我有下面的脚本，它应该为已提供的一系列ID提供价格。
但它需要1每ID的价格，而棘手的部分是，我希望能够有预定的价格更新。
这意味着它需要采用<= UTC_TIMESTAMP的价格小于或等于当前时间。
SELECT
`product_pricing`.`wo_id`,
`product_pricing`.`currency` AS price2_currency,
`product_pricing`.`price` AS price2,
`product_pricing`.`formula_id`,
`product_pricing`.`vat_calculated` AS price2_vat_calculated,
`product_pricing`.`vat_id`,
`product_pricing`.`timestamp_valid`,
`product_price_formulas`.`formula_id`,
`product_price_formulas`.`formula` price2_formula
FROM
`product_pricing`
LEFT JOIN `product_price_formulas`
ON `product_pricing`.`formula_id` = `product_price_formulas`.`formula_id`
WHERE
`product_pricing`.`wo_id` IN (
SELECT
`product_pricing`.`wo_id`,
`product_pricing`.`timestamp_valid`
FROM `product_pricing`
WHERE
`product_pricing`.`wo_id`
IN ('015724', '028791', '015712', '015715', '015717', '039750', '028791')
AND `product_pricing`.`timestamp_valid` <= UTC_TIMESTAMP
ORDER BY `product_pricing`.`timestamp_valid` DESC
)
这可能吗？
样本数据：当前输出
——————————————————————————————————————————————————————————————————
| wo_id | price2 | timestamp_valid
——————————————————————————————————————————————————————————————————
| 028791 | 8000 | 2018-03-20 19:55:41
| 028791 | 6000 | 2018-04-01 19:55:41
| 028791 | 4000 | 2018-04-20 19:55:41
| 015724 | 3000 | 2018-04-18 19:55:41
| 015724 | 1500 | 2018-03-01 19:55:41
....
通缉输出：
——————————————————————————————————————————————————————————————————
| wo_id | price2 | timestamp_valid
——————————————————————————————————————————————————————————————————
| 028791 | 6000 | 2018-04-01 19:55:41
| 015724 | 1500 | 2018-03-01 19:55:41
答案 0 :(得分：1)
我猜你的问题出在IN条款上。
您在IN子句中选择了两个字段。
修改
您需要按wo_id和最大timestamp_valid自行加入子查询。
SELECT
`product_pricing`.`wo_id`,
`product_pricing`.`currency` AS price2_currency,
`product_pricing`.`price` AS price2,
`product_pricing`.`formula_id`,
`product_pricing`.`vat_calculated` AS price2_vat_calculated,
`product_pricing`.`vat_id`,
`product_pricing`.`timestamp_valid`,
`product_price_formulas`.`formula_id`,
`product_price_formulas`.`formula` price2_formula
FROM
`product_pricing`
LEFT JOIN `product_price_formulas` ON `product_pricing`.`formula_id` = `product_price_formulas`.`formula_id`
INNER JOIN
(
SELECT
`product_pricing`.`wo_id`,
MAX(`timestamp_valid`) AS MaxDate
FROM `product_pricing`
WHERE
`product_pricing`.`timestamp_valid` <= UTC_TIMESTAMP
GROUP BY
`product_pricing`.`wo_id`
)as temp ON temp.wo_id = `product_pricing`.`wo_id` AND temp.MaxDate = `product_pricing`.`timestamp_valid`
WHERE
`product_pricing`.`wo_id` IN ('015724', '028791', '015712', '015715', '015717', '039750', '028791')
答案 1 :(得分：0)
我想你想要这样的东西：
SELECT pp.*, ppf.formula_id, ppf.formula as price2_formula
FROM product_pricing pp LEFT JOIN
product_price_formulas ppf
ON pp.formula_id = ppf.formula_id
WHERE (pp.wo_id, pp.timestamp_valid) IN
(SELECT pp2.wo_id, MAX(pp2.timestamp_valid)
FROM product_pricing pp2
WHERE pp2.wo_id IN ('015724', '028791', '015712', '015715', '015717', '039750', '028791') AND
pp2.timestamp_valid <= UTC_TIMESTAMP
);
ORDER BY在子查询中毫无意义，所以这是我对你想要的最好的猜测。
我将此结果与您使用IN的结构相提并论，但我会使用相关的子查询和=：
WHERE pp.timestamp_valid = (SELECT MAX(pp2.timestamp_valid)
FROM product_pricing pp2
WHERE pp2.wo_id = pp.wo_id AND
pp2.timestamp_valid <= UTC_TIMESTAMP
) AND
pp2.wo_id IN ('015724', '028791', '015712', '015715', '015717', '039750', '028791');
答案 2 :(得分：0)
您可以使用最新的valid_timestamp记录的派生结果集来加入product_pricing。
如果我们暂时忽略product_pricing_formula表（因为您没有将其包含在您的样本数据和结果中），这将给出。
SELECT
p.`wo_id`,
p.`price` AS price2,
p.`timestamp_valid`
FROM `product_pricing` p
JOIN (SELECT wo_id, MAX(timestamp_valid) AS max_valid_ts
FROM `product_pricing`
WHERE `timestamp_valid` <= UTC_TIMESTAMP
GROUP BY wo_id) d
ON (d.wo_id = p.wo_id AND d.max_valid_ts = p.timestamp_valid)
WHERE p.`wo_id` IN (015724, 028791);