Tag: json

DIFF’ing JSON

While a locally processed web tool like https://github.com/zgrossbart/jdd can be used to identify differences between two JSON files, regular diff can be used from the command line for simple comparisons. Using jq to sort JSON keys, diff will highlight (pipe bars between the two columns, in this example) where differences appear between two JSON files. Since they keys are sorted, content order doesn’t matter much — it’s possible you’d have a list element 1,2,3 in one and 2,1,3 in another, which wouldn’t be sorted. 

[lisa@fedorahost ~]# diff -y <(jq --sort-keys . 1.json) <(jq --sort-keys . 2.json )
{                                                               {
  "glossary": {                                                   "glossary": {
    "GlossDiv": {                                                   "GlossDiv": {
      "GlossList": {                                                  "GlossList": {
        "GlossEntry": {                                                 "GlossEntry": {
          "Abbrev": "ISO 8879:1986",                                      "Abbrev": "ISO 8879:1986",
          "Acronym": "SGML",                                  |           "Acronym": "XGML",
          "GlossDef": {                                                   "GlossDef": {
            "GlossSeeAlso": [                                               "GlossSeeAlso": [
              "GML",                                                          "GML",
              "XML"                                                           "XML"
            ],                                                              ],
            "para": "A meta-markup language, used to create m               "para": "A meta-markup language, used to create m
          },                                                              },
          "GlossSee": "markup",                                           "GlossSee": "markup",
          "GlossTerm": "Standard Generalized Markup Language"             "GlossTerm": "Standard Generalized Markup Language"
          "ID": "SGML",                                                   "ID": "SGML",
          "SortAs": "SGML"                                    |           "SortAs": "XGML"
        }                                                               }
      },                                                              },
      "title": "S"                                                    "title": "S"
    },                                                              },
    "title": "example glossary"                                     "title": "example glossary"
  }                                                               }
}                                                               }

Oracle Query Returns JSON

I’m using Oracle a lot in my new job; and, in the process, I am learning about a lot of neat Oracle database features. Today, I discovered JSON_OBJECT:

SELECT JSON_OBJECT
(KEY 'CDID" VALUE C1.circuit_design_id,
KEY 'NODE_STATUS' VALUE circuit_position.CIRCUIT_NODE_STATUS, KEY "CDID3' VALUE circuit_position.circuit_design_id_3) jsonCircuitResults
FROM circuit C1
LEFT OUTER JOIN circuit_position on C1.circuit_design_id = circuit_position.circuit_design_id
WHERE C1.circuit_design_id = '54535525' and circuit_position.circuit_design_id_3 is not null;

The response is JSON –