基于mysql中的另一个表单元格值排除的行

Question

I have two tables.

student master Feemaster I executed the query

SELECT f.standard,fee_type,fee_name,amount,ac_year FROM fee_master f, student_master s
where
s.standard=f.standard and
s.admission_no='21300';

I got resultset like

But my need is if studnet_master.ac_year== AC16 then INITIAL FEE should get removed from resultset or if studnet_master.ac_year== !=AC16 then ADMISSION FEE should get removed from resultset

Can anyone please help me to sort out this....

Thanks in advance...

Answer 1

Just add two extra conditions to your WHERE clause:

SELECT f.standard, f.fee_type, f.fee_name, f.amount, s.ac_year
FROM fee_master f
INNER JOIN
student_master s
    ON s.standard = f.standard
WHERE s.admission_no = '21300' AND
    (s.ac_year != 'AC16' OR f.fee_name != 'INITIAL FEES') AND
    (s.ac_year = 'AC16' OR f.fee_name != 'ADMISSION FEES')

Answer 2

You can put condition in and statement.
Query:-
SELECT f.standard,fee_type,fee_name,amount,ac_year FROM fee_master f, student_master s
where
s.standard=f.standard and
s.admission_no='21300' and
IF(s.ac_year = 'AC16',FEE_NAME != 'INITIAL FEES',FEE_NAME != 'ADMISSION FEES')