Fuzzy logic between two columns

Question

Fuzzy logic between two columns

getsaby

Old Hand

Points: 339
More actions
February 20, 2025 at 5:12 pm

#4542222
Hello,
I have tried various methods to accomplish this using functions like PATINDEX, DIFFERENCE, and the Levenshtein Distance function, but I haven't been successful.
I have two columns of type VARCHAR, and I need to determine if a specific word exists in both columns. For example, in the rows below, the string "603260" matches. The input do not follow any specific pattern.
"START SOFT SERIES B A/B 150-F201NBD 603260"
"JHFLETCH=51462,U/C 603260"
```
with sm as
(
select 'CYLINDER SHEAR INVERTED JOY 100180008' Ellips, 'JOY=100180008,ICG=4030' CONL
UNION
select 'JOY=100180008,ICG=40303', 'ADAPT BULKHEAD TNC F/F ST FLT 33090' 
UNION
select 'SHAFT SLEEVE SHORT TONS PER HIOUR 014S 0F1AC11 T006', 'STAMLER=98-A5S1608000,JOY=98-A5S1608000'
UNION
select 'START SOFT SERIES B A/B 150-F201NBD 603260 ','JHFLETCH=51462,U/C 603260'
)

SELECT * FROM SM
```
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Phil Parkin SSC Guru Points: 247107 More actions · Answer 1

getsaby wrote:

Hello,
I have tried various methods to accomplish this using functions like PATINDEX, DIFFERENCE, and the Levenshtein Distance function, but I haven't been successful.
I have two columns of type VARCHAR, and I need to determine if a specific word exists in both columns. For example, in the rows below, the string "603260" matches. The input do not follow any specific pattern.
"START SOFT SERIES B A/B 150-F201NBD 603260"
"JHFLETCH=51462,U/C 603260"
with sm as
(
select 'CYLINDER SHEAR INVERTED JOY 100180008' Ellips, 'JOY=100180008,ICG=4030' CONL
UNION
select 'JOY=100180008,ICG=40303', 'ADAPT BULKHEAD TNC F/F ST FLT 33090' 
UNION
select 'SHAFT SLEEVE SHORT TONS PER HIOUR 014S 0F1AC11 T006', 'STAMLER=98-A5S1608000,JOY=98-A5S1608000'
UNION
select 'START SOFT SERIES B A/B 150-F201NBD 603260 ','JHFLETCH=51462,U/C 603260'
)

SELECT * FROM SM

You say a 'specific' word, but in your image there are two different matches highlighted. Rather than 'specific', did you mean 'any'?

Phil Parkin SSC Guru Points: 247107 More actions · Answer 2

Have a look at this. I used a temp table & added a PK for fun.

DROP TABLE IF EXISTS #temptable

CREATE TABLE #temptable
(
    SomePK INT IDENTITY(1, 1) NOT NULL PRIMARY KEY
   ,Ellips VARCHAR(51)
   ,CONL VARCHAR(39)
);

INSERT #temptable
(
    Ellips
   ,CONL
)
VALUES
('CYLINDER SHEAR INVERTED JOY 100180008', 'JOY=100180008,ICG=4030')
,('JOY=100180008,ICG=40303', 'ADAPT BULKHEAD TNC F/F ST FLT 33090')
,('SHAFT SLEEVE SHORT TONS PER HIOUR 014S 0F1AC11 T006', 'STAMLER=98-A5S1608000,JOY=98-A5S1608000')
,('START SOFT SERIES B A/B 150-F201NBD 603260 ', 'JHFLETCH=51462,U/C 603260');

SELECT t.SomePK
      ,t.Ellips
      ,t.CONL FROM #temptable t
CROSS APPLY STRING_SPLIT(t.Ellips,' ') ss1
CROSS APPLY STRING_SPLIT(t.CONL, ' ') ss2
WHERE ss1.value = ss2.value

This reply was modified 1 month ago by Phil Parkin.

getsaby Old Hand Points: 339 More actions · Answer 3

Thanks Phil,

Sorry , I think you are correct it should be "any" word, so for the above 4 rows, there is another row, where "100180008" exists between them.

('CYLINDER SHEAR INVERTED JOY 100180008', 'JOY=100180008,ICG=4030')

Jonathan AC Roberts SSCoach Points: 18399 More actions · Answer 4

SELECT DISTINCT t.SomePK, t.Ellips, t.CONL, ss1.value AS MatchingWord
  FROM #temptable t
 CROSS APPLY STRING_SPLIT(TRANSLATE(t.Ellips, '=,/()', '     '), ' ') ss1
 CROSS APPLY STRING_SPLIT(TRANSLATE(t.CONL, '=,/()', '     '), ' ') ss2
 WHERE ss1.value = ss2.value
   AND ss1.value <> ''; -- Exclude empty values

Phil Parkin SSC Guru Points: 247107 More actions · Answer 5

Phil Parkin

SSC Guru

Points: 247107

February 20, 2025 at 6:01 pm

#4542258

Nice refinement, Jonathan.

getsaby Old Hand Points: 339 More actions · Answer 6

Thank you, @Phil Parkin and @jonathan-2 AC Roberts! This is exactly what I needed. It works perfectly.

Fuzzy logic between two columns

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