How do you delete a temporary table that exists?

How do you delete a temporary table that exists?

Consider using the following pattern: BEGIN TRANSACTION; CREATE TABLE #Results; …; DROP TABLE #Results; COMMIT . If the transaction succeeds, the table will be removed. If it fails, the table will be gone as well (since it was created within the transaction). In any case: No need to check if the table already exists.

How do I delete a temp table in SQL?

Using the DROP TABLE command on a temporary table, as with any table, will delete the table and remove all data. In an SQL server, when you create a temporary table, you need to use the # in front of the name of the table when dropping it, as this indicates the temporary table.

How do you delete a table in SQL if it exists?

SQL Server DROP TABLE

1. First, specify the name of the table to be removed.
2. Second, specify the name of the database in which the table was created and the name of the schema to which the table belongs. The database name is optional.
3. Third, use IF EXISTS clause to remove the table only if it exists.

How do you check and drop a temp table in SQL?

Check If Temporary Table or Temp Table Exists in SQL Server…

1. create table TestTable(id int)
2. create table #TestTable(id int)
3. select * from tempdb.sys.tables where name like ‘#TestTable%’
4. select object_id(‘tempdb..#TestTable’,’U’)
5. if object_id(‘tempdb..#TestTable’,’U’) is not null.

How do I select a temporary table in SQL?

Syntax

1. — Create Local temporary table.
2. Create Table #myTable (id Int , Name nvarchar(20))
3. –Insert data into Temporary Tables.
4. Insert into #myTable Values (1,’Saurabh’);
5. Insert into #myTable Values (2,’Darshan’);
6. Insert into #myTable Values (3,’Smiten’);
7. — Select Data from the Temporary Tables.
8. Select * from #myTable.

What happens if temp table is not dropped?

if you do not drop the temp table, then call the dbo. MyProc again in the same session, you will get an exception thrown when the code tries to create the temp table again.

When can you drop temp table?

its always good idea to write drop statement in your sp. However temp tables gets automatically dropped when you close your Query window . Temp tables are automatically dropped as soon as they go out of scope (the proc that they were created in completes) or the connection that created them closes.

How do you delete a table that exists?

1. Permissions Required.
2. Setup.
3. Drop Table that Does Not Exist.
4. Option 1 – DROP TABLE if exists using OBJECT_ID() function (all supported versions)
5. Option 2 – DROP TABLE if exists querying the sys.
6. Option 3 – DROP TABLE if exists querying the INFORMATION_SCHEMA.
7. Option 4 – DROP TABLE IF EXISTS (SQL Server 2016 and up)