Question

Select count(*) from Merchant where Email in 
(Select SentEmail from MerchantInvitations where MerchantID = '16092') AND 
CreatedOn>  (Select TimeSent from MerchantInvitations where MerchantID = '16092')

I want the count for Merchants satisfying whose email is in SentEmail column in MerchantInvitations
and CreatedOn > Timesent in MerchantInvitations. But i get an error that “Subquery returned more than 1 value. This is permitted when the subquery
follows =,!=,<,<=, etc or when the subquery is used as an expression” Help me out please!! Thanks in advance!

Answer 1

Looks like you sub-query is returning more than one TimeSent which is compared with CreatedOn. To fix this add an ALL specifier as:

Select count(*) from Merchant where 
Email in (Select SentEmail from MerchantInvitations where MerchantID = '16092') AND 
CreatedOn > ALL (Select TimeSent from MerchantInvitations where MerchantID = '16092')