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 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';
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
- SQL Exercises, Practice, Solution
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- Movie Database
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- SUBQUERIES on movie Database [16 Exercises]
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- Soccer Database
- Introduction
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- SUBQUERIES on soccer Database [33 Exercises]
- Hospital Database
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- More to come!
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Previous: Update with condition
Next: Update columns using sum function and group by
SQL: Tips of the Day
SQL Server SELECT into existing table.
INSERT INTO dbo.TABLETWO SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:
INSERT INTO dbo.TABLETWO (col1, col2) SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
Database: SQL Server
Ref: https://bit.ly/3y6tpA3
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