/* SQL-创建表之前判断表是否存在 LDH @ 2018-5-16*/USE TestDBGO-- 方法 1IF OBJECT_ID(N'Books', 'U') IS NOT NULLBEGIN 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 