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samir.first
Starting Member

Egypt
34 Posts

Posted - 02/25/2014 :  03:37:20  Show Profile  Reply with Quote
I need Query
A
B
C
.
.
Z
AA
AB
.
.
AZ
AAA
AAB
. etc

nagino
Yak Posting Veteran

Japan
75 Posts

Posted - 02/25/2014 :  06:55:34  Show Profile  Reply with Quote
You select Chars
WITH BASE (letters, ascii) AS (
  SELECT CHAR(65), 65
  UNION ALL
  SELECT CHAR([ascii]+1), [ascii]+1
  FROM BASE
  WHERE [ascii] < 90
), RESULT (letters) AS (
  SELECT CONVERT(varchar(10), letters)
  FROM BASE
  UNION ALL
  SELECT CONVERT(varchar(10), RESULT.letters + BASE.letters)
  FROM RESULT
  CROSS JOIN BASE
  WHERE LEN(RESULT.letters) < 3
)
SELECT letters
FROM RESULT
ORDER BY LEN(letters), letters


-------------------------------------
From Japan
Sorry, my English ability is limited.
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samir.first
Starting Member

Egypt
34 Posts

Posted - 02/26/2014 :  09:05:57  Show Profile  Reply with Quote
Incorrect syntax near 'RESULT'.
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Lamprey
Flowing Fount of Yak Knowledge

4614 Posts

Posted - 02/26/2014 :  16:26:40  Show Profile  Reply with Quote
It looks like SQL is interpreting RESULT as a reserved word. Either make it a quoted-identifier (put square brackets) around it or rename it.
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