get_json_int

Description

Syntax

`INT get_json_int(VARCHAR json_str, VARCHAR json_path)

Parse and retrieve the integer content of the specified path in the JSON string. Where json_path must start with the $symbol and use. as the path splitter. If the path contains…, double quotation marks can be used to surround it. Use [] to denote array subscripts, starting at 0. The content of path cannot contain “,[and]. If the json_string format is incorrect, or the json_path format is incorrect, or matches cannot be found, NULL is returned.

example

  1. Get the value of key as “k1”
  1. mysql> SELECT get_json_int('{"k1":1, "k2":"2"}', "$.k1");
  2. +--------------------------------------------+
  3. | get_json_int('{"k1":1, "k2":"2"}', '$.k1') |
  4. +--------------------------------------------+
  5. |                                          1 |
  6. +--------------------------------------------+
  1. Get the second element of the array whose key is “my. key”
  1. mysql> SELECT get_json_int('{"k1":"v1", "my.key":[1, 2, 3]}', '$."my.key"[1]');
  2. +------------------------------------------------------------------+
  3. | get_json_int('{"k1":"v1", "my.key":[1, 2, 3]}', '$."my.key"[1]') |
  4. +------------------------------------------------------------------+
  5. |                                                                2 |
  6. +------------------------------------------------------------------+
  1. Get the first element in an array whose secondary path is k1. key - > K2
  1. mysql> SELECT get_json_int('{"k1.key":{"k2":[1, 2]}}', '$."k1.key".k2[0]');
  2. +--------------------------------------------------------------+
  3. | get_json_int('{"k1.key":{"k2":[1, 2]}}', '$."k1.key".k2[0]') |
  4. +--------------------------------------------------------------+
  5. |                                                            1 |
  6. +--------------------------------------------------------------+

keyword

GET_JSON_INT,GET,JSON,INT