mysql select中子查詢中使用強制索引的優化案例

1，朋友找我幫忙看下比較慢的sql語句 SELECT pg.product_goods_id, pg.product_id, pg.pdt_code, pg.pdt_name, pg.brand_name, pg.reference_price, pg.deposit, pg.sale_status, pg.is_delete, pg.create_date, pg.crea

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