Oracle多字段统计大于某值的sql写法

合在一起的写法 select (select count(h2s) from T_RECEIVE_DATA where h2s>0 ) as h2s,(select count(stench) from T_RECEIVE_DATA where stench>0 )  as stench ,(select count(nh3) from T_RECEIVE_DATA where nh3>0 )  
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