sql - MySQL Query for calculating weightage -


to calculate weightage of faults i've formulated query,

select id,faultdistribution, faulttype, faultseverity, if (faultdistribution='crs', count(id) * 8, 0) +  if (faultdistribution='configuration', count(id) * 6, 0) +  if (faulttype='bs' , faultseverity='ft', count(id) * 4, 0) +  if (faulttype='bs' , faultseverity='mj', count(id) * 2, 0) +  if (faulttype='bs' , faultseverity='md', count(id) * 5, 0) +  if (faulttype='bs' , faultseverity='mi', count(id) * 3, 0) +  if (faulttype='lf' , faultseverity='ft', count(id) * 2, 0) +  if (faulttype='lf' , faultseverity='mj', count(id) * 1, 0)  tbl_fault product='das' , faultdistribution='missed'

what intend is;

if fault distribution= 'crs' fault * 8 + if fault distribution= 'configuration' fault * 6 .........

as, there records in database not having result above query, help/suggestions required.

regards

becuase using aggregate function count in query returns 1 row.but query running rows 1 one wrong.

the count() function returns number of rows matches specified criteria.


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