Επεξεργασία

Κοινή χρήση μέσω

SQUARE (Transact-SQL)

  • Άρθρο

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric

Returns the square of the specified float value.

Transact-SQL syntax conventions

Syntax

SQUARE ( float_expression )

Arguments

float_expression
Is an expression of type float or of a type that can be implicitly converted to float.

Return Types

float

Examples

The following example returns the volume of a cylinder having a radius of 1 inch and a height of 5 inches.

DECLARE @h FLOAT, @r FLOAT;  
SET @h = 5;  
SET @r = 1;  
SELECT PI()* SQUARE(@r)* @h AS 'Cyl Vol';

Here's the result set.

Cyl Vol  
--------------------------  
15.707963267948966

Examples: Azure Synapse Analytics and Analytics Platform System (PDW)

The following example returns the square of each value in the volume column in the containers table.

-- Uses AdventureWorks  
  
CREATE TABLE Containers (  
    ID INT NOT NULL,  
    Name VARCHAR(20),  
    Volume FLOAT(24));  
  
INSERT INTO Containers VALUES (1, 'Cylinder', '125.22');  
INSERT INTO Containers VALUES (2, 'Cube', '23.98');  
  
SELECT Name, SQUARE(Volume) AS VolSquared   
FROM Containers;

Here's the result set.

Name           VolSquared
-------------  ----------
Cylinder       15680.05
Cube             575.04

See Also

Mathematical Functions (Transact-SQL)