mysql / sqlserver database sql statement Exercise

在test数据库上建表
create table DemoTable(Name VarChar(20),Age VarChar(3));
create table ThisTable(Firstname Text,Lastname Text);
mysql：
mysql> create Table get0(Word nvarchar(31) NOT NULL,Comment nvarchar(50) NOT NULL);
mysql报错的写法：
mysql> create Table get0(Word nvarchar(31) COLLATE Chinese_PRC_CI_AS NOT NULL,Comment nvarchar(50) COLLATE Chinese_PRC_CI_AS NOT NULL);
ERROR 1273 (HY000): Unknown collation: 'Chinese_PRC_CI_AS'
mysql> create Table get(Word nvarchar(31) NOT NULL,Comment nvarchar(50) NOT NULL);
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'get(Word nvarchar(31) NOT NULL,Comment nvarchar(50) NOT NULL)' at line 1
mysql> CREATE TABLE OFFICES(OfficeID nvarchar(4),OfficeName nvarchar(10));
mysql> create Table Singer(SingerID int AUTO_INCREMENT not NULL,SingerName nvarchar(31) NOT NULL,Birthday datetime not null,PRIMARY KEY (SingerID ASC));
IDENTITY、COLLATE Chinese_PRC_CI_AS是sql server的写法：
create Table Singer(SingerID int IDENTITY(1,1) not NULL,SingerName nvarchar(31) COLLATE Chinese_PRC_CI_AS NOT NULL,Birthday datetime not null);
create Table userphoto(ID int IDENTITY(1,1) not NULL,UserName nvarchar(31) COLLATE Chinese_PRC_CI_AS NOT NULL,Old int not null,photo image);
create Table get(Word nvarchar(31) COLLATE Chinese_PRC_CI_AS NOT NULL,Comment nvarchar(50) COLLATE Chinese_PRC_CI_AS NOT NULL);