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title EOMONTH (Transact-SQL) | Microsoft Docs
ms.custom
ms.date 03/04/2017
ms.prod sql
ms.prod_service database-engine, sql-database, sql-data-warehouse, pdw
ms.reviewer
ms.technology t-sql
ms.topic language-reference
f1_keywords
EOMONTH
EOMONTH_TSQL
dev_langs
TSQL
helpviewer_keywords
EOMONTH function
ms.assetid 1d060d8e-3297-4244-afef-57df2f8f92e2
author MikeRayMSFT
ms.author mikeray
monikerRange >=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||=sqlallproducts-allversions||>=sql-server-linux-2017||=azuresqldb-mi-current

EOMONTH (Transact-SQL)

[!INCLUDEtsql-appliesto-ss2012-all-md]

This function returns the last day of the month containing a specified date, with an optional offset.

Topic link icon Transact-SQL Syntax Conventions

Syntax

EOMONTH ( start_date [, month_to_add ] )

Arguments

start_date
A date expression that specifies the date for which to return the last day of the month.

month_to_add
An optional integer expression that specifies the number of months to add to start_date.

If the month_to_add argument has a value, then EOMONTH adds the specified number of months to start_date, and then returns the last day of the month for the resulting date. If this addition overflows the valid range of dates, then EOMONTH will raise an error.

Return Type

date

Remarks

The EOMONTH function can remote to [!INCLUDEssSQL11] servers and higher. It cannot be remote to servers with a version lower than [!INCLUDEssSQL11].

Examples

A. EOMONTH with explicit datetime type

DECLARE @date DATETIME = '12/1/2011';  
SELECT EOMONTH ( @date ) AS Result;  
GO

[!INCLUDEssResult]

Result  
------------  
2011-12-31  
  
(1 row(s) affected)

B. EOMONTH with string parameter and implicit conversion

DECLARE @date VARCHAR(255) = '12/1/2011';  
SELECT EOMONTH ( @date ) AS Result;  
GO

[!INCLUDEssResult]

Result  
------------  
2011-12-31  
  
(1 row(s) affected)

C. EOMONTH with and without the month_to_add parameter

Note: the values shown in these result sets reflect an execution date between and including

    12/01/2011
    
    and
    
    12/31/2011

DECLARE @date DATETIME = GETDATE();  
SELECT EOMONTH ( @date ) AS 'This Month';  
SELECT EOMONTH ( @date, 1 ) AS 'Next Month';  
SELECT EOMONTH ( @date, -1 ) AS 'Last Month';  
GO

[!INCLUDEssResult]

This Month  
-----------------------  
2011-12-31  
  
(1 row(s) affected)  
  
Next Month  
-----------------------  
2012-01-31  
  
(1 row(s) affected)  
  
Last Month  
-----------------------  
2011-11-30  
  
(1 row(s) affected)