How to Drop a Table If It Exists?

From SQL Server 2016 you can use

DROP TABLE IF EXISTS dbo.Scores

Reference: DROP IF EXISTS - new thing in SQL Server 2016

It will be in SQL Azure Database soon.

The ANSI SQL/cross-platform way is to use the INFORMATION_SCHEMA, which was specifically designed to query meta data about objects within SQL databases.

if exists (select * from INFORMATION_SCHEMA.TABLES where TABLE_NAME = 'Scores' AND TABLE_SCHEMA = 'dbo')
    drop table dbo.Scores;

Most modern RDBMS servers provide, at least, basic INFORMATION_SCHEMA support, including: MySQL, Postgres, Oracle, IBM DB2, and Microsoft SQL Server 7.0 (and greater).

Have seen so many that don't really work. when a temp table is created it must be deleted from the tempdb!

The only code that works is:

IF OBJECT_ID('tempdb..#tempdbname') IS NOT NULL     --Remove dbo here 
    DROP TABLE #tempdbname   -- Remoeve "tempdb.dbo"

In SQL Server 2016 (13.x) and above

DROP TABLE IF EXISTS dbo.Scores

In earlier versions

IF OBJECT_ID('dbo.Scores', 'U') IS NOT NULL 
DROP TABLE dbo.Scores; 

U is your table type

Or:

if exists (select * from sys.objects where name = 'Scores' and type = 'u')
    drop table Scores

There is an easier way

DROP TABLE IF EXISTS table_name;

I hope this helps:

begin try drop table #tempTable end try
begin catch end catch

I wrote a little UDF that returns 1 if its argument is the name of an extant table, 0 otherwise:

CREATE FUNCTION [dbo].[Table_exists]
(
    @TableName VARCHAR(200)
)
    RETURNS BIT
AS
BEGIN
    If Exists(select * from INFORMATION_SCHEMA.TABLES where TABLE_NAME = @TableName)
        RETURN 1;

    RETURN 0;
END

GO

To delete table User if it exists, call it like so:

IF [dbo].[Table_exists]('User') = 1 Drop table [User]

Simple is that:

IF OBJECT_ID(dbo.TableName, 'U') IS NOT NULL
DROP TABLE dbo.TableName

where dbo.TableName is your desired table and 'U' is type of your table.

IF EXISTS (SELECT NAME FROM SYS.OBJECTS WHERE object_id = OBJECT_ID(N'Scores') AND TYPE in (N'U'))
    DROP TABLE Scores
GO

I use:

if exists (select * 
           from sys.tables 
           where name = 'tableName' 
           and schema_id = schema_id('dbo'))
begin
    drop table dbo.tableName
end

Make sure to use cascade constraint at the end to automatically drop all objects that depend on the table (such as views and projections).

drop table if exists tableName cascade;

SQL Server 2016 and above the best and simple one is DROP TABLE IF EXISTS [TABLE NAME]

Ex:

DROP TABLE IF EXISTS dbo.Scores

if suppose the above one is not working then you can use the below one

IF OBJECT_ID('dbo.Scores', 'u') IS NOT NULL 
DROP TABLE dbo.Scores;

If you use long codes and want to write less for temporary table create this procedure:

CREATE PROCEDURE MF_DROP (@TEMP AS VARCHAR(100)) AS
    EXEC('IF OBJECT_ID(''TEMPDB.DBO.' + @TEMP + ''', ''U'') IS NOT NULL DROP TABLE ' + @TEMP)

In execution:

EXEC MF_DROP #A
CREATE TABLE #A (I INT) ....