RAG Pipeline: Built-in functions for chunking, embedding, ranking, and transforming text Vector Search: Efficient similarity search using pgvector integration Diverse ML Algorithms: 47+ classification and regression algorithms available High Performance: 8-40X faster inference compared to HTTP-based model...
然后,在生成的migration文件中手动添加触发器,在新增或者修改数据时,自动修改索引字段的内容,应用程序不必担心索引同步的问题。 migrationBuilder.Sql(@"CREATE TRIGGER article_title_search_vector_update BEFORE INSERT OR UPDATE ON articles FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger(title_vector, 'pg_...
In text retrieval,full-text searchrefers to techniques for searching a single computer-storeddocumentor a collection in a full-text database. The full-text search is distinguished from searches based on metadata or on parts of the original texts represented in databases. --Wikipedia 这段定义指出了...
#work_mem = 1MB # min 64kB #maintenance_work_mem = 16MB # min 1MB #max_stack_depth = 2MB # min 100kB # - Disk - #temp_file_limit = -1 # limits per-session temp file space # in kB, or -1 for no limit # - Kernel Resource Usage - #max_files_per_process = 1000 # min 2...
which specialize in the rapid lookup of keys with many duplicates — an area where traditional B-tree indexes perform poorly. It also supports GIN indexes, which are particularly useful for JSON and full text searching; and Generalized Search Tree (GIST) indexes, which allow for efficient indexin...
Full text search improvements: phrase search, hunspell morphology, some dictionaries are bundled with distribution and can be enabled by a single SQL statement,shared_ispellallowing to store dictionaries in shared memory 全文检索增强,支持phrase搜索等。
Add an index for each distance function you want to use.L2 distanceCREATE INDEX ON items USING hnsw (embedding vector_l2_ops);Note: Use halfvec_l2_ops for halfvec and sparsevec_l2_ops for sparsevec (and similar with the other distance functions)...
This release brings exciting new features like improved query performance, dynamic logical replication, enhanced JSON functions, and more—all backed by Azure’s reliable managed services. Try out the preview now and share your feedback! For details, read the complete blog ...
Optimization of SET search_path GROUP BY optimization Support planner functions for range types PL/pgSQL: %TYPE and %ROWTYPE arrays Jsonpath: new data conversion methods COPY ... FROM: ignoring format conversion errors to_timestamp: format codes TZ and OF GENERATED AS IDENTITY in partitioned ta...
CONVERT_TO ('Text', 'UTF8') = 'Text' Encode / Decode binary data into or from textual representation in a string. ENCODE (E'1234', 'base64') = 'MTIzNA==' DECODE ('MTIZAAE=', 'base64') = 123 Convert the first letter of each word to upper case and the rest to lower case....