Postgresql Postgres规则有助于CSV导入

我需要导入一个csv文件，每天有10的数千行到一个Postgres数据库。我正在寻找最有效的方法，因为csv文件中的每一行都可以是一条新记录或一条现有记录，如果存在，则应进行更新。经过多次搜索，我偶然发现了一个解决方案，我使用了：

CREATE OR REPLACE RULE insert_on_duplicate_update_advertiser_campaign_keywords_table AS
  ON INSERT TO advertiser_campaign_keywords
  WHERE (new.phrase, new.match_type, new.advertiser_campaign_id) IN (
    SELECT phrase, match_type, advertiser_campaign_id
    FROM advertiser_campaign_keywords
    WHERE phrase = new.phrase AND match_type = new.match_type AND advertiser_campaign_id = new.advertiser_campaign_id AND state != 'deleted')
DO INSTEAD
  UPDATE advertiser_campaign_keywords
  SET bid_price_cpc = new.bid_price_cpc
  WHERE phrase = new.phrase AND match_type = new.match_type AND advertiser_campaign_id = new.advertiser_campaign_id;

这是我找到的最接近工作解决方案，但它还不完整。它在如下所示的插入上失败：

INSERT INTO advertiser_campaign_keywords (phrase, bid_price_cpc, match_type, advertiser_campaign_id) VALUES 
('dollar', 1::text::money, 'Broad', 1450),
('two words', 1.2::text::money, 'Broad', 1450),
('two words', 1.0::text::money, 'Broad', 1450),
('three words exact', 2.5::text::money, 'Exact', 1450),
('four words broad match', 1.1::text::money, 'Exclusive', 1450),
('three words exact', 2.1::text::money, 'Exact', 1450);

错误消息是：

duplicate key value violates unique constraint "unique_phrase_campaign_combo"

独特的\u短语\u活动\u组合看起来像：

CONSTRAINT "unique_phrase_campaign_combo" UNIQUE ("phrase", "advertiser_campaign_id", "match_type", "deleted_at")

除非记录被标记为已删除，否则删除的\u at为空

有人知道我如何解决这个问题吗

---

谢谢

最好的方法是添加一个临时表。使用“复制”填充临时表。然后使用它进行插入和更新

UPDATE target_table t
  SET ...
FROM staging_table s
WHERE t.id = s.id

INSERT INTO target_table
SELECT * FROM staging_table s
WHERE s.id NOT EXISTS (
  SELECT id FROM target_table
)

---

最好的方法是添加一个临时表。使用“复制”填充临时表。然后使用它进行插入和更新

UPDATE target_table t
  SET ...
FROM staging_table s
WHERE t.id = s.id

INSERT INTO target_table
SELECT * FROM staging_table s
WHERE s.id NOT EXISTS (
  SELECT id FROM target_table
)

---

顺便说一句，在MySQL中，你可以使用这里提供的答案：warren:MySQL有insert ignore，postgres没有。在MySQL中，你可以使用这里提供的答案：warren:MySQL有insert ignore，postgres没有