w3resource

SQL update columns with arithmetical expression

In this page, we are going to discuss how to change the data of the columns with the SQL UPDATE statement using an arithmetical expression.

Example:

Sample table: neworder


To change the value of 'advance_amount' column with a new value as specified -

1. 'ord_amount'*10,

the following SQL statement can be used:

SQL Code:

UPDATE neworder
SET advance_amount=ord_amount*.10;

Output:

Sql select re-ordering columns

SQL update columns with arithmetical expression and where

In the following, we are going to discuss how to change the data of the columns with the SQL UPDATE statement using arithmetical expression and SQL WHERE clause.

Example:

Sample table: neworder


To update the value of 'advance_amount' with following conditions -

1. new value for 'advance_amount is 'ord_amount'*10,

2. 'ord_date' must be greater than '01-Aug-08',

the following SQL statement can be used:

SQL Code:

UPDATE neworder
SET advance_amount=ord_amount*.10
WHERE ord_date>'01-Aug-08';

SQL update columns with arithmetical expression and boolean 'AND'

In the following, we are going to discuss how to change the data of the columns with the SQL UPDATE statement using arithmetical expression and SQL WHERE clause and boolean operator AND.

Example:

Sample table: customer1


To change the value of 'outstanding_amt' of 'customer1' table with following conditions -

1. modified value for 'outstanding_amt' is 'outstanding_amt'-('outstanding_amt'*.10),

2. 'cust_country' must be 'India',

3. and 'grade' must be 1,

the following SQL statement can be used :

SQL Code:

UPDATE customer1
SET outstanding_amt=outstanding_amt-(outstanding_amt*.10)
WHERE cust_country='India' AND grade=1;

SQL update columns with arithmetical expression and comparison operator

In the following, we are discussing, how to change the data of the columns with the SQL UPDATE statement using arithmetical expression and COMPARISON operator.

Example:

Sample table: neworder


To change the value of 'advance_amount' of 'neworder' table with the following condition -

1. modified value for 'advance_amount' is 'ord_amount'*.10,

2. 'ord_date' must be greater than '01-Aug-08',

3. and 'ord_date' must be less than '01-Dec-08',

the following SQL statement can be used:

SQL Code:

UPDATE neworder
SET advance_amount=ord_amount*.10
WHERE ord_date>'01-Aug-08' AND ord_date<'01-Dec-08';

See our Model Database

Here is a new document which is a collection of questions with short and simple answers, useful for learning SQL as well as for interviews.

Practice SQL Exercises

Want to improve the above article? Contribute your Notes/Comments/Examples through Disqus.

Previous: Update with condition
Next: Update columns using sum function and group by



SQL: Tips of the Day

SQL MAX of multiple columns?

SELECT
    CASE
        WHEN Date1 >= Date2 AND Date1 >= Date3 THEN Date1
        WHEN Date2 >= Date1 AND Date2 >= Date3 THEN Date2
        WHEN Date3 >= Date1 AND Date3 >= Date2 THEN Date3
        ELSE                                        Date1
    END AS MostRecentDate

Ref: https://bit.ly/3N5pffU