How to Correctly Retrieve Dates Greater Than a Specific Value in SQL Server?

Retrieving Dates Greater Than a Specific Value in SQL Server

In an attempt to retrieve dates exceeding a particular timestamp, you employed the following query:

SELECT * 
FROM dbo.March2010 A
WHERE A.Date >= 2010-04-01;

However, you encountered issues with this query. To understand why, let's examine the following factors:

• Data Type: The provided value, "2010-04-01," is interpreted as a mathematical expression. In SQL Server, it signifies the integer "2005," as it subtracts the parts of the date (4 and 1) from 2010.
• DateTime Conversion: To correctly compare dates, you must convert the expression to a suitable format. This can be achieved by using the Convert function to transform it into a datetime data type.

Therefore, the following query should resolve the issue:

SELECT *  
FROM dbo.March2010 A 
WHERE A.Date >= Convert(datetime, '2010-04-01' )

This query explicitly converts "2010-04-01" to a datetime value, ensuring a proper comparison with the column "A.Date."

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