create table 表名( a ...,b...,...constraint 约束名 primary key(a,
create table 表名( a ...,b...,...constraint 约束名 primary key(a,
create +表名和create table+表名什么区别啊
数据库中create table biao(id int(8) primary key,name varchar(10)
PRIMARY KEY 约束唯一标识数据库表中的每条记录.
CREATE TABLE 教师 (教师编号 integer,姓名 text,constraint [index] pri
The key ______on the table when I leave.A..was left B.will b
the key __ on the table when i leave A.was left B.will be le
The key ( )on the table when i leave.A:was left B:is left C:
create table table_name (.) on primary 这儿的 on primary 是为了说明什
Alice found a key( ) the door on a small table
a key is on the table改为复数句
select a,b from 表名 group by a,b order by count(*) desc