LOWER (Transact-SQL)

LOWER (Transact-SQL)

 

THIS TOPIC APPLIES TO:yesSQL Server (starting with 2008) yesAzure SQL Database yesAzure SQL Data Warehouse yesParallel Data Warehouse

Returns a character expression after converting uppercase character data to lowercase.

Topic link icon Transact-SQL Syntax Conventions


LOWER ( character_expression )
-- Azure SQL Data Warehouse and Parallel Data Warehouse
LOWER (character_expression )

character_expression

Is an expression of character or binary data. character_expression can be a constant, variable, or column. character_expression must be of a data type that is implicitly convertible to varchar. Otherwise, use CAST to explicitly convert character_expression.

varchar or nvarchar

The following example uses the LOWER function, the UPPER function, and nests the UPPER function inside the LOWER function in selecting product names that have prices between $11 and $20. This example uses the AdventureWorks2012 database.

SELECT LOWER(SUBSTRING(Name, 1, 20)) AS Lower, 
   UPPER(SUBSTRING(Name, 1, 20)) AS Upper, 
   LOWER(UPPER(SUBSTRING(Name, 1, 20))) As LowerUpper
FROM Production.Product
WHERE ListPrice between 11.00 and 20.00;
GO

Here is the result set.

Lower Upper LowerUpper

--------------------- --------------------- --------------------

minipump MINIPUMP minipump

taillights - battery TAILLIGHTS - BATTERY taillights - battery

(2 row(s) affected)

The following example uses the LOWER function, the UPPER function, and nests the UPPER function inside the LOWER function in selecting product names that have prices between $11 and $20.

-- Uses AdventureWorks

SELECT LOWER(SUBSTRING(EnglishProductName, 1, 20)) AS Lower, 
       UPPER(SUBSTRING(EnglishProductName, 1, 20)) AS Upper, 
       LOWER(UPPER(SUBSTRING(EnglishProductName, 1, 20))) As LowerUpper
FROM dbo.DimProduct
WHERE ListPrice between 11.00 and 20.00;

Here is the result set.

Lower                 Upper                  LowerUpper

--------------------  ---------------------  --------------------

minipump              MINIPUMP               minipump

taillights – battery  TAILLIGHTS – BATTERY   taillights - battery

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