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JsQuery is a language to query jsonb data type, introduced in PostgreSQL release 9.4. It's primary goal is to provide an additional functionality to jsonb (currently missing in PostgreSQL), such as a simple and effective way to search in nested objects and arrays, and more comparison operators with indexes support. We hope, that jsquery will be eventually a part of PostgreSQL. JsQuery is realized as an extension and is not available in the default PostgreSQL installation. It is available from GitHub under the same license as PostgreSQL and supports PostgreSQL 9.4+.
Features
- JsQuery is realized as an extension and not available in default PostgreSQL installation
- JsQuery extension contains jsquery datatype which represents whole JSON query as a single value
- Prefix expressions are expressions given in the form path
- JsQuery extension contains two operator classes (opclasses) for GIN which provide different kinds of query optimization
- JsQuery opclasses perform complex query optimization
- Optimizer evades index evaluation of less selective conditions when possible
Project Samples
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JSONFollow JsQuery
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