SQL LOWER() function

LOWER() function

The SQL LOWER() function is used to convert all characters of a string to lower case.

Syntax:

LOWER(string)

PostgreSQL, MySQL, SQL Server and Oracle

All of above platforms support the SQL syntax of LOWER().

Parameters:

Pictorial Presentation:

Application of LOWER()

In the subsequent pages, we have discussed how to apply LOWER() with various SQL clauses. we have used Oracle 10g Express Edition.

Example:

If we want to get the string 'TESTING FOR LOWER FUNCTION' in lower case from the DUAL table, the following SQL statement can be used :

SELECT LOWER('TESTING FOR LOWER FUNCTION') 
AS Testing_Lower 
FROM dual;

In the above example, 'Testing_Lower' is a column alias which will come as a column heading to the output.

Output:

TESTING_LOWER
--------------------------
testing for lower function

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