Question : mysql sww the duplicate on colum1 colum2 colum3

How can I cout the duplicate on colum1 and colum2 and colum3

I want the same address that duplicate

Hno  road  destrict     if 3 colums  is the same it mean it the same place

Answer : mysql sww the duplicate on colum1 colum2 colum3

I think the following should show what you want.
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SELECT Hno,  road, destrict 

FROM MyTable

GROUP BY Hno,  road, destrict 

HAVING COUNT(Hno) >1
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