SQL Delete is a command used to delete records from a database table. The syntax for the DELETE statement in SQL is as follows:
DELETE FROM table_name WHERE condition;
Here’s a breakdown of the components:
DELETE FROM: This phrase specifies that you want to delete records from a table.
table_name: This is the name of the table from which you want to delete records.
WHERE: This keyword is optional but commonly used to specify a condition that determines which records should be deleted. If you omit the
WHEREclause, all records in the table will be deleted.
condition: This is the condition that determines which records should be deleted. It typically consists of one or more logical expressions involving columns in the table.
Here’s an example of how you might use the DELETE statement:
DELETE FROM customers WHERE customer_id = 1001;
This query deletes the record(s) from the “customers” table where the “customer_id” is equal to 1001.
It’s important to use the DELETE statement with caution as it permanently removes data from the table. Always make sure to double-check your conditions before executing a DELETE statement to avoid unintentional data loss.