SQL:2023

SQL:2023 or ISO/IEC 9075:2023 (under the general title "Information technology – Database languages – SQL") is the ninth edition of the ISO (1987) and ANSI (1986) standard for the SQL database query language. It was formally adopted in June 2023.

New features SQL:2023 includes new and updated features. The changes can be grouped into three main areas:

Property graph queries, a graph query language built on top of SQL The new part 16, “Property Graph Queries (SQL/PGQ)”, has been added to the SQL standard.

New features related to JSON JSON data type (T801) Enhanced JSON data type (T802) String-based JSON (T803) Hex integer literals in SQL/JSON path language (T840) SQL/JSON simplified accessor (T860–T864) SQL/JSON item methods (T865–T878) JSON comparison (T879–T882)

Various smaller changes to the existing SQL language (all optional features): UNIQUE null treatment (F292) ORDER BY in grouped table (F868) GREATEST and LEAST (T054) String padding functions (T055) Multi-character TRIM function (T056) Optional string types maximum length (T081) Enhanced cycle mark values (T133) ANY_VALUE (T626) Underscores in numeric literals (T662)

Property Graph Queries (SQL/PGQ)

SQL/PGQ reduces the difference in functionality between relational DBMSs and native graph DBMSs. Basically, this new feature makes it easier to query data in tables as if it were in a graph database, providing a possibly more intuitive alternative to writing complex join queries.

In comparison, the GQL standard for graph DBMSs adds graph updates, querying multiple graphs, and queries that return a graph result rather than a binding table.

SQL:2023

Bron en licentie