SQL DELETE
The SQL DELETE statement is used to delete rows from a table. Generally DELETE statement removes one or more records from a table.
SQL DELETE Syntax
Let's see the Syntax for the SQL DELETE statement:
Here table_name is the table which has to be deleted. The WHERE clause in SQL DELETE statement is optional here.
SQL DELETE Example
Let us take a table, named "EMPLOYEE" table.
| ID | EMP_NAME | CITY | SALARY |
|---|---|---|---|
| 101 | Adarsh Singh | Obra | 20000 |
| 102 | Sanjay Singh | Meerut | 21000 |
| 103 | Priyanka Sharma | Raipur | 25000 |
| 104 | Esha Singhal | Delhi | 26000 |
Example of delete with WHERE clause is given below:
Resulting table after the query:
| ID | EMP_NAME | CITY | SALARY |
|---|---|---|---|
| 102 | Sanjay Singh | Meerut | 21000 |
| 103 | Priyanka Sharma | Raipur | 25000 |
| 104 | Esha Singhal | Delhi | 26000 |
Another example of delete statement is given below
Resulting table after the query:
| ID | EMP_NAME | CITY | SALARY |
|---|
It will delete all the records of EMPLOYEE table.
It will delete the all the records of EMPLOYEE table where ID is 101.
The WHERE clause in the SQL DELETE statement is optional and it identifies the rows in the column that gets deleted.
WHERE clause is used to prevent the deletion of all the rows in the table, If you don't use the WHERE clause you might loss all the rows.
Invalid DELETE Statement for ORACLE database
You cannot use * (asterisk) symbol to delete all the records.
Topics of SQL DELETE Statement
SQL DELETE TABLE
How to delete the table and what is the difference between DELETE and TRUNCATE statement?
SQL DELETE ROW
How to delete a row from the database?
SQL DELETE All Rows
How to delete all the rows of a table?
SQL DELETE Duplicate Rows
How to use distinct keyword to delete all the duplicate rows from the table?
SQL DELETE DATABASE
There is not used DELETE statement to delete the database. But, there is used DROP statement to delete the database.
SQL DELETE VIEW
How to delete the view from the database?
SQL DELETE JOIN
How to use delete statement with INNER JOIN?
