我试图阻止mysql在此查询中创建临时表

SELECT `vendor_id`,SUM(`qty`) AS `qty`

FROM `inventory_transactions`

WHERE `inventory_transactions`.`date`

BETWEEN '2018-10-21 00:00:00' AND '2018-10-22 23:59:59'

GROUP BY `vendor_id`

我试着重新排列索引,使用

SELECT DISTINCT

,

MIN(vendor_id)

MAX(vendor_id)

,添加

COUNT(*)

试图查看是否使用索引进行排序的列。

我有过

ix(date,type,vendor_id)

在每一个变化以及个别指标中。

date

专栏,这不是我想要的。

有人知道怎么修理吗?

表架构

CREATE TABLE `transactions` (

`id` int(11) NOT NULL,

`vendor_id` int(11) DEFAULT NULL,

`type` varchar(50) DEFAULT NULL,

`unit_cost` decimal(10,2) NOT NULL,

`qty` decimal(11,2) DEFAULT NULL,

`location_id` int(11) NOT NULL,

`date` timestamp NOT NULL,

PRIMARY KEY (`id`),

KEY `location_id` (`location_id`),

KEY `type` (`type`),

KEY `vendor_id` (`vendor_id`) USING BTREE,

KEY `date` (`date`,`vendor_id`,`type`) USING BTREE,

CONSTRAINT `transactions_ibfk_1` FOREIGN KEY (`location_id`) REFERENCES `locations` (`id`),

CONSTRAINT `transactions_ibfk_3` FOREIGN KEY (`vendor_id`) REFERENCES `vendors` (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=latin1

解释

+----+-------------+------------------------+------------+-------+----------------------+------------+---------+------+------+----------+-----------------------------------------------------------+

| id | select_type | table | partitions | type | possible_keys | key | key_len | ref | rows | filtered | Extra |

+----+-------------+------------------------+------------+-------+----------------------+------------+---------+------+------+----------+-----------------------------------------------------------+

| 1 | SIMPLE | inventory_transactions | NULL | range | vendor_id,date | date | 4 | NULL | 1196 | 100.00 | Using where; Using index; Using temporary; Using filesort |

+----+-------------+------------------------+------------+-------+----------------------+------------+---------+------+------+----------+-----------------------------------------------------------+

1 row in set, 1 warning (0.00 sec)