如果是create table like,则execute command的时候会调用mysql_create_like_table,这里会打开源表(like之后的表,open_tables());之后开始开始创建新的表定义文件,创建新的表定义文件前会持有LOCK_open,创建完就释放;如果源表是information_schema的表,则通过mysql_create_l
mysql_create_table_no_lock(), create_table_impl(), rea_create_base_table(). Execution of this code is the runtime implementation of the CREATE TABLE statement, and eventually leads to: dd::create_table(), to create the table in the Data Dictionary, ...
A table can have only one PRIMARY KEY. The name of a PRIMARY KEY is always PRIMARY, which thus cannot be used as the name for any other kind of index. If you do not have a PRIMARY KEY and an application asks for the PRIMARY KEY in your tables, MySQL returns the first UNIQUE ...
I'm accessing MySQL via JDBC and issuing the query "SHOW CREATE TABLE <tablename>" when I get the result set back the columns return are of type VARBINARY (-3) equivalent to the java byte[] type. Question becomes is there a way to have the returned columns for a show command Cast ...
mybatis进行数据库建表 CREATE command denied to user 'root'@'127.0.0.1' for table 问题 产生原因: 数据库没有给用户相应的权限,查询mysql的user表,就会发现建表权限为:N。 解决办法: 给相就的帐号赋予权限。 执行语句: updateusersetSelect_priv='Y',Insert_priv='Y',Update_priv='Y',Delete_priv='...
tbl 的重放(会处于 Waiting for table metadata lock 状态): # begin; select count(*) from db1.tbl for update; # 等待几秒后(大于long_query_time的配置即可),再 commit set global slow_query_log=on; set global log_slow_replica_statements=on; mysql> show variables like '%slow%'; +---+-...
1. create table table1 as select * from table2 where 1=2; 创建一个表结构与table2一模一样的表,只复制结构不复制数据; 2.create table table1 as select * from table2 ; 创建一个表结构与table2一模一样的表,复制结构同时也复制数据;
当主从复制采用 binlog 的行模式时,如果从库启用 slow_query_log、log_slow_replica_statements 且从库重放 CREATE TABLE、DROP TABLE 时因特殊情况(比如被...
今天在表中用Navicat连接服务器上的mysql账号进行建表,报了个这样类似的错, CREATE command denied to user for table 是数据库权限设置的问题,所以无法进行创建。只需给对应账户,赋予所有的权限即可: mysql>grant all privileges on data.* to work; //data是数据库,work是操纵data的用户 ...
I have encountered a strange response to the 'show create table' command. The response provide erroneous SQL statement. The SQL commands I'm running are as follows: STATUS; DROP DATABASE IF EXISTS `apollodb-bug`; CREATE DATABASE `apollodb-bug` /*!40100 DEFAULT CHARACTER SET utf8mb4 COLLA...