Question

我需要找到PostgreSQL数据库（9.5）中的所有记录，其中connections JSONB列包含包含一些信息的哈希数组。此搜索查询必须不区分大小写。

例如，列为[{"type":"email", "value":"john@test.com", "comment": "Test"}, {"type":"skype", "value":"john.b", "comment": "Test2"}]）。我需要找到记录，其中connections列包含类型为“skype”的条目，值为“JOHN.B”。

# SELECT * FROM contacts;
  id | email |  connections                              
  ---+-------+------------------------------------------------------------------------------
   1 | asd   | [{"type": "email", "value": "john@test.com"}, {"type": "skype", "value": "john.b"}]

我该怎么办？感谢。

Answer 1

WITH t(id,email,connections) AS ( VALUES
  (1,'test','[
    {"type": "email", "value": "john@test.com"},
    {"type": "skype", "value": "john.b"}
  ]'::JSONB)
)
SELECT * FROM t
WHERE connections @> '[{"type": "skype"}]' 
AND connections @> '[{"value": "john.b"}]';

结果：

 id | email |                                     connections                                     
----+-------+-------------------------------------------------------------------------------------
  1 | test  | [{"type": "email", "value": "john@test.com"}, {"type": "skype", "value": "john.b"}]
(1 row)

Answer 2

以下是使用>@的一种方法：

where connections @> '{"type":"skype"}' and
      connections @> '{"value":"john.b"}')

PSQL：查找记录，其中包含哈希数组的JSONB字段包含一些不区分大小写的值

2 个答案: