`d`int(11)DEFAULTNULL,PRIMARYKEY(`id`),UNIQUEKEY`c`(`c`))ENGINE=InnoDB;insert into tvalues(null,1,1);insert into tvalues(null,2,2);insert into tvalues(null,3,3);insert into tvalues(null,4,4);create table t2 like t
-- 创建父表 CREATE TABLE country ( country_id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT, country VARCHAR(50) NOT NULL, PRIMARY KEY(country_id) )ENGINE=INNODB DEFAULT CHARSET=utf8 -- 创建子表 关联country_id CREATE TABLE city ( city_id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT, country_id ...
->row_create_index_for_mysql(row/row0mysql.c) ->create_index(hanler/ha_innodb.cc) ->row_table_add_foreign_constraints(row/row0mysql.c) mysql_create_table函数一开始就去持有LOCK_lock_db mutex,对creating_table++,这个值对应Com_create_table。 接下来rea_create_table首先会调用mysql_create_...
id是一个INT列，用作主键列。title是VARCHAR列，不能为NULL。start_date和end_date是date列，可以为NULL。要执行CREATE TABLE语句：首先，使用具有CREATE权限的帐户从终端使用MySQL命令登录MySQL服务器：mysql -u root -p 它将提示你输入密码：输入密码：*** 接下来，创建一个名为test的新数据库：CREATE DATABASE...
$sql="CREATE TABLE runoon_tbl( ". "runoon_id INT NOT NULL AUTO_INCREMENT, ". "runoon_title VARCHAR(100) NOT NULL, ". "runoon_author VARCHAR(40) NOT NULL, ". "submission_date DATE, ". "PRIMARY KEY ( runoon_id ))ENGINE=InnoDB ...
CREATETABLEt1 (c1VARCHAR(32765)NOTNULL, c2VARCHAR(32766)NOTNULL) ENGINE=InnoDBCHARACTERSETlatin1; Query OK,0rowsaffected (0.02sec) 以下语句创建表 t2 失败,因为虽然字段的长度没有超过 65535 字节的限制,但是增加 2 个记录长度的字节之后超过了该限制. ...
InnoDB存储引擎设计了4种不同类型的行格式,分别是Compact、Redundant、Dynamic和Compressed行格式。可通过如下命令查看默认值: show variableslike'innodb_default_row_format' 可以在创建或修改表的语句中指定行格式: CREATETABLE表名 (列的信息) ROW_FORMAT=行格式名称 ...
mysql>CREATETABLErunoob_tbl( ->runoob_idINTNOTNULLAUTO_INCREMENT, ->runoob_titleVARCHAR(100)NOTNULL, ->runoob_authorVARCHAR(40)NOTNULL, ->submission_dateDATE, ->PRIMARYKEY(runoob_id) ->)ENGINE=InnoDBDEFAULTCHARSET=utf8; Query OK,0ROWSaffected(0.16sec) ...
CREATE TABLE test.t1 (a int) ENGINE = "INNODB"; In the bison grammar file, the rule implementing the CREATE TABLE statement iscreate_table_stmt. The tree created is an object of classPT_create_table_stmt. This parse tree node has several related nodes, such as: ...
create table t( id int )engine=innodb partition by range(id)( partition p0 values less than(10), partition p1 values less than(20) ); 之后查看表在磁盘上的物理文件,启动分区之后,表不再由一个.ibd文件组成了,而是由建立分区时的各个分区.ibd文件组成。表t根据列id进行分区,所以数据时根据列id的值...