Can't pinpoint error near the LIKE keyword - sql

Question

I'm running into an error with a sql inquery near my LIKE statement. Am I formatting the LIKE clause incorrectly within the WHEN clause of a CASE? Here is the code.
SELECT
substring (Cases.FileNumber,4,6) AS [FileNumber]
,Charge.ChargeCode
,Cases.BookedLastName
,Cases.BookedFirstName
,Cases.ArrestDate
,Cases.BookedDOB
,Cases.BookedAge
,Charge.OffenseToDate
,Cases.BookedRace
,Cases.BookedSex
,Charge.OffenseStreetAddress1
,Charge.OffenseCity
,Charge.OffenseState
,Charge.OffenseZipCode
,Charge.ChargeDescription
,(SELECT CASE
WHEN charge1.ChargeDescription LIKE N'%heroin%' THEN 'Heroin'
ELSE 'Not Heroin'
END
FROM tblCsCharge AS charge1
INNER JOIN tblCsCases AS cases1
ON charge1.FileNumber = cases1.FileNumber
WHERE
charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedDOB = Cases.BookedDOB
AND cases2.ChargeCode IN (N'579.015-001Y201735')) AS HeroinYN
FROM
tblCsCases AS Cases
INNER JOIN tblCsCharge AS Charge
ON Cases.FileNumber = Charge.FileNumber
WHERE Cases.IssuedDate >= 01/01/2017
AND
Cases.IssuedDate <= #EndDate
AND
Charge.ChargeCode IN (N'579.015-001Y201735')
AND
Cases.BookedLastName NOT IN (N'Bogus')
ORDER By
Cases.BookedLastName
This is a sub-query within a bigger query focused on building a column that will simply output Heroin or Not Heroin based off of a large text field in our database.
EDITs:
Despite the changes that should make the code compile, the following error now occurs:
Invalid column name 'BookedLastName'.
Invalid column name 'BookedLastName'.
Invalid column name 'BookedDOB'.
The multi-part identifier "cases2.ChargeCode" could not be bound.

Answer 1

You have two errors in your code, both of which were pointed out, though not in the same answer.
Your case statement should be without the column name in parenthesis - I commented it out in the copy of your code below)
You're missing a closing parenthesis at the end of the query, right before the alias - I added it below.
.
,(SELECT CASE--(charge1.ChargeDescription)
WHEN charge1.ChargeDescription LIKE N'%heroin%' THEN 'Heroin'
ELSE 'Not Heroin'
END
FROM tblCsCharge AS charge1
INNER JOIN tblCsCases AS cases1
ON charge1.FileNumber = cases1.FileNumber
WHERE
charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedDOB = Cases.BookedDOB
AND cases2.ChargeCode IN (N'579.015-001Y201735')) AS HeroinYN

Answer 2

This seems to be the issue..
AND cases2.ChargeCode IN (N'579.015-001Y201735') AS HeroinYN
Since this is part of a sub-query, you need another parenthese
AND cases2.ChargeCode IN (N'579.015-001Y201735')) AS HeroinYN
ALSO
You can't put the column name after a CASE statement when you are using an equality operator.
This is acceptable
select
case columnName
when 'X' then 1
when 'Y' then 0
end
This is not
select
case columnName
when = 'X' then 1
when columnName like '%Y%' then 0
end
CORRECTED SCRIPT
,(SELECT CASE
WHEN charge1.ChargeDescription LIKE N'%heroin%' THEN 'Heroin'
ELSE 'Not Heroin'
END
FROM tblCsCharge AS charge1
INNER JOIN tblCsCases AS cases1
ON charge1.FileNumber = cases1.FileNumber
WHERE
charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedLastName = cases1.BookedLastName
AND charge1.BookedDOB = Cases.BookedDOB
AND cases2.ChargeCode IN (N'579.015-001Y201735')) AS HeroinYN

Answer 3

The proper syntax for that is:
CASE
WHEN charge1.ChargeDescription LIKE N'%heroin%' THEN 'Heroin'
ELSE 'Not Heroin'
END
Don't put the field name after CASE in this syntax.