Sql Query To Find Relevant Match - sql

Question

I am trying to write a query that should return the following output:
val1 = 'GREAT'
val2 = 'TAGER'
See above have the same characters and it should return 'Exist' if the match is found. Otherwise, if there is a character missing, then 'Not exist'. I am using CASE to get the required output and was wondering if it could be done using SUBSTRING, CHARINDEX etc. Hoping to get a solution or idea to do so. Thanks.

Answer 1

You can make it as a function / procedure according to your needs.
DECLARE #S1 VARCHAR(100)
DECLARE #S2 VARCHAR(100)
SELECT #S1 = val1
,#S2 = val2
FROM <TABLE_NAME>
DECLARE #c CHAR(1)
DECLARE #i TINYINT
DECLARE #o1 VARCHAR(100) = ''
DECLARE #o2 VARCHAR(100) = ''
WHILE DataLength(#s1) > 0
BEGIN
SET #c = Left(#s1, 1)
SET #s1 = Substring(#s1, 2, len(#s1))
SET #i = 1
WHILE #i <= Len(#o1)
AND #c > substring(#o1, #i, 1)
SET #i += 1
SET #o1 = left(#o1, #i - 1) + #c + substring(#o1, #i, len(#o1))
END
WHILE DataLength(#s2) > 0
BEGIN
SET #c = Left(#s2, 1)
SET #s2 = Substring(#s2, 2, len(#s2))
SET #i = 1
WHILE #i <= Len(#o2)
AND #c > substring(#o2, #i, 1)
SET #i += 1
SET #o2 = left(#o2, #i - 1) + #c + substring(#o2, #i, len(#o2))
END
SELECT CASE
WHEN #o1 = #o2
THEN 'Exist'
ELSE 'Not Exist'
END

Answer 2

This is a custom script for you
Run this SP first
IF(OBJECT_ID('CharSplit')) IS NOT NULL
DROP PROCEDURE CharSplit;
GO
CREATE PROC CharSplit
#Words VARCHAR(MAX)
AS
BEGIN
IF OBJECT_ID('tempdb..#temp1') IS NOT NULL
DROP TABLE #temp1;
CREATE TABLE #temp1
(
letter CHAR(1), freq INT
);
IF OBJECT_ID('tempdb..#temp2') IS NOT NULL
DROP TABLE #temp2;
CREATE TABLE #temp2
(
letter CHAR(1), freq INT
);
DECLARE #t VARCHAR(MAX);
DECLARE #I INT;
--SET #Words = 'sanuantony';
SELECT #I = 0;
WHILE(#I < LEN(#Words) + 1)
BEGIN
SELECT #t = SUBSTRING(#words, #I, 1);
INSERT INTO #temp1
(letter, freq
)
VALUES
(#t, 0
);
SET #I = #I + 1;
END;
TRUNCATE TABLE #temp2;
INSERT INTO #temp2
(letter, freq
)
SELECT letter, COUNT(freq)
FROM #temp1
GROUP BY letter;
SELECT *
FROM #temp2
ORDER BY letter;
END;
Now Just try your business logic
DECLARE #t1 AS TABLE
(
letter CHAR(1), freq INT
);
DECLARE #t2 AS TABLE
(
letter CHAR(1), freq INT
);
INSERT INTO #t1
EXEC charSplit 'alammalay';
INSERT INTO #t2
EXEC charSplit 'malayalam';
IF(
(
SELECT COUNT(1)
FROM #t1
) =
(
SELECT COUNT(1)
FROM #t2
)
AND
(
SELECT COUNT(1)
FROM #t2
) =
(
(
SELECT COUNT(1)
FROM #t1
)
UNION
(
SELECT COUNT(1)
FROM #t2
)
)
)
SELECT 'Both are matching' AS result;
ELSE
SELECT 'Both are not matching' AS result;