sql - MySQL filtering out a criteria -
i thought simple guys here, little bit hard me figure out how this. have tried did not result wanted consult every 1 here.
here have 3 columns: state, store, laptop_brand wanted filter out how many store have amount of hp < 3 ( group state).
my idea on this:
select state, count(laptop_brand) sample_survey count(select store sample_survey laptop_brand = "hp") <3 group state
but not make real. sample_survey attached pic snippet data reference.
thank suggestions.
please try this:
select state, store, count(laptop_brand) total_laptop sample_survey laptop_brand = "hp" group state, store having count(laptop_brand)<3
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