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SQL Tutorial

SQL Delete

SQL Delete records from a table

The SQL DELETE command is used to delete rows or records from a table.

Syntax:

DELETE FROM { table_name | ONLY (table_name) }
[{ WHERE search_condition | WHERE CURRENT OF cursor_name }]

Parameter:

Name Description
table_name Name of the table.
search_condition specify a search condition (logical expression) that has one or more conditions.

Syntax diagram - DELETE STATEMENT

Syntax diagram - DELETE STATEMENT

Table of Contents :

Sample tables associated with this page have shown bellow:

Sample table: daysorder


Sample table: customer1


To remove all rows from the table 'daysorder', the following SQL statement can be used :

DELETE FROM daysorder;

Output:

Sql select re-ordering columns

SQL deleting records with where

In this page, we are going to discuss, how the WHERE clause along with SQL DELETE command can be used to remove number of rows against some conditions.

Example:

To remove rows from the table 'customer1' with the following condition -

1. 'cust_country' must be 'Canada',

the SQL statement can be used:

SQL Code

DELETE FROM customer1
    WHERE cust_country='Canada';

Output:

Sql select re-ordering columns

SQL Delete records using comparison operators

In this page, we are going to discuss, how the COMPARISON operator along with SQL DELETE command can be used to remove specific rows from a table.

Sample tables associated with this page have shown bellow:

Sample table: customer1


Sample table: daysorder


Example

To remove rows from the table 'customer1' with the following condition -

1. 'cust_country' must be 'India',

2. 'cus_city' must not be 'Chennai',

the following SQL statement can be used :

SQL Code:

DELETE FROM customer1
WHERE cust_country='India'
AND cust_city<>'Chennai';

Output:

Sql select re-ordering columns

SQL delete records using IN operator

In this page, we are going to discuss, how the SQL IN operator along with SQL DELETE command can be used to remove specific rows from a table.

Example:

To remove rows from the table 'daysorder' with the following condition -

1. 'advance_amount' should be other than 1000 and 2000,

the following SQL statement can be used:

SQL Code:

DELETE FROM daysorder
WHERE advance_amount
NOT IN(1000,2000);

Output:

Sql select re-ordering columns

SQL delete records using BETWEEN operator

In this page, we are going to discuss, how the SQL BETWEEN operator along with SQL DELETE command can be used to remove specific rows from a table.

Example:

To remove rows from the table 'daysorder' with the following condition -

1. 'advance_amount' should be within the range of 100 and 800,

the following SQL statement can be used:

SQL Code:

DELETE FROM daysorder
WHERE advance_amount
BETWEEN 100 AND 800;

Output:

Sql select re-ordering columns

SQL delete records using LIKE operator

In this page, we are going to discuss, how the SQL LIKE operator along with SQL DELETE command can be used to remove specific rows from a table.

Example:

To remove rows from the table 'customer1' with the following condition -

1. 'cust_city' should begin with the letter 'L',

the following SQL statement can be used:

SQL Code:

DELETE FROM customer1
WHERE cust_city
LIKE 'L%';

Output:

Sql select re-ordering columns

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