Querying the max row length

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Querying the max row length

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Ninja's_RGR'us SSC Guru Points: 294069 More actions · Answer 1

When was that?? I never saw it work like I want it to ;)... like the old one.

Mahesh Gupta Newbie Points: 2 More actions · Answer 2

What exactly do you mean by Max Length of the row ?

MarkusB SSC-Dedicated Points: 37370 More actions · Answer 3

Hey,

finally somebody coming back to the original topic of this post.

As you can find somewhere in the beginning of this post, I was searching for the record in a table with the max length in bytes. This means adding up the actual field length of each column.

My final script would then provide the defined max length of a record and the longest actual record for all tables. Because it goes through all records in all tables in can take quite long. If you need to check just one table, it shouldn't be too difficult to change the script.

[font="Verdana"]Markus Bohse[/font]

Jeff Moden SSC Guru Points: 1004343 More actions · Answer 4

Ninja's_RGR'us (10/2/2007)
When was that?? I never saw it work like I want it to ;)... like the old one.

Actually, all that stuff worked... for about the first two days...

--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)

Jeff Moden SSC Guru Points: 1004343 More actions · Answer 5

Mahesh Gupta (10/2/2007)
What exactly do you mean by Max Length of the row ?

The maximum length of a row can be 8060 bytes. In this case, some of the folks are referring to "Max Length" as the total number of actual bytes used for each row.

--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)

SwePeso SSC-Dedicated Points: 39757 More actions · Answer 6

I think he mean TOTAL length for all 8 nvarchar columns.

SELECT TOP 1 WITH TIES PkCol, cl

FROM (

SELECT PkCol, DATALENGTH(Col1) + DATALENGTH(Col2) + DATALENGTH(Col3) + DATALENGTH(Col4) + DATALENGTH(Col5) + DATALENGTH(Col6) + DATALENGTH(Col7) + DATALENGTH(Col7) AS cl

FROM Table1

) ORDER BY cl DESC

N 56°04'39.16"
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