CrateDB offers fulltext-indexing and -querying capabilities based on the powerful indexing and search features of Apache Lucene, the same library that also powers Apache Solr, and Elasticsearch.
XML data ingest for CrateDB
Placeholder.
Improve regular expression capabilities
While exploring the regular expression capabilities of CrateDB, we submitted a little patch the other day, to improve them.
Recent developments at CrateDB may also be sensible to apply to this matter.
– Expose KnnVectorField + Query for semantic search applications · Issue #14319 · crate/crate · GitHub