mysql> select precision from Product; ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'precision from Product' at line 1 mysql> select `precisi…

今天在使用hibernate关联映射导出表的时候因为映射了一个表名为option,是MYSQL的关键字,总是生成错误,一开始以为是映射文件和代码问题,检查不出问题才想到可能用到数据库的保留关键字了,查了一下才知道.看来命名还是得注意点. ADD ALL ALTER ANALYZE AND AS ASC ASENSITIVE BEFORE BETWEEN BIGINT BINARY BLOB BOTH BY CALL CASCADE CASE CHANGE CHAR CHARACTER CHECK…

原文链接:http://www.tuicool.com/articles/Brauq2e 从网上找了一个mysql的保留字列表,仅供参考. ADD ALL ALTER ANALYZE AND AS ASC ASENSITIVE BEFORE BETWEEN BIGINT BINARY BLOB BOTH BY CALL CASCADE CASE CHANGE CHAR CHARACTER CHECK COLLATE COLUMN CONDITION CONNECTION CONSTRAINT C…

mysql保留字段小数点后两位小数用函数:truncate(s.price,2)即可.如果想用四舍五入的话用round(s.price,2).  …

Mysql每天执行计划,保留最新的10条数据,其余的删除 1.Mysql 保留最新的10条数据 sql语句: DELETE tb FROM tbname AS tb,( SELECT id FROM tbname ORDER BY id desc LIMIT 9,1 ) AS tmp WHERE tb.id<tmp.id 2.新建存储过程(Navicat中) CREATE PROCEDURE test() BEGIN DELETE tb FROM testdata AS tb,( SELECT…

mysql FULL JOIN关键字 语法 作用:只要其中某个表存在匹配,FULL JOIN 关键字就会返回行.“富瑞华”牌大理石构件 语法:SELECT column_name(s) FROM table_name1 FULL JOIN table_name2  ON table_name1.column_name=table_name2.column_name 注释:在某些数据库中, FULL JOIN 称为 FULL OUTER JOIN. mysql FULL JOIN关键字 示例 //…

mysql RIGHT JOIN关键字 语法 作用:RIGHT JOIN 关键字会右表 (table_name2) 那里返回所有的行,即使在左表 (table_name1) 中没有匹配的行.惠州大理石方箱-惠州大理石方箱价格 语法:SELECT column_name(s) FROM table_name1 RIGHT JOIN table_name2  ON table_name1.column_name=table_name2.column_name 注释:在某些数据库中, RIGHT JO…

mysql LEFT JOIN关键字 语法 作用:LEFT JOIN 关键字会从左表 (table_name1) 那里返回所有的行,即使在右表 (table_name2) 中没有匹配的行. 大理石构件 语法:SELECT column_name(s) FROM table_name1 LEFT JOIN table_name2  ON table_name1.column_name=table_name2.column_name 注释:在某些数据库中, LEFT JOIN 称为 LEFT OUT…

mysql INNER JOIN关键字 语法 作用:在表中存在至少一个匹配时,INNER JOIN 关键字返回行.大理石平台维修 语法:SELECT column_name(s) FROM table_name1 INNER JOIN table_name2 ON table_name1.column_name=table_name2.column_name 注释:INNER JOIN 与 JOIN 是相同的. mysql INNER JOIN关键字 示例 //列出所有人的定购 SELECT P…

js保留的关键字 break else new var case finally return void catch for switch while continue function this with default if throw   delete in try   do instanceof typeof   还有一些关键字用于未来扩展语言功能的,也不建议用作js标识符 abstract enum int short boolean export interface static b…