Decoding Set Options

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Decoding Set Options

Steve Jones - SSC Editor

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March 15, 2023 at 12:00 am

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Comments posted to this topic are about the item Decoding Set Options

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Carlo Romagnano SSC-Insane Points: 22662 More actions · Answer 1

I get it right, but I admit that the question is a little confusing: the value of 4 is the 3rd bit (starting from position ZERO, 2 is the right one). So, I understood you want to decod ANSI_WARNINGS that is GET_BIT(@@OPTION,3).

Y.B. SSChampion Points: 11649 More actions · Answer 2

Yeah, I have to admit this one was a little confusing. According to the documentation "Value 4" on the user options table is referring to CURSON_CLOSE_ON_COMMIT. If you take it as the @@OPTIONS variable returns 4 (which is decimal) then you still end up with 0100 in binary which still indicates that value 4 of the user options table is set (CURSON_CLOSE_ON_COMMIT). If you ignore that and only read it as "How do you determine if SET ANSI_WARNINGS is enabled/disabled?"; then it makes more sense. At least to me...

SELECT quote FROM brain WHERE original = 1
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Jeff Moden SSC Guru Points: 1004284 More actions · Answer 3

They do it in a lot of languages... I hate it when people number the bits differently than the exponent of "2". 😀

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Steve Jones - SSC Editor SSC Guru Points: 736063 More actions · Answer 4

The whole 0 or 1 based thing seems incredibly annoying to me. Someone should have just stated everything is 0-based early on and demanded all languages stick to this.

Jeff Moden SSC Guru Points: 1004284 More actions · Answer 5

+1000

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)

Johan Bijnens SSC Guru Points: 135355 More actions · Answer 6

Once you actually get it that you need to work with OFFSET instead of pointers, handling bitwise operations will start working.

I always have such problems when I'm in the US and people state they live on the first floor.

At home this actually is groundlevel ( offset 0 ) - we only number and count the levels above or under ground level - and our first floor is called second floor in the US.

But, as always, bitwise operations are fun once you start using operators.

Johan

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Jeff Moden SSC Guru Points: 1004284 More actions · Answer 7

Heh... I'm thinking about Left_Shift() and Right_Shift() (I always knew them as Shift-Left and Shift_right in the old days). I can see that giving new meaning to the term RBAR. I'd call it BBAB bit I've already assigned that term to "Befriended By A Bot". Saw that happen last week on LinkedIn. Really strange.

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

Helpful Links:
How to post code problems
How to Post Performance Problems
Create a Tally Function (fnTally)