It is a good practice as well to drop unwanted columns as well. I want SQL to check if the table exists … 6 Ways to Check if a Table Exists in SQL Server (T-SQL Examples) Posted on December 9, 2019 February 14, 2020 by Ian. The syntax is available starting SQL … It saves efforts for the SQL engine and improves query performance while retrieving fewer records for the output. The very common example is when we want to create a table in the database, we generally do a check for if the table exists in that particular database or not and if it exists, then we go ahead to drop it and create the table with the latest structure. IF EXISTS ( SELECT 1 FROM sys.objects WHERE object_id = object_id(N'[dbo]. [SALES] END; I have the following code (in a Stored Procedure) which works well.. One thing which works, but not very well is the line highlighted in green. When SQL Server drops a table, it also deletes all data, triggers, constraints, permissions of that table. DROP TABLE IF EXISTS [ALSO READ] How to check if a Table exists. Solution: Test the SQL Server table existence before dropping it with the IF EXISTS and DROP functions. And the following ALTER statement grabbed my attention: The above DDL Query is removing Columns and Constraints form the table, and if you notice there… If the table doesn’t exists it will not raise any error, it will continue executing the next statement in the batch. To determine if a table exists, it’s best to go against the sys.objects view by querying the object_id using the fully qualified name of the table. DROP INDEX [IF EXISTS] index_name1 ON table_name1, index_name2 ON table_name2, ...; SQL Server DROP INDEX statement examples We will use the sales.customers table from the sample database for the demonstration. DROP Column IF EXISTS. Moreover, SQL Server does not explicitly drop the views and stored procedures that reference the dropped table. Is this not the case? Sometimes we require to drop a column from a SQL table. Assume that you want to write a SQL Query in SQL Server which checks if the table exists in database and want to drop it , you can use the OBJECT_ID function to determine the table existence by passing the table name and the ‘U’ as parameters. The IF EXISTS clause conditionally removes the table if it already exists. @prdp Why do you suggest DROP TABLE IF Exists for SQL 2016 or Azure? It seems the truncate/reuse method would be more efficient than the DROP TABLE IF EXISTS on Sql Server 2016 and Azure Sql Database as well. The DROP_EXISTS clause is only for changing the definition of an index that already exists. The additional ‘type’ field in the where clause ensures that the table that is about to be dropped is a User table and not a system table. Most options involve querying a system view, but one of the options executes a system stored procedure, and another involves a function. – JDawg Jan 25 '17 at 0:59. DROP TABLE YourTableName; Solution: 4 (From SQL Server 2016) USE YourDatabaseName GO DROP TABLE IF EXISTS YourTableName; Note: The DROP TABLE statement will fail if any other table is referencing the table to be dropped through a foreign key constraint. This has NOT changed in SQL Server 2016. DROP TABLE IF EXISTS dbo.Customers. SQL Server 2016 Gives Us ‘DROP INDEX IF EXISTS’ At least index cleanup gets syntactically easier in SQL Server 2016: DROP INDEX gets a new conditional clause to check for existence. I was going through some sample Scripts provided by Microsoft SQL Server team on their site, and was checking the JSON Sample Queries procedures views and indexes.sql script file. In Sql Server 2016 we can write a statement like below to drop a Table if exists. This article offers five options for checking if a table exists in SQL Server. [SALES]') AND type in (N'U') ) BEGIN DROP TABLE [dbo]. 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