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SQL Server FAQ - Deleting an Existing Row with DELETE Statements

By: FYIcenter.com

(Continued from previous topic...)

How To Delete an Existing Row with DELETE Statements?

If you want to delete an existing row from a table, you can use the DELETE statement with a WHERE clause to identify that row. Here is good sample of DELETE statements:

-- insert a row for this test
INSERT INTO fyi_links (url, id) 
   VALUES ('www.myspace.com', 301)
GO
(1 row(s) affected)

-- view the inserted row
SELECT id, url, notes, counts FROM fyi_links 
   WHERE id = 301
GO
id    url               notes   counts
301   www.myspace.com   NULL    NULL

-- delete one row
DELETE FROM fyi_links WHERE id = 301
GO
(1 row(s) affected)

-- try to view the deleted row
SELECT id, url, notes, counts FROM fyi_links 
   WHERE id = 301
no rows

Row with id of 301 is truly deleted.

(Continued on next topic...)

1. What Are DML (Data Manipulation Language) Statements?
2. How To Create a Testing Table with Test Data?
3. How To Insert a New Row into a Table with "INSERT INTO" Statements?
4. How To Use Column Default Values in INSERT Statements?
5. How to provide column names in INSERT Statements?
6. What Happens If You Insert a Duplicate Key for the Primary Key Column?
7. How To Insert Multiple Rows with One INSERT Statement?
8. How To Update Values in a Table with UPDATE Statements?
9. How To Update Multiple Rows with One UPDATE Statement?
10. How to use old values to define new values in UPDATE statements?
11. Is the Order of Columns in the SET Clause Important?
12. How To Use Values from Other Tables in UPDATE Statements?
13. What Happens If the UPDATE Subquery Returns No Rows?
14. What Happens If the UPDATE Subquery Returns Multiple Rows?
15. How To Delete an Existing Row with DELETE Statements?
16. How To Delete Multiple Rows with One DELETE Statement?
17. How To Delete All Rows with DELETE Statements?
18. How To Delete All Rows with TRUNCATE TABLE Statement?