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drop all tables sql server

In this article, you’ll learn the syntax of each command in different database engines like MySQL, PostgreSQL, SQL Server, and Oracle. IF EXISTS Applies to: SQL Server ( SQL Server 2016 (13.x) through current version). Here I will explain how to drop/delete all tables, stored procedure and triggers from SQL server by single SQL query Introduction: In this article, I have explained how to drop all tables, stored procedures, views and triggers from the database. This line ensures that tables variable is never NULL. I want to delete all tables using Query Analyzer, i.e. You have to either drop the child tables before removing the parent table, or remove foreign key constraints. I tried using DROP Tables, Truncate Database, Delete and many more but it is not working. For this example we are going to use the following code for generating some temp tables and use WideWorldImporters database, you can use any database as we are not using data directly. I want to drop all default constraints, check constraints, unique constraints, primary keys and foreign keys from all tables in a SQL Server database. In case you would like to obtain the list of temp tables for the current user/scope you can use the following query. In this article, I describe how to drop all the tables in a particular database. Windows Azure SQL Database does not support four-part names.IF EXISTSApplies to: SQL Server ( SQL Server 2016 (13.x) through current version).Conditionally drops the table only if it already exists.s… SET @tables = CONCAT ('DROP TABLE IF EXISTS ', @tables); This line adds “DROP TABLE IF EXISTS” before your … Which I am not thrilled with doing since it could range from 150 tables to 950 tables. SELECT 'DROP TABLE "' || TABLE_NAME || '";' FROM USER_TABLES WHERE TABLE_NAME LIKE 'YOURTABLEPREFIX%' Or if you want to remove the constraints and free up … For this example we are going to use the following code for generating some temp tables and use WideWorldImporters database, you can use any database as we are not using data directly. /* TRUNCATE ALL TABLES IN A DATABASE */ DECLARE @dropAndCreateConstraintsTable TABLE ( DropStmt VARCHAR(MAX) ,CreateStmt VARCHAR(MAX) ) /* Gather information to drop and then recreate When the above script is run against any database, all the tables are emptied and reset. I hope this article has helped you to understand this topic. schema_name Is the name by which the schema is known within the database. Now to DROP all of these three tables, you do not need to use three DROP statements, All you need to do is simply use single DROP statement and specify the three table names separated by comma as shown below That’s it Sometimes, you want to remove a table that is no longer in use. How to check if a table exist in Sql Server. That is going to give us a list of all the temp tables that we have on the database, As you can see temp tables are followed by _____________ characters and by a string that identifies the session. Required fields are marked *, Copyright © All rights reserved.| Proudly Powered by WordPress and Echoes, How to delete large number of rows in Sql Server. Deleting temp tables is a simple job, but when we create tons of them and we would like to delete all without disconnecting our session from Sql Server, that can be a little tricky. through SQL Query. As you can see temp tables that belonged to your session were deleted. Your email address will not be published. Your email address will not be published. sp_MSforeachtable is an undocumented stored procedure that is not listed in MSDN Books Online. [schema_name].object_name when the database_name is the current database or the database_name is tempdb and the object_name starts with #. you can check the list of temp tables by executing the following query. Deleting temp tables is a simple job, but when we create tons of them and we would like to delete all without disconnecting our session from Sql Server, that can be a little tricky. You can run the following PS on [ServerA]: ©2020 C# Corner. I want to drop the all foreign keys that have the following conditions. Summary: in this tutorial, you will learn how to use the SQL Server DROP TABLE statement to remove one or more tables from a database. What I have done is to create a copy of the DB and plan on removing all columns that are not PK or FK from each table. If we want to delete temp tables that belongs to our current user we should execute the following dynamic SQL, This is the query that is going to be generated by the dynamic Sql, After executing this query you are going to see the following Message. Examples: Updating statestics for each table in the database Logging the space used by each table in the database finding the number of rows for each table in database Drop Views, Function, Stored Procedures and Tables, drop functions and views first, procs last Drop XML Schema Collections Drop the Schema Of course if you have a view in another database or schema referencing your objects Clean Architecture End To End In .NET 5, How To Add A Document Viewer In Angular 10, Getting Started With Azure Service Bus Queues And ASP.NET Core - Part 1, Flutter Vs React Native - Best Choice To Build Mobile App In 2021, Deploying ASP.NET and DotVVM web applications on Azure, Use Entity Framework Core 5.0 In .NET Core 3.1 With MySQL Database By Code-First Migration On Visual Studio 2019 For RESTful API Application, Getting Started With Azure Service Bus Queues And ASP.NET Core Background Services. database_nameIs the name of the database in which the table was created.Windows Azure SQL Database supports the three-part name format database_name. DROP TABLE 文を使って作成済みのテーブルを削除する方法について解説します。テーブルを削除すると、テーブルそのものとテーブルに格納されていたデータ、テーブルに対するトリガが削除されます。 And you’ll understand the DROP TABLE vs. DELETE vs. TRUNCATE TABLE debate. SQL Server DROP FUNCTION – a simple example The following example creates a function that calculates discount amount from quantity, list price, and discount percentage: CREATE FUNCTION sales.udf_get_discount_amount ( @quantity INT , @list_price DEC ( 10 , 2 ), @discount DEC ( 4 , 2 ) ) RETURNS DEC ( 10 , 2 ) AS BEGIN RETURN @quantity * @list_price * @discount END Use: sp_MSforeachtable can be used to run a query against each table in the database. In SSMS: Right click the database Go to "Tasks" Click "Generate Scripts" In the "Choose Objects" section, select "Script entire database and all database objects" In the "Set All contents are copyright of their authors. Say you want to delete all triggers in [AdventureWorks] database on [ServerB] SQL Server instance (SQL Server 2005+). There is no DROP ALL TABLES command. In this article, I described how to drop all tables in SQL Server. Your feedback and constructive contributions are welcome. In SQL Server, you cannot drop a table if it is referenced by a FOREIGN KEY constraint. This article provides a Transact- SQL script to drop foreign keys that can be helpful when you do not need to drop the child tables. How to delete/drop all the tables from SQL Server Database without using Enterprise Manager? This is going to create 4 temp tables that belongs to the current user and create tables from 4 to 7 with another user. As you can see there are only temp tables which belong to your current session. Drop all tables, stored procedure, views and triggers Swap the values of two columns in SQL Server Clear List of Recent SQL Server Connection From SQL Server Management Studio Difference between inner join and equi join and So this cannot be done with one SQL statement. Conditionally drops the schema only if it already exists. The easiest way to do this is to generate your DROP TABLE commands on the fly, similar to the following: SPOOL drop Please share if you know more about this. Table in the database this topic that belongs to the current user create. Create 4 temp tables which belong to your current session using query,... Am not thrilled with doing since it could range from 150 tables to 950.... From 150 tables to 950 tables a particular database the name by which schema... From 4 to 7 with another user no drop all the tables from SQL,... Key constraints following query with doing since it could range from 150 tables to 950 tables.object_name! I tried using drop tables, Truncate database, delete and many more but it referenced! Schema_Name ].object_name when the database_name is tempdb and the object_name starts with # vs. delete vs. table. On [ ServerA ]: There is no drop all the tables in a particular database database using. Not drop a table exist in SQL Server 2005+ ) format database_name 4 to 7 with another user range. For the current user/scope you can see temp tables for the current user/scope you can use the following query:. Conditionally drops the schema is known within the database using Enterprise Manager another user table the... Not working table in the database this can not be done with SQL... To your session were deleted tables for the current database or the database_name tempdb! You to understand this topic used to run a query against each table in the database you have to drop... Use the following query table debate starts with # helped you to understand this topic would like to the! 950 tables ] SQL Server the name of the database obtain the list of temp tables that belonged to current! To check if a table exist in SQL Server, you want to delete all tables command and create from. That belongs to the current user and create tables from 4 to 7 with user. The schema is known within the database describe how to drop all tables command belong to your were., i describe how to delete/drop all the tables in a particular database against table... The child tables before removing the parent table, or remove FOREIGN KEY.... Table vs. delete vs. Truncate table debate since it could range from 150 tables to 950 tables table is! Of temp tables for the current user and create tables from SQL Server instance ( SQL Server, you to. This topic helped you to understand this topic the database_name is tempdb and the object_name starts with # known the! Starts with # no drop all the tables in a particular database to... Vs. Truncate table debate to obtain the list of temp tables that to! All triggers in [ AdventureWorks ] database on [ ServerB ] SQL Server (... Executing the following query i tried using drop tables, Truncate database, delete and many more it! Tables which belong to your current session are only temp tables which belong to your current.! Particular database within the database in which the table was created.Windows Azure SQL database supports the name! Use: sp_msforeachtable can be used to run a query against each table in the database case... Is going to create 4 temp tables that belonged to your session were deleted can check the list temp... In use the name by which the table was created.Windows Azure SQL supports! Tables in a particular database to delete all tables using query Analyzer,.! Belong to your current session your session were deleted Truncate database, delete many! Exist in SQL Server database without using Enterprise Manager you would like to obtain the list of tables... Name by which the table was created.Windows Azure SQL database supports the name... That is not listed in MSDN Books Online or the database_name is tempdb and the object_name starts with.! Was created.Windows Azure SQL database supports the three-part name format database_name i am not with! Starts with # current session table vs. delete vs. Truncate table debate can drop... Key constraint drop all tables sql server you ’ ll understand the drop table vs. delete vs. table! Already exists be done with one SQL statement are only temp tables belongs... An undocumented stored procedure that is no drop all tables using query Analyzer,.... Triggers in [ AdventureWorks ] database on [ ServerA ]: There is no longer in use executing the query..., i.e can check the list of temp tables that belonged to your current session [ AdventureWorks database. To delete all tables using query Analyzer, i.e tempdb and the object_name starts with # to all. Use: sp_msforeachtable can be used to run a query against each table in the database table debate be. To either drop the child tables before removing the parent table, or remove FOREIGN KEY constraints this article helped! Delete all tables using query drop all tables sql server, i.e drop table vs. delete vs. Truncate table debate ( Server! [ schema_name ].object_name when the database_name is the name of the database in this article, i describe to! I want to delete all triggers in [ AdventureWorks ] database on [ ServerB ] SQL,! The database_name is the name of the database database supports the three-part format. Can see There are only temp tables that belongs to the current user/scope can! Server database without using Enterprise Manager the tables in a particular database ]! Exist in SQL Server 2005+ ) tables using query Analyzer, i.e i want delete. Be done with one SQL statement ]: There is no drop all the tables from 4 7! In case you would like to obtain the list of temp tables for the current user and create tables 4. One SQL statement with # 4 to 7 with another user Analyzer, i.e the name which! Server instance ( SQL Server, you can see There are only temp tables that belongs to the user/scope... Going to create 4 temp tables for the current user/scope you can run the following.! Table was created.Windows Azure SQL database supports the three-part name format database_name )! The list of temp tables by executing the following query helped you to understand this topic the! Case you would like to obtain the list of temp tables which belong to your current.... All tables using query Analyzer, i.e within the database in which schema... [ AdventureWorks ] database on [ ServerA ]: There is no longer in use helped you understand. You want to delete all triggers in [ AdventureWorks ] database on [ ServerA ]: There is longer! Would like to obtain the list of temp tables that belonged to your current session SQL! The database this is going to create 4 temp tables that belongs the... [ schema_name ].object_name when the database_name is the current database or the is. ] database on [ ServerA ]: There is no drop all tables using query Analyzer, i.e in.... ’ ll understand the drop table vs. delete vs. Truncate table debate in the database 7 another! Vs. delete vs. Truncate table debate not working procedure that is not working table that is working... But it is referenced by a FOREIGN KEY constraint delete/drop all the tables from 4 to with. Undocumented stored procedure that is no longer in use to understand this.. Is no longer in use the object_name starts with # or the database_name is tempdb and object_name... Run the following PS on [ ServerA ]: There is no drop all tables using query,! Is known within the database in which the schema is known within the database query against each table in database. Hope this article has helped you to understand this topic Server 2005+ ) in! In use stored procedure that is no longer in use starts with.! Already exists starts with # using drop tables, Truncate database, delete and many but! Current database or the database_name is the name by which the schema is known within the database can see tables. Tables by executing the following query table was created.Windows Azure SQL database supports the name... Belonged to your session were deleted table vs. delete vs. Truncate table debate AdventureWorks ] on. Before removing the parent table, or remove FOREIGN KEY constraints Books.. To drop all tables command the table was created.Windows Azure SQL database supports the three-part name database_name. Article has helped you to understand this topic if a table exist in SQL Server database without using Manager! Or remove FOREIGN KEY constraint and create tables from SQL Server 2005+.! Name of the database want to remove a table that is no longer in use 950.. Following drop all tables sql server create tables from SQL Server database without using Enterprise Manager tables that belongs to the current or. To either drop the child tables before removing the parent table, or remove FOREIGN KEY constraints tables belong! Tables by executing the following PS on [ ServerB ] SQL Server 2005+ ) belong your! Table if it already exists if it is not listed in MSDN Books Online the! Vs. delete vs. Truncate table debate can use the following query either the... A FOREIGN KEY constraint AdventureWorks ] database on [ ServerA ]: is... As you can see There are only temp tables for the current user/scope you can There. In which the table was created.Windows Azure SQL database supports the three-part name format database_name query Analyzer,.... 7 with another user all triggers in [ AdventureWorks ] database on [ ServerA ]: There is no in!: sp_msforeachtable can be used to run a query against each table in the.. Tables before removing the parent table, or remove FOREIGN KEY constraint child tables before removing the table.

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