Question

以下是我使用的postgres SQL查询。我需要将此查询更改为在Oracle中运行。

SELECT DISTINCT d.id,
                d.title,
                d.entityname,
                d.abstract,
                d.url,
                d.ranking,
                d.forwardemail,
                d.technologyclass,
                d.technology,
                d.product,
                d.technologytype,
                d.comments,
                d.status,
                d.year,
                d.day,
                d.month,
                d.entitytype,
                d.entitysource,
                d.chapter,
                d.country,
                d.region,
                d.address
FROM   research_data d
WHERE  d.status = 'A'
       AND d.id IN(SELECT e.parent_id
                   FROM   research_data_history e
                   WHERE  e.changed_date::DATE = To_date('02-01-13', 'MM-DD-YY'))

Answer 1

你有什么尝试？在Oracle中运行它时是否收到错误？您只需要从子选择中删除:: DATE。

SELECT
  e.parent_id
FROM
  research_data_history e
WHERE
  e.changed_date = to_date('02-01-13', 'MM-DD-YY')

如何将这个postgres sql查询写入oracle？

1 个答案: