String concatenation operator ||

SQLServerCentral Article

T-SQL in SQL Server 2025: Concatenating Strings

  • Article

Like many of you, I have often put strings together (concatenation) with a simple arithmetical operator: +.  We have a few other ways to put strings together, but in SQL Server 2025, we have a new operator that allows us to put strings together. This is the double pipe (||) operator. This article looks at […]

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2025-11-14

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Question of the Day

The Decoded Value

In SQL Server 2025, what is returned from this code:

DECLARE @message VARCHAR(50) = 'Hello SQL Server 2025!';
DECLARE @encoded VARCHAR(MAX);

SET @encoded = BASE64_ENCODE(CAST(@message AS VARBINARY(1000)));
SELECT BASE64_DECODE(@encoded) 

See possible answers