相关疑难解决方法(0)

对于大于9.5的版本,请参阅此问题

我使用这个在PostgreSQL中创建了一个表:

CREATE TEMP TABLE jsontesting
AS
  SELECT id, jsondata::jsonb FROM ( VALUES
    (1, '["abra","value","mango", "apple", "sample"]'),
    (2, '["japan","china","india", "russia", "australia"]'),
    (3, '["must", "match"]'),
    (4, '["abra","value","true", "apple", "sample"]'),
    (5, '["abra","false","mango", "apple", "sample"]'),
    (6, '["string","value","mango", "apple", "sample"]'),
    (7, '["must", "watch"]')
  ) AS t(id,jsondata);

现在我想要的是

• 添加像append_to_json_array这样的东西,实际的jsondata是一个json数组,而newString是我必须添加到jsondata数组的,这个函数应该返回更新的json数组.

  UPDATE jsontesting
  SET jsondata=append_to_json_array(jsondata, 'newString')
  WHERE id = 7;
  

  Run Code Online (Sandbox Code Playgroud)

• 从json数据数组中删除一个值,一个用于删除值的函数.

我试图搜索postgreSQL的文档,但没有发现任何内容.