小编DKo*_*arz的帖子

我有一个数据库,其中每个对象属性存储在一个单独的行中.附加的查询不会在redshift数据库中返回不同的值,但在任何兼容mysql的数据库中进行测试时都会按预期工作.

SELECT DISTINCT distinct_value 
FROM
( 
  SELECT
    uri,
    ( SELECT DISTINCT value_string 
      FROM `test_organization__app__testsegment` AS X 
      WHERE X.uri = parent.uri AND name = 'hasTestString' AND parent.value_string IS NOT NULL ) AS distinct_value 
  FROM `test_organization__app__testsegment` AS parent 
  WHERE     
    uri IN ( SELECT uri 
             FROM `test_organization__app__testsegment` 
             WHERE name = 'types' AND value_uri_multivalue = 'Document'
           )
) AS T 
WHERE distinct_value IS NOT NULL
ORDER BY distinct_value ASC
LIMIT 10000 OFFSET 0