题解 | 获取指定客户每月的消费额
select date_format(t_time,'%Y-%m')time, sum(t_amount)total from trade where t_cus= (select c_id from customer where c_name='Tom') and year(t_time)=2023 and t_type=1 group by date_format(t_time,'%Y-%m') order by time;
注意区分消费金额和转账。
select date_format(t_time,'%Y-%m')time, sum(t_amount)total from trade where t_cus= (select c_id from customer where c_name='Tom') and year(t_time)=2023 and t_type=1 group by date_format(t_time,'%Y-%m') order by time;
注意区分消费金额和转账。
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