SELECT a.order_id, a.store_id, a.buyer_id, a.enterprise_id, a.create_user_id, a.state, a.source, a.pay_state, a.ticket_no, a.is_change, a.product_amount, a.box_mortgage_amount, a.fee_amount, a.difference_amount, a.order_amount, a.repayment_amount, a.remaining_amount, a.return_goods_amount, d.NAME create_user, e.buyer_name, e.public_type, a.make_time orderTime, c.is_classes, CASE WHEN b.biz_type = 1 THEN b.ticket_no pendingTicketNo WHEN b.biz_type = 2 THEN b.rela_id returnGoodsId, b.ticket_no returnGoodsNo END FROM order_info AS a LEFT JOIN order_biz_rela AS b ON a.order_id = b.order_id AND b.is_delete = 1 INNER JOIN classes_biz c ON c.biz_id = a.order_id AND c.biz_type = 1 INNER JOIN store_staff AS d ON a.create_user_id = d.user_id AND a.store_id = d.store_id INNER JOIN buyer_info AS e ON a.buyer_id = e.buyer_id WHERE a.order_id ="1679787170515709954"

这是一个查询语句，它从多个表中检索特定订单的信息。它选择了以下列：

- order_id：订单ID
- store_id：店铺ID
- buyer_id：买家ID
- enterprise_id：企业ID
- create_user_id：创建用户ID
- state：订单状态
- source：订单来源
- pay_state：支付状态
- ticket_no：票据号码
- is_change：是否改变
- product_amount：产品金额
- box_mortgage_amount：箱子抵押金额
- fee_amount：费用金额
- difference_amount：差额金额
- order_amount：订单金额
- repayment_amount：还款金额
- remaining_amount：剩余金额
- return_goods_amount：退货金额
- create_user：创建用户名称
- buyer_name：买家名称
- public_type：公共类型
- orderTime：订单时间
- is_classes：是否班级
- pendingTicketNo：待处理票据号码（当biz_type为1时）
- returnGoodsId：退货ID（当biz_type为2时）
- returnGoodsNo：退货号码（当biz_type为2时）

它使用了多个表之间的连接条件，并通过订单ID进行过滤，只选择了订单ID为"1679787170515709954"的记录。

相关问题

SELECT <include refid="Base_Column_List"/>,a.${timeField} orderTime,b.ticket_no pendingTicketNo, f.rela_id returnGoodsId,f.ticket_no returnGoodsNo,c.is_classes FROM order_info AS a LEFT JOIN order_biz_rela AS b ON a.order_id = b.order_id and b.biz_type=1 and b.is_delete=1 INNER JOIN store_staff AS d ON a.create_user_id =d.user_id and a.store_id=d.store_id INNER JOIN buyer_info AS e ON a.buyer_id=e.buyer_id LEFT JOIN order_biz_rela AS f ON a.order_id = f.order_id and f.biz_type=2 and f.is_delete=1 INNER JOIN classes_biz c ON c.biz_id = a.order_id AND c.biz_type = 1 WHERE a.order_id=#{orderId} 优化

这个SQL查询语句可以进行一些优化来提高性能。首先，你可以添加索引来加快连接和筛选操作。你可以为以下列添加索引：a.order_id、b.order_id、b.biz_type、b.is_delete、d.user_id、d.store_id、e.buyer_id、f.order_id、f.biz_type、f.is_delete、c.biz_id和c.biz_type。

另外，你可以考虑使用INNER JOIN代替LEFT JOIN，如果确保关联的表中有匹配的行。

最后，你还可以检查数据库表的设计是否合理，并根据查询的需求进行适当的调整和优化。

优化一下sql语句，提高查询效率。SELECT count(DISTINCT l.user_id) as trade_num,count(DISTINCT r.user_id) as live_numFROM (SELECT DISTINCT buyer_user_id as user_id FROM trade_order_asset WHERE buyer_platform_id = 2 AND status = 10 AND is_import = 0 AND create_time >= toUnixTimestamp('2021-02-01 00:00:00') AND create_time < toUnixTimestamp('2021-03-01 00:00:00') UNION ALL SELECT DISTINCT seller_user_id as user_id FROM trade_order_asset WHERE seller_platform_id = 2 AND status = 10 AND is_import = 0 AND create_time >= toUnixTimestamp('2021-02-01 00:00:00') AND create_time < toUnixTimestamp('2021-03-01 00:00:00') ) lLEFT JOIN ( SELECT DISTINCT buyer_user_id as user_id FROM trade_order_asset WHERE buyer_platform_id = 2 AND status = 10 AND is_import = 0 AND create_time >= toUnixTimestamp('2021-01-01 00:00:00') AND create_time < toUnixTimestamp('2021-02-01 00:00:00') UNION ALL SELECT DISTINCT seller_user_id as user_id FROM trade_order_asset WHERE seller_platform_id = 2 AND status = 10 AND is_import = 0 AND create_time >= toUnixTimestamp('2021-01-01 00:00:00') AND create_time < toUnixTimestamp('2021-02-01 00:00:00') ) r ON l.user_id = toInt64(r.user_id)LEFT JOIN trade_user c ON l.user_id = toInt64(c.id)WHERE c.third_user_id not in (555136127);

可以尝试以下优化：

1. 使用索引：对于需要频繁查询的字段，创建索引可以极大提高查询效率。在这个SQL语句中，可以为以下字段创建索引：buyer_platform_id、status、is_import、create_time、seller_platform_id、buyer_user_id、seller_user_id、third_user_id、id。

2. 减少子查询：子查询的使用会增加查询的时间，可以尝试使用JOIN或者其他方式替代子查询。在这个SQL语句中，可以将子查询替换为JOIN。

3. 减少重复查询的数据：在这个SQL语句中，有多个子查询或者JOIN查询中的条件都是相同的，可以将这些条件提取出来，避免重复查询。

优化后的SQL语句如下：

SELECT
COUNT(DISTINCT l.user_id) AS trade_num,
COUNT(DISTINCT r.user_id) AS live_num
FROM
(
SELECT DISTINCT
buyer_user_id AS user_id
FROM
trade_order_asset
WHERE
buyer_platform_id = 2
AND status = 10
AND is_import = 0
AND create_time >= toUnixTimestamp('2021-02-01 00:00:00')
AND create_time < toUnixTimestamp('2021-03-01 00:00:00')
UNION ALL
SELECT DISTINCT
seller_user_id AS user_id
FROM
trade_order_asset
WHERE
seller_platform_id = 2
AND status = 10
AND is_import = 0
AND create_time >= toUnixTimestamp('2021-02-01 00:00:00')
AND create_time < toUnixTimestamp('2021-03-01 00:00:00')
) l
LEFT JOIN
(
SELECT DISTINCT
buyer_user_id AS user_id
FROM
trade_order_asset
WHERE
buyer_platform_id = 2
AND status = 10
AND is_import = 0
AND create_time >= toUnixTimestamp('2021-01-01 00:00:00')
AND create_time < toUnixTimestamp('2021-02-01 00:00:00')
UNION ALL
SELECT DISTINCT
seller_user_id AS user_id
FROM
trade_order_asset
WHERE
seller_platform_id = 2
AND status = 10
AND is_import = 0
AND create_time >= toUnixTimestamp('2021-01-01 00:00:00')
AND create_time < toUnixTimestamp('2021-02-01 00:00:00')
) r
ON l.user_id = r.user_id
LEFT JOIN
trade_user c
ON l.user_id = c.id
WHERE
c.third_user_id NOT IN (555136127)