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Join Two tables using the group by function

P: 22
Hi All,

I tried lots ways to solve my problem.But i am not getting my required output.

I am explaining my requirement in detail below.

I have two tables in my database.From those two tables i want to get the entire data(all rows) of first table with join condition.
Along with that i am using where condition to get the maximum value records of the second table.
This is the query i am using:
Expand|Select|Wrap|Line Numbers
  1.    select,pd.fname,,pf.facilityid
  2.    from patient_data pd
  3.    left join tbl_patientfacility pf 
  4.    on = pf.patientid
  5.    where in (select max(id) from tbl_patientfacility group by patientid) 
By applying this i am getting the data which id's are coming through the where condition,those records only displaying.But i need the records which are left in the first table.

I am attaching the images.
Could any one give me the suggestion on how to get my output.
Attached Images
File Type: jpg InPut.jpg (41.6 KB, 66 views)
File Type: png ExpectedOutput.png (3.5 KB, 55 views)
Mar 10 '15 #1
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1 Reply

Expert Mod 10K+
P: 12,366
Join the facility table to your subquery to return just the max rows before outer joining to your patient table.
Mar 10 '15 #2

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