Comments on: T-SQL Bitwise Operations

By: How to create a concatenated string of row values based on flags in SQL Server | PHP Developer Resource

Thu, 24 May 2012 02:04:58 +0000

[...] This article explains exactly how to accomplish this. It puts it together step by step so that you understand what is going on, too. It basically combines the bitwise operators in SQL, and then the rest is accomplished similar to what hkf posted. Hopefully, this is helpful to you [...]

By: recep hazer

recep hazer — Tue, 15 Nov 2011 08:17:44 +0000

Here’s an interesting “bug” that I’ve found:

DECLARE @bitvar BIT
SET @bitvar = 6
PRINT @bitvar & 1
PRINT @bitvar & 2
PRINT @bitvar & 4
PRINT 6 & 1
PRINT 6 & 2
PRINT 6 & 4

@bitvar is bit how the hell it supposed to get value 6
try @bitvar as int there is no bug

By: Quotes

Quotes — Sat, 30 Apr 2011 03:31:20 +0000

Thanks for sharing this post.It is really worth reading.

By: Nabarupam Deb

Nabarupam Deb — Tue, 08 Mar 2011 12:57:30 +0000

What to do if the data is bigger than the BIGINT Range?

By: Paulo Pedro

Paulo Pedro — Sun, 01 Aug 2010 16:25:12 +0000

DECLARE @bitvar BIT
SET @bitvar = 6
PRINT @bitvar & 1
PRINT @bitvar & 2
PRINT @bitvar & 4
PRINT CAST(6 AS BIT) & 1
PRINT CAST(6 AS BIT) & 2
PRINT CAST(6 AS BIT) & 4

This is one of many situations where we should cast values first.

By: compact treadmill

compact treadmill — Thu, 04 Mar 2010 07:20:07 +0000

Helpful article and examples, Thanks.

By: Dave

Dave — Tue, 16 Feb 2010 14:31:44 +0000

You can also do the same trick without creating a lookup table variable, like this:

[code]
declare @tmp table
(
val int,
color nvarchar(100)
)

insert into @tmp (val, color) VALUES (0, 'black')
insert into @tmp (val, color) VALUES (1, 'red')
insert into @tmp (val, color) VALUES (2, 'yellow')
insert into @tmp (val, color) VALUES (4, 'blue')
insert into @tmp (val, color) VALUES (8, 'white')

declare @newval int
set @newval = 6

select
*
from
@tmp t cross join
(SELECT (@newval) as val) n
where
t.val & n.val 0
[/code]

By: Darren

Darren — Fri, 12 Feb 2010 13:55:31 +0000

Here’s an interesting “bug” that I’ve found:

DECLARE @bitvar BIT
SET @bitvar = 6
PRINT @bitvar & 1
PRINT @bitvar & 2
PRINT @bitvar & 4
PRINT 6 & 1
PRINT 6 & 2
PRINT 6 & 4

By: Get the Server level default connection properties for SQL Server using T-SQL | Sankar Reddy, SQL Server Developer/DBA

Mon, 08 Feb 2010 16:27:26 +0000

[...] to use SP_CONFIGURE in SQL Server T-SQL Bitwise Operations February 8th, 2010 | Category: SQL Server, SQL Server 2005, SQL Server 2008, SQLServerPedia [...]

By: Mike

Mike — Wed, 23 Dec 2009 18:55:42 +0000

This area of programming is becoming a lost art. Storing and retreiving data by using bit masks (as this article describes) is still a common use of bitwise operators, but there are so many other uses, namely data manipulation and calculation, that are becoming forgotton.