/*
SQL-创建表之前判断表是否存在
LDH @ 2018-5-16
*/
USE TestDB
GO
-- 方法 1
IF OBJECT_ID(N'Books', 'U') IS NOT NULL
BEGIN
DROP TABLE Books;
END;
-- 方法 2
/*
IF EXISTS (SELECT * FROM sys.objects WHERE name = 'Books')
BEGIN
DROP TABLE Books;
END;
*/
-- 方法 3
/*
IF EXISTS (SELECT COUNT(1) FROM sys.tables WHERE name = 'Books')
BEGIN
DROP TABLE Books;
END;
*/
-- Create a new table.
CREATE TABLE Books (
BookId INT NOT NULL,
BookName CHAR(50) NOT NULL,
Price MONEY );
-- Insert data into the table.
INSERT INTO Books(BookId,BookName,Price)VALUES('1001',N'人生若只如初见','88');
INSERT INTO Books(BookId,BookName,Price)VALUES('1002',N'SQl Server 2017','88');
INSERT INTO Books(BookId,BookName,Price)VALUES('1003',N'SQL必知必会','50');
INSERT INTO Books(BookId,BookName,Price)VALUES('1004',N'沥川往事','80');
INSERT INTO Books(BookId,BookName,Price)VALUES('1005',N'红楼梦','100');
INSERT INTO Books(BookId,BookName,Price)VALUES('1006',N'三国演义','100');
INSERT INTO Books(BookId,BookName,Price)VALUES('1007',N'西游记','120');
INSERT INTO Books(BookId,BookName,Price)VALUES('1008',N'水浒传','100');
-- Select the table you created just now.
SELECT BookId ,
BookName ,
Price FROM dbo.Books
![](https://images2018.cnblogs.com/blog/326890/201805/326890-20180516105054349-2063080262.jpg)