pi-transact-sql.md

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title: "PI (Transact-SQL) | Microsoft Docs" ms.custom: "" ms.date: "03/03/2017" ms.prod: sql ms.prod_service: "database-engine, sql-database, sql-data-warehouse, pdw" ms.reviewer: "" ms.suite: "sql" ms.technology: t-sql ms.tgt_pltfrm: "" ms.topic: "language-reference" f1_keywords:

• "PI_TSQL"
• "PI" dev_langs:
• "TSQL" helpviewer_keywords:
• "constant value of PI"
• "PI function" ms.assetid: d7c4575b-ba1c-4ef7-a633-9a379d7f01fd caps.latest.revision: 31 author: MashaMSFT ms.author: mathoma manager: craigg monikerRange: ">=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||=sqlallproducts-allversions||>=sql-server-linux-2017"

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PI (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2008-all-md]

Returns the constant value of PI.

Transact-SQL Syntax Conventions

Syntax

PI ( )  

Return Types

float

Examples

The following example returns the value of PI.

SELECT PI();  
GO  

[!INCLUDEssResult]

------------------------  
3.14159265358979  
  
(1 row(s) affected)  

See Also

Mathematical Functions (Transact-SQL)