Node-postgres-json is a light wrap for using the JSON no-sql part of PostgreSQLdont need to know any detail of the postgres JSON operations, and could quickly create collection, insert document, query andsetDbUrl (url) Provide the connection string of pg database. which looks like: "postgres And note that each element is a JSON array inside like the operator > requires. So its an array of JSON arrays. You can use an index for this: Index for finding an element in a JSON array. The manual explicitly states that the operator ?| is for strings only. Ive put together a gist detailing what is currently possible with PostgreSQL 9.2. Using some custom functions, it is possible to do things likeQuery combinations with nested array of records in JSON datatype. Brand Spankin New JSON Support. So, in Postgres 9.3, or the devel version, you can do some really rad querying on json plus a lot of other neato functions for dealing with JSON.The jsonobjectkeys function looks like it could come in handy. Your question doesnt seem to correspond to the data youve shown, but if your table is named users and data is a field in that table with JSON like count:123, then the query.How do I query using fields inside the new PostgreSQL JSON datatype? Postgres 9.2. Update: Hmm, on searching further on GitHub in it looks like JSON support with Postgres might still not be fully baked yet, with below issue still open, so maybe native SQL queries as I guess you were pointing to yourself is the path to follow for now PostgreSQL 9.4 JSON Queries. Intro. Querying JSON with SQL is extremely powerful and convenient.Many useful queries need other great but not widely known features of PosgresSQL like LATERAL joins and recursive queries. PostgreSQL and JSON: 2015. Christophe Pettus PostgreSQL Experts, Inc.We liked JSON so much we created two types. json jsonb json is a pure text 100 iterations per test, top and bottom 10 rejected.
Query execution time only does not include time to return results. You like the ACID qualities of PostgreSQL but rigid data schema are not suitable for your project. In some sense Postgres-JSON is a primitive NoSQL document database.An example user defined query from human-2 and documented in User defined JSON queries I have the following model using JSONB data type in PostgreSQL. The JSON data looks like.Can I get a list of unique keys in all records? i dunno. Whats the Postgresql query youd like to emit? A new feature in PostgreSQL 9.
2 is JSON support. It includes a JSON data type and two JSON functions.The other commonly used technique is arrayagg and arraytojson. arrayagg is a aggregate function like sum or count.