Exclude all but date characters in SQL 2008

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Exclude all but date characters in SQL 2008

helal.mobasher 13209

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October 15, 2012 at 2:43 pm

#268553

I have a data clumn (A) stored as Text and contains all sorts of codes and also includes date stored MM/DD/YYYY. I need to select only date characters and exclude all others. Then I need to put this date in my where clause
where A=Getdate() - one week
Thank you,
Helal
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Lowell SSC Guru Points: 323504 More actions · Answer 1

where ISDATE(A) = 1

AND CONVERT(datetime,A) > DATEADD(dd,-7,Getdate()) --7 days? 8 days? what's minus one week for you?

--AND CONVERT(datetime,A) > DATEADD(ww,-1,Getdate()) --1 week?

Lowell

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helal.mobasher 13209 SSCommitted Points: 1526 More actions · Answer 2

Thx Lowell, I received this error after applying the codes

"Conversion failed when converting date and/or time from character string"

after looking at the data in A, all codes are excluded excpet date characters and somer init ones such as 2088, 3011, etc...I think this init's stored as text causing the above error.

mister.magoo SSC-Forever Points: 47068 More actions · Answer 3

;with data as

(

select 'klsjadlkj ads891 3y1kjnd al k 22/31/2012 lk;adk asl;k das#' as things

union all

select 'k 11/1/2012 dk asl;k das#' as things

union all

select 'al k 10/07/2012' as things

union all

select '12/31/2012' as things

union all

select 'klsjadlkj sadas ads891 3y1kjnd al k 12/31/2012 lk;adk asl;k das#' as things

), dates as

(

select things,SUBSTRING(things,patindex('%[01][0-9]/[0-3][0-9]/[0-9][0-9][0-9][0-9]%',things),10) as found_date

from data

where things like '%[01][0-9]/[0-3][0-9]/[0-9][0-9][0-9][0-9]%'

)

select things,found_date

from dates

where found_date = CONVERT(CHAR(10),dateadd(day,-8,getdate()),101)

MM

select geometry::STGeomFromWKB(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

Lowell SSC Guru Points: 323504 More actions · Answer 4

it's a little tough with denormalized data;

ideally you'll want to change the schema if you can to store dates in date columns, and notes in a seperate column; but we cannot always do that, i know.

do you know whether, if the field contains a date, they ALL follow a standard pattern like mm/dd/yyyy?

Lowell

--help us help you! If you post a question, make sure you include a CREATE TABLE... statement and INSERT INTO... statement into that table to give the volunteers here representative data. with your description of the problem, we can provide a tested, verifiable solution to your question! asking the question the right way gets you a tested answer the fastest way possible!

helal.mobasher 13209 SSCommitted Points: 1526 More actions · Answer 5

I undrestand, but I am only the developer and don't have much control. And yes, all date are stored as MM/DD/YYYY.

Dwain Camps SSC Guru Points: 86908 More actions · Answer 6

helal.mobasher 13209 (10/15/2012)
I undrestand, but I am only the developer and don't have much control. And yes, all date are stored as MM/DD/YYYY.

Could there be more than one date per record? If yes, are you only interested in the first or do you want them all?

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helal.mobasher 13209 SSCommitted Points: 1526 More actions · Answer 7

I have yet to try what MM posted. But I foudn this solution and it's working:

ISDATE(A) = 1and len(A)=10

Anyway, thank you for sendin gme the right direction.

Helal