What is the DELETE statement in SQL Server?

What is the DELETE statement in SQL Server?

SQL Server Functions. The SQL DELETE Statement. The DELETE statement is used to delete existing records in a table. DELETE Syntax. DELETE FROM table_name WHERE condition; Note: Be careful when deleting records in a table! Notice the WHERE clause in the DELETE statement. The WHERE clause specifies which record(s) should be deleted.

How to delete a table in SQL Server?

DELETE Syntax. DELETE FROM table_name WHERE condition; Note: Be careful when deleting records in a table! Notice the WHERE clause in the DELETE statement. The WHERE clause specifies which record (s) should be deleted. If you omit the WHERE clause, all records in the table will be deleted!

How to use on delete cascade in SQL?

For the cascade to work, you need to ad that to the FK definition on the Sport_Games table. That way when the Games record is deleted, the sport_Games record will be deleted as well. Your ON DELETE CASCADE will work for you if you put it on the correct Foreign Key. But to answer your question…

How do I delete a foreign key in SQL Server?

WHen you create a foreign key, there are some additional options you have to set to tell it to do the cascade delete. If you are creating the foreign key through T-SQL you must append the ON DELETE CASCADE option to the foreign key: If using SSMS, modify the table and go to where you created the relationship.

How to iterate through a result set in SQL?

There are three methods you can use to iterate through a result set by using Transact-SQL statements. One method is the use of temp tables. With this method, you create a snapshot of the initial SELECT statement and use it as a basis for cursoring. For example: A second method is to use the min function to walk a table one row at a time.

Which is faster TRUNCATE TABLE or DELETE statement?

The TRUNCATE TABLE is faster than DELETE Statement You try to delete the data from the table that has a foreign key, and the referential action is ON DELETE CASCADE, then the DELETE statement removes data from the parent and child table.