SQL:2023
2023 edition of the SQL standard
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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.[1] The changes can be grouped into three main areas:
- Property graph queries, a graph query language built on top of SQL
- New features related to JSON[3]
- 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.[4]
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.[5]
See also
