Find patterns in a field

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Find patterns in a field

Ruth

Valued Member

Points: 50
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May 18, 2011 at 5:34 pm

#389552

Is there a way to find all of the patterns that exist for data entered in a field?
I have an PO_NUM column that is supposed to have data in the following pattern: dd-dddd
However, people were allowed to enter anything in the field, so there is a lot of data in the field that does not conform to that pattern.
I need a way to identify all of the different patterns that exist in the data. Can anyone help?
Thanks!
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mister.magoo SSC-Forever Points: 47068 More actions · Answer 1

That is quite a difficult one to answer because we don't know what you consider to be a pattern.

It looks like you are using "d" to indicate a numeric digit, so perhaps you want to know what patterns of digits there are?

If so, you could do something like this:

;with data(col) as

(

SELECT '12-222' union all

SELECT '12222' union all

SELECT '12-2222' union all

SELECT '1-222' union all

SELECT '32-444' union all

SELECT '52162' union all

SELECT '12-2222' union all

SELECT '123-222'

)

select pattern,COUNT(*) as occurrences

from data

cross apply (

select pattern =

replace(

replace(col ,'0','d')

,'1','d')

,'2','d')

,'3','d')

,'4','d')

,'5','d')

,'6','d')

,'7','d')

,'8','d')

,'9','d')

) AS anything

group by pattern

Results:

patternoccurrences

d-ddd1

ddddd2

dd-ddd2

dd-dddd2

ddd-ddd1

MM

select geometry::STGeomFromWKB(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