Mysql_frequently_used_commands

Wed, 22 Sep 2021 10:39:22 +0800

###Note for frequently used sql commands, just in case forget when long time don’t use it

let’s say you want a below table:

#	name_of column	type	length	can empty	master key
1	id	int	12	no	yes
2	topic	varchar	255	no	no
3	content	longtext		yes	no
4	tag	varchar	255	yes	no
5	insert_time	datetime		yes	no

to create above table:

CREATE TABLE IF NOT EXISTS `mq_info` ( 
 `id` INT(12) UNSIGNED AUTO_INCREMENT COMMENT 'auto increase id',
 `topic` VARCHAR ( 255 ) NOT NULL COMMENT 'topic name', 
 `content` longtext NOT NULL COMMENT 'content', 
 `tag` VARCHAR ( 255 ) COMMENT 'tag of this Message Queue', 
 PRIMARY KEY ( `id` ) 
) ENGINE = INNODB DEFAULT CHARSET = utf8;

Query all data in table:

Database on Council of Elrond

Mysql_frequently_used_commands