SQL DELETE statement

Source: Internet
Author: User

DELETE statement
The DELETE statement is used to DELETE rows in a table.

Syntax
Delete from table name WHERE column name = value Person:
LastName FirstName Address City
Gates Bill Xuanwumen 10 Beijing
Wilson Fred Zhongshan 23 Nanjing
Delete a row
"Fred Wilson" will be deleted:

Delete from Person WHERE LastName = 'wilson 'result:
LastName FirstName Address City
Gates Bill Xuanwumen 10 Beijing
Delete all rows
You can delete all rows without deleting a table. This means that the table structure, attributes, and indexes are complete:

Delete from table_name or:

DELETE * FROM table_name

Tutorial 2

Syntax
Delete from table_name
WHERE column_name = some_value
Person:
LastName FirstName Address City
Nilsen Fred Kirkegt 56 Stavanger
Rasmussen Nina Stien 12 Stavanger

Delete a row
"Nina Rasmussen" will be deleted:

Delete from Person WHERE LastName = 'rasmussen'
Result:
LastName FirstName Address City
Nilsen Fred Kirkegt 56 Stavanger

Delete all rows
You can delete all rows without deleting a table. This means that the table structure, attributes, and indexes are complete:

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