MySQL数据库存储过程动态表建立(PREPARE)_MySQL

DELIMITER $$DROP PROCEDURE IF EXISTS `gpsdata`.`sp_test`$$CREATE DEFINER=`root`@`localhost` PROCEDURE `sp_test`(	gpstime_ varchar(128),	gpsname_ varchar(128),	gpsinfo_ varchar(256))BEGINDECLARE tbname varchar(50) DEFAULT  '0';DECLARE v_sql varchar(1024) DEFAULT '0';SET v_sql=CONCAT('select * from  ', tbname ,' where gpsname = ',gpsname_,'  order by gpstime desc limit 1');SET @lastdata = v_sql;PREPARE lastdata FROM @lastdata;   EXECUTE lastdata;DEALLOCATE PREPARE lastdata;  select v_sql;END$$DELIMITER ;