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MySql数据库索引优化
2022-08-03 09:38:00 【CSDN问答】
dw_bill_detail_full_yw表已建索引字段precinctname、paidYear、paidMonth、paidDay，
EXPLAIN select precinctname,paidYear,paidMonth,paidDay,sum(chargepaid) chargepaid from dw_bill_detail_full_yw GROUP BY precinctname,paidYear,paidMonth,paidDay order by precinctname,paidYear,paidMonth,paidDay;但是提示 Using temporary; Using filesort，需要怎么优化索引？
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