ERROR 1005: Can't create table (errno: 121) errno 121 means a duplicate key error. Probably the table already exists in the InnoDB internal data dictionary, though the .frm file for the table has been deleted. This is themost common reason for gettin
-- 只复制表结构 create table city1 like city; INSERT INTO test2 SELECT * FROM test; -- 上面的表必须存在 -- 复制整张表的数据 create table test2 select * from test -- create database xxx charset-- create table xxx (id int,xxxxxx)-- drop table-- drop database-- al
create table as select * from和insert into select from两种表复制语句区别 create table targer_table as select * from source_table insert into target_table(column1,column2) select column1,column2 from source_table 以上两句都是将源表source_table的记录插入到目标表target_table,但两句又
在create table的语句中,key和index混淆在一起,官方手册中的解释是这样: KEY is normally a synonym for INDEX. The key attribute PRIMARY KEY can also be specified as just KEY when given in a column definition. This was implemented for compatibility with other database systems.
sqlserver不能直接create table as select 在sqlserver 下想复制一张表的,想到oracle下直接create table xxx as select * from ....即可.但是结果却是错误的,baidu一下发现.sqlserver的语法是 : select * into tablenew from tableold Insert into select 与create table as的性能测试及create table 2013-10-05 09: