sql drop database if exists

C # Connecting to SQL Server databases For the different. NET data provider, ADO. NET uses different connection objects to connect to the database. These connection objects mask the specific implementation details, and provide a unified

Li Wu:Heng Learn to think together, honouring teachers save Thanksgiving. Leaf See root three return to one, rivers the same oneness.Meekness Conscience Lord, willing to do without regrets to the most bitter. Reading exercises to keep the body and

--whether the database existsIF exists(SELECT * fromMaster.. sysdatabasesWHEREName=N'Library name')PRINT 'exists'ELSE PRINT 'Not exists'-----------------determine if the name of the table to be created existsIF exists(SELECT *

Original: SQL Server 2016 new feature: DROP IF EXISTS??When we write T-SQL to delete an object (table, stored procedure, etc.), it is customary to use the IF statement to determine whether the object exists and then drop it, for example:Old

1 determining whether a database existsSQL codeif exists (SELECT * from sys.databases WHERE name = ' database name ')drop database [DB name] if exists (SELECT * from sys.databases WHERE name = ' database name ')drop database [DB name]2 Determining

9. Create a databaseDatabase StructureSystem DatabaseCreate a databaseView DatabaseDelete DatabaseSummaryAfter you design and install the Microsoft SQL Server 2000 database, you can learn how to create a database. Compared with earlier versions, SQL

Use if exists to build a table "go"1 Determine if the database has SQL codeif exists (SELECT * from sys.databases WHERE name = ' database name ')drop database [DB name] if exists (SELECT * from sys.databases WHERE name = ' database name ')drop

--查看对象是否已经存在  --数据库是否存在   --if exists (select * from sys.databases where name = ’数据库名’)    --  drop database [数据库名]      if exists(select * from sys.databases where name=‘FGM_POS‘)  print ‘存在‘--drop database [数据库名]   --表是否存在   --if exists (select *

SQL Server determines whether an object exists1 Determine if the database has SQL codeif exists (SELECT * from sys.databases WHERE name = ' database name ') drop database [DB name]2 Determine if the table has SQL codeif exists (select * from

SQL server determines whether a database, table, column, or view exists. SQL server 1. Determine whether the database exists If exists (select * from sys. databases where name = 'database name ')Drop database [database name] 2. Check whether the