商品销售情况统计查询优化
为了优化mysql商品销售情况统计查询，以下是建议的优化方案：
去掉创建索引：
修改索引：
优化sql查询：
SELECT g.title,
COUNT(*) AS total,
COALESCE(SUM(o.amount), 0) AS total_amount,
COALESCE(SUM(IF(o.status = 1, o.amount, 0)), 0) AS success_amount,
COALESCE(SUM(IF(o.status = 2, o.amount, 0)), 0) AS failed_amount,
COALESCE(SUM(o.status = 1), 0) AS success_total,
COALESCE(SUM(o.status = 2), 0) AS failed_total
FROM orders AS o
JOIN goods AS g ON g.id = o.goods_id
WHERE o.create_time BETWEEN 'xxx' AND 'yyy'
GROUP BY o.id
ORDER BY total DESC
LIMIT 10考虑使用其他数据库：
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