How to Delete Records from a Database Using SQL DELETE Statement
What is the SQL DELETE Statement?
The SQL DELETE statement is used to permanently delete one or more records from a database table. It is a powerful command that should be used with caution, as it cannot be undone.
Syntax of the SQL DELETE Statement
The syntax of the SQL DELETE statement is as follows:
DELETE FROM table_name WHERE condition;
Where:
- table_name is the name of the table from which you want to delete records.
- condition is an optional clause that specifies the records that you want to delete. If you do not specify a condition, all records in the table will be deleted.
Example of Using the SQL DELETE Statement
The following example shows how to delete all records from the "customers" table:
DELETE FROM customers;
The following example shows how to delete all records from the "customers" table where the "customer_id" is greater than 10:
DELETE FROM customers WHERE customer_id > 10;
Caution
It is important to use the SQL DELETE statement with caution. Once records are deleted, they cannot be recovered. It is a good practice to back up your database before executing a DELETE statement.
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