select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1971 and month(issue_date)=4 and color_master.color_code=stamps.color_code and color_master.color='Olive Green' order by substring(name,1,1)
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Issue Date >> function.mysql-connect >> function.mysql-connect >> month >> April >> Color >> Olive Green >> Alpha >> R >>