Mysql学习总结（73）——MySQL 查询A表存在B表不存在的数据SQL总结

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select rcr.* from raw_credit_request as rcr where  rcr.client_order_id not in 
(select co.client_order_id from credit_order as co);

select rcr.* from raw_credit_request as rcr where not exists (select 1 from credit_order 
as co where co.client_order_id =  rcr.client_order_id);

select rcr.* from raw_credit_request as rcr left join credit_order as co on 
(co.client_order_id =  rcr.client_order_id) where co.client_order_id is null;

方案一、

select A.* from raw_credit_request as A where  A.client_order_id not in (select B.client_order_id from credit_order as B);

方案二、

select A.* from raw_credit_request as A where not exists (select 1 from credit_order as B where B.client_order_id =  A.client_order_id);

方案三、

select A.* from raw_credit_request as A left join credit_order as B on (B.client_order_id =  A.client_order_id) where B.client_order_id is null;