mysql一次查詢，返回多個統計結果

1.sum(if)sql select sum(if(status=1,1,0)) as s1_count, sum(if(status=2,1,0)) as s2_count from order; 2.count()code select count(status=1 or null) as s1_count, count(status=2 or null) as s2_count fro

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