sql - Count number of records with same column -


having employees table following columns

eid    ename    salary    did 100    king     5000      db 101    kochaar  7000      db 102    jack     6000      java 103    john     3000      java 104    marry    6000      db

the o/p iz in form

did    count(eid) db     3 java   2 db     3 java   2 db     3

i tried using union all, i'm not sure, how achieve tiz o/p.

select  did ,       count(*) on (partition did)    yourtable

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