SQL Tutorial

Sometimes rather than updating, we wish to get rid of records from the table. To do so, we can use the DELETE FROM command. The syntax for this is

DELETE FROM "table_name"
WHERE {condition}

It is easiest to use an example. Say we currently have a table as below:

Table Store_Information

store_name	Sales	Date
Los Angeles	$1500	Jan-05-1999
San Diego	$250	Jan-07-1999
Los Angeles	$300	Jan-08-1999
Boston	$700	Jan-08-1999

and we decide not to keep any information on Los Angeles in this table. We type the following SQL:

DELETE FROM Store_Information
WHERE store_name = "Los Angeles"

The resulting table would look like

Table Store_Information

store_name	Sales	Date
San Diego	$250	Jan-07-1999
Boston	$700	Jan-08-1999