SQL Server - Deleting an Existing Row with DELETE Statements in SQL Server

Deleting an Existing Row with DELETE Statements in SQL Server

Q

How To Delete an Existing Row with DELETE Statements in SQL Server?

✍: FYIcenter.com

A

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.

⇒Using INSERT, UPDATE and DELETE Statements in SQL Server

⇒⇒SQL Server Database Tutorials

2016-10-30, 639👍, 0💬

Deleting All Rows with DELETE Statements in SQL Server
How To Delete All Rows with DELETE Statements in SQL Server? If you want to delete all rows from a table, you have two options: Use the DELETE statement with no WHERE clause. Use the TRUNCATE TABLE statement. Here is an example of deleting all rows with a DELETE statement: SELECT COUNT(*) FROM fyi_l... 2016-10-30, 671👍, 0💬

Deleting Multiple Rows with One DELETE Statement in SQL Server
How To Delete Multiple Rows with One DELETE Statement in SQL Server? You can delete multiple rows from a table in the same way as deleting a single row, except that the WHERE clause will match multiple rows. The tutorial exercise below deletes 3 rows from the fyi_links table: -- view rows to be dele... 2016-10-30, 641👍, 0💬

UPDATE Subquery Returning No Rows in SQL Server
What Happens If the UPDATE Subquery Returns No Rows in SQL Server? If you use a subquery to assign new values in the SET clause in an UPDATE statement, and the subquery returns no rows for an outer row, SQL Server will provide a NULL value to the SET clause. The tutorial exercise below shows you a g... 2016-11-02, 640👍, 0💬

Deleting an Existing Row with DELETE Statements in SQL Server
How To Delete an Existing Row with DELETE Statements in SQL Server? 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) V... 2016-10-30, 640👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.