Perform a Case insensitive Like query in a case sensitive SQL Server database
Solution 1
You can use UPPER
or LOWER
functions to convert the values to the same case. For example:
SELECT *
FROM YourTable
WHERE UPPER(YourColumn) = UPPER('VALUE')
Alternatively, you can specify the collation manually when comparing:
SELECT *
FROM YourTable
WHERE YourColumn = 'VALUE' COLLATE SQL_Latin1_General_CP1_CI_AI
Solution 2
In addition to using lower()
, you need to apply it to the column not the pattern. The pattern is already lower case.
Select top 300 a.*
from (SELECT userNo, userName, Place, Birthdate
FROM usertable
where personid = 2 and lower(Name) LIKE '%john%'
UNION
SELECT userNo, userName, Place, Birthdate
FROM usertable2
where personid = 2 and
(lower(Name) like '%john%' or lower(Place) like '%ny%')
) a
order by userNo;
Note that UNION ALL
is preferable to UNION
, unless you intentionally want to incur the overhead of removing duplicates.
Rajakrishnan
Updated on July 24, 2022Comments
-
Rajakrishnan almost 2 years
This is my scenario.
SQL Server 2014 Standard edition, I have a database with a collation
SQL_Latin1_General_CP437_BIN2
which is case sensitive.I want to perform a
LIKE
query which should return the output irrespective of case sensitive.Ex: if i execute a
Like
query to fetch the records with userName 'John' it should also return rows irrespective of case sensitive 'JOHN', 'John', 'john','joHN'.I tried using
Lcase
,Ucase
, but I am getting the errorMsg 195, Level 15, State 10, Line 4
'LCASE' is not a recognized built-in function name.This is my sample query
SELECT TOP 300 * FROM (SELECT userNo, userName, Place, Birthdate FROM usertable WHERE personid = 2 AND (Name LIKE LCASE('%john%')) UNION SELECT userNo, userName, Place, Birthdate, FROM usertable2 WHERE personid = 2 AND (Name LIKE LCASE( '%john%') OR Place LIKE LCASE('%NY%')) ) a ORDER BY userNo
Guys help me out with your valuable suggestions , I am bit confused of using collation based DB.