I cannot get this query to work - can you see what I am doing wrong
SELECT
SV00300.Service_Call_ID
,SV00300.Service_Description
,SV00300.DATE1
,SV00300.LOCATNNM
,SV00300.CUSTNAME
,SV00300.CUSTNMBR
,SV00300.ADRSCODE
,SV00300.Type_Call_Short
,SV00300.Contract_Number
,DAM_TechEE_Info.FRSTNAME
,DAM_TechEE_Info.Technician
FROM
SV00300
FULL OUTER JOIN WS30702
ON SV00300.Service_Call_ID = WS30702.WS_Job_Number
INNER JOIN DAM_TechEE_Info
ON WS30702.EMPLOYID = DAM_TechEE_Info.EMPLOYID
WHERE SV00300.DATE1 Between (@Start_Date) and (@End_Date)
and
(
SV00300.CUSTNMBR in (@CUSTNMBR)
or SV00300.LOCATNNM in (@LOCATNNM)
or SV00300.Contract_Number in (@Contract_Number)
)