What is the complete list of all special characters for a SQL (I'm interested in SQL Server but other's would be good too) LIKE clause?
E.g.
SELECT Name FROM Person WHERE Name LIKE '%Jon%'
%
- Any string of zero or more characters._
- Any single character%
- Any string of zero or more characters._
- Any single characterSybase
%
- Any string of zero or more characters._
- Any single character
Reference Guide here [PDF]
%
- Any string of zero or more characters._
- Any single characterPostgreSQL also has the SIMILAR TO
operator which adds the following:
[specifier]
[^specifier]
|
- either of two alternatives*
- repetition of the previous item zero or more times.+
- repetition of the previous item one or more times.()
- group items togetherThe idea is to make this a community Wiki that can become a "One stop shop" for this.
For SQL Server, from http://msdn.microsoft.com/en-us/library/ms179859.aspx :
% Any string of zero or more characters.
WHERE title LIKE '%computer%'
finds all book titles with the word 'computer' anywhere in the book title.
_ Any single character.
WHERE au_fname LIKE '_ean'
finds all four-letter first names that end with ean (Dean, Sean, and so on).
[ ] Any single character within the specified range ([a-f]) or set ([abcdef]).
WHERE au_lname LIKE '[C-P]arsen'
finds author last names ending with arsen and starting with any single character between C and P, for example Carsen, Larsen, Karsen, and so on. In range searches, the characters included in the range may vary depending on the sorting rules of the collation.
[^] Any single character not within the specified range ([^a-f]) or set ([^abcdef]).
WHERE au_lname LIKE 'de[^l]%'
all author last names starting with de and where the following letter is not l.