Question

I have table medicine record with fields

Name  qunty    min    expiry
a       2       3     14/2/2012
b       4       1     15/12/2010
a       5       3     16/5/2012

I have to select medicine which has qunty less than min value . Two rows can exist with same name but with different expiry . So in that condition i have to add qunty of same name row and than match with min value .

Answer 1

try this one,

SELECT  Name, `min`, SUM(qunty) totalQunty
FROM    medicine
GROUP BY NAME, `min`
HAVING SUM(qunty) < `min`

SQLFiddle Demo

in that case i have also a question with you, are min values constant for the same name?