通过多个键获取 JSONB 中的值 PostgreSQL

Question

我在数据库中有 JSONB，我需要获取数组中的键和值，键可以更改。

示例 JSONB -

{"key": "test2", "key1": "value", "key2": "value1", "key3": "value2", "key4": "value5", "name": "test"}

我试过了

    '@Query(value = "SELECT d.key, d.value " +
            " FROM Table table" +
            " JOIN jsonb_each_text(table.data) d ON true " +
            " WHERE table.type = ?1 AND table.time BETWEEN ?2 AND ?3"+
            " AND d.key IN ?4" , nativeQuery = true)
    List<Object>findByData(String type, Long from, Long to, String[] keys);'

得到了，

    [
    [
        "key",
        "test2"
    ],
    [
        "key1",
        "value"
    ],
    [
        "name",
        "test"
    ]]

但我需要

  [{
      "key":"test2",
      "key1:"value",
      "name":"test"
  }]

如果您有任何想法，请提供帮助。也许有办法改变请求？

Answer 1

尝试将您的列表转换为包含所有键和值的映射。

    // get list of object
    var listOfObjectThatSimulatefindByData = new ArrayList<>(
                    List.of(
                        new Object[]{"key1","value1"}, // any row in database
                        new Object[]{"key2","value2"}  // any row in database
                            )
                    );

    // collect all list into map
    var mapYouNeed = listOfObjectThatSimulatefindByData.stream()
                                                .collect(
                                                    Collectors.toMap(obj -> obj[0] , obj -> obj[1])
                                                    );


    // print
    System.out.println(mapYouNeed);

我们会得到这个输出：

{
key1=value1, 
key2=value2
}