如果元素包含SQL指定的字符串则过滤掉数组元素

Question

我有如下所示的示例数据，我想提取仅具有名称及其完整键而不是 dep_names 及其完整键的元素。

我正在尝试如下所示，

WITH dataset AS 
(
   SELECT '{"name": "Bob Smith",
             "org": "engineering",
             "projects": [{"dep_namename":"project1", "completed":false},{"name":"project2", "completed":false},{"name":"project3", "completed":true}]}'
     AS myblob
)
SELECT filter(json_query(myblob, 'lax $.projects[*]' with array wrapper),x -> x like '%name%')  AS project_name
FROM dataset

我期待如下的输出

[{"name":"project2", "completed":false},{

“名称”：“项目3”，“已完成”：true}]

Answer 1

尝试直接在查询中使用

exists

过滤器：

SELECT json_query(myblob, 'lax $.projects[*]?(exists(@.name))' with array wrapper) AS project_name
FROM dataset;

输出：

                                 project_name                                 
------------------------------------------------------------------------------
 [{"name":"project2","completed":false},{"name":"project3","completed":true}] 
(1 row)