存储过程游标(示例),希望对您有用。如果有疑问,可以联系我们。
-- 树立测试表和数据 create table webuser (username varchar(10)); insert into webuser values ('a1'),('a2'),('a3'),('b1'),('b2'),('b3'); commit;MYSQL学习
-- 建立存储进程 drop procedure if exists dynamic_cursor; delimiter // www.jbxue.com CREATE PROCEDURE dynamic_cursor (IN p_name varchar(10)) BEGIN ??? DECLARE done INT DEFAULT 0; ??? DECLARE v_username varchar(10); ??? DECLARE cur CURSOR for( SELECT username from webuser_view); ??? DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;MYSQL学习
??? DROP VIEW IF EXISTS webuser_view;MYSQL进修
??? SET @sqlstr = "CREATE VIEW webuser_view as "; ??? SET @sqlstr = CONCAT(@sqlstr,"SELECT username FROM webuser WHERE username like '",p_name,"%'");MYSQL进修
??? PREPARE stmt FROM @sqlstr; ??? EXECUTE stmt; ??? DEALLOCATE PREPARE stmt;MYSQL进修
??? OPEN cur; ??? f_loop:LOOP ??? FETCH cur INTO v_username; ??? IF done THEN ??????? LEAVE f_loop;? ??? END IF; ??? SELECT v_username;??? ??? END LOOP f_loop; ??? CLOSE cur; END; // delimiter ;MYSQL进修
-- 测试 call dynamic_cursor('a');MYSQL进修 编程之家PHP培训学院每天发布《Mysql必读mysql动态游标与mysql存储过程游标(示例)》等实战技能,PHP、MYSQL、LINUX、APP、JS,CSS全面培养人才。 (编辑:李大同)
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