Sql 将select查询合并到更新中

我有一张表格，上面有经过处理的数据，所以我不必在飞行中做这件事。但我必须经常更新表格。表开始变大（700行），更新记录需要相当长的时间

我目前有一组9个查询来更新表，我确信有一种方法可以在一个查询中实现，但我不知道： 以下是我到目前为止提出的问题：

UPDATE checkouts SET total_colors = i.count_result,  FROM (SELECT COUNT(*) AS count_result FROM "checkouts" WHERE class != 'green' OR class is null) i WHERE i.id = checkouts.id
UPDATE checkouts SET sum_red = i.sum_result,  FROM (SELECT SUM("checkouts"."total_workers") AS sum_result FROM "checkouts" WHERE "checkouts"."class" = 'red') i WHERE i.id = checkouts.id
UPDATE checkouts SET sum_red = i.sum_result,  FROM (SELECT SUM("checkouts"."total_workers") AS sum_result FROM "checkouts" WHERE "checkouts"."class" = 'blue') i WHERE i.id = checkouts.id
UPDATE checkouts SET sum_red = i.sum_result,  FROM (SELECT SUM("checkouts"."total_workers") AS sum_result FROM "checkouts" WHERE "checkouts"."class" = 'yellow') i WHERE i.id = checkouts.id
UPDATE checkouts SET sum_red = i.sum_result,  FROM (SELECT SUM("checkouts"."total_workers") AS sum_result FROM "checkouts" WHERE "checkouts"."class" = 'black') i WHERE i.id = checkouts.id
UPDATE checkouts SET green_count = i.count_result,  FROM (SELECT COUNT(*) AS count_result FROM "checkouts" WHERE "checkouts"."company_id" = 113432 AND class = 'green') i WHERE i.id = checkouts.id
UPDATE checkouts SET code = i.code,  FROM (SELECT code FROM greens where code is not null GROUP BY code ORDER BY COUNT(code) DESC LIMIT 1) i WHERE i.company_id = checkouts.company_id
UPDATE checkouts SET code = i.email,  FROM (SELECT email FROM greens where email is not null GROUP BY email ORDER BY COUNT(email) DESC LIMIT 1) i WHERE i.company_id = checkouts.company_id
UPDATE checkouts SET total_workers = i.sum_result,  FROM (SELECT SUM("checkouts"."total_workers") AS sum_result FROM checkouts) i WHERE i.id = checkouts.company_id

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您不应该在详细记录中存储摘要值（除非您确实知道自己在做什么）。一种可能性是在查询表格时进行计算：

SELECT c.*,
       SUM(CASE WHEN class <> 'green' OR class is null THEN 1 ELSE 0 END) OVER (PARTITION BY id),
       SUM(CASE WHEN class = 'red' THEN 1 ELSE 0 END) OVER (PARTITION BY id) as total_red,
       . . . 
FROM checkouts;

选择c*，
求和（当类“绿色”或类为空时，则为1，否则为0结束）超过（按id划分），
将（按id划分的）上的和（当类='red'然后1 ELSE 0 END时的情况）作为total_red，
. . . 
从退房；

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事实上，您的数据结构看起来完全不正确。如果让我猜，您在

签出中有行项目详细信息，并且您正在尝试在中添加
订单级别
摘要。为此，您应该有多个表。这些通常被称为
订单
和
订单行
没有理由在每一行中存储总计。在读取表时，应该只获取值。