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- Full-Text Search Extension 14176
- Full-Text Search is an extension to DuckDB that allows for search through strings, similar to SQLite's FTS5 extension . Installing and Loading The fts extension will be transparently autoloaded on first use from the official extension repos
...t_table VARCHAR Qualified name of specified table, e.g., 'table_name' or 'main.table_name' input_id VARCHAR Column name of document identifier, e.g., 'document_identifier' input_values... VARCHAR Column names of the text fields to be indexed (vararg), e....emental BOOLEAN Whether to maintain the FTS index with triggers after inserts and deletes on the input table. Requires the document identifier column to be declared NOT NULL or PRIMARY KEY . Defaults to 0 This PRAGMA builds the index under a newly create...his retrieval macro is created that can be used to search the index. Name Type Description input_id VARCHAR Column name of document identifier, e.g., 'document_identifier' query_string VARCHAR The string to search the index for fields VARCHAR Comma-separ... - https://man.mtool.work/duckdb/2.0/core_extensions/full_text_search.html
- Deploy 9063
- Overview Deploying DuckDB-Wasm means serving its components so that the browser can fetch and instantiate them. This page describes each component a deployment needs to serve, how the worker and WebAssembly variants relate, how extensions a
...the application/wasm content type so the browser can compile them efficiently. Host them anywhere reachable from the main document — the same origin or an arbitrary [sub-]domain. The main library component is told each module's location through the bund...owsers only expose SharedArrayBuffer to pages that are cross-origin isolated . To serve the threaded bundle, the top-level document must be delivered with the following HTTP headers: Cross-Origin-Embedder-Policy: require-corp Cross-Origin-Opener-Policy:...same-origin These headers isolate the document from other cross-origin documents and require any cross-origin resource it embeds to explicitly opt in. Because many third... - https://man.mtool.work/duckdb/2.0/clients/wasm/deploying_duckdb_wasm.html
- JSON Processing Functions 9010
- JSON Extraction Functions There are two extraction functions, which have their respective operators. The operators can only be used if the string is stored as the JSON logical type. These functions support the same two location notations as
...and clean up JSON patches. They complement the json_merge_patch function , which applies a RFC 7396 merge patch to a JSON document. For an end-to-end example of using these functions in a data reconciliation pipeline, see the “Reconciling JSON in DuckDB...Patch at a Time” blog post . Function Description json_deep_merge(json, patch[, ...]) Recursively merge one or more patch documents into json , applied left to right. Works like json_merge_patch , except that a JSON null value in a patch keeps the origi...nested inside arrays. null array elements are kept and scalar values are returned unchanged. Compute the patch between two documents: SELECT json_merge_patch_diff('{"a": 1, "b": 2, "c": 3}', '{"a": 1, "b": 99, "d": 4}'); {"c":null,"b":99,"d":4} Applying... - https://man.mtool.work/duckdb/2.0/data/json/json_functions.html
- Python Client API 8348
- Connection class duckdb. Appender Bases: object append_row ( self , * args ) → None Buffer one row, one value per column, each converted as an executemany parameter would be append_rows ( self , rows : object ) → None Buffer each row of an
...expression_namespaces. JsonExpr ( * args : object , ** kwargs : object ) JSON functions, applied to this expression as the document. SPEC : ClassVar [ dict [ str , tuple [ str , int , list [ str ] ] ] ] = {'array_length': ('json_array_length', 0, ['JSON'...n_merge_patch_diff function. Arguments: new. SQL: json_merge_patch_diff . normalize ( * args : ValueOrExpr ) → StrExpr The document minified, with object keys sorted. SQL: json_normalize . parse ( * args : ValueOrExpr ) → JsonExpr The text parsed as a JS...ON document, minified. SQL: json . pretty ( * args : ValueOrExpr ) → StrExpr The document printed with indentation. SQL: json_pretty .... - https://man.mtool.work/duckdb/2.0/clients/python/reference/
- Troubleshoot 8277
- Overview This page collects common issues encountered when using DuckDB-Wasm, together with their workarounds. If you run into a problem that is not covered here, search the duckdb-wasm issue tracker on GitHub. Network Error When Querying R
...bundle relies on SharedArrayBuffer , which browsers only expose to pages that are cross-origin isolated . If the top-level document is not served with the Cross-Origin-Embedder-Policy and Cross-Origin-Opener-Policy headers, DuckDB-Wasm falls back to the... - https://man.mtool.work/duckdb/2.0/clients/wasm/troubleshoot.html
- Import Data 8152
- Overview DuckDB-Wasm has multiple ways to import data, depending on the format of the data. Importing happens in two steps. The data file is registered in a virtual file system using one of the register functions ( registerFileBuffer , regi
...new Int32(), col2: new Utf8(), }, }); JSON insertJSONFromPath() accepts both row-major and column-major JSON. Register the document first, then insert it: // Row-major format const jsonRowContent = [ { "col1": 1, "col2": "foo" }, { "col1": 2, "col2": "ba... - https://man.mtool.work/duckdb/2.0/clients/wasm/data_ingestion.html
- Spatial Functions 8152
- Function Index Scalar Functions Function Summary DuckDB_PROJ_Compiled_Version Returns a text description of the PROJ library version that this instance of DuckDB was compiled against. DuckDB_Proj_Version Returns a text description of the PR
...T_AsGeoJSON (geom GEOMETRY) Description Returns the geometry as a GeoJSON fragment This does not return a complete GeoJSON document, only the geometry fragment. To construct a complete GeoJSON document or feature, look into using the DuckDB JSON extensio...a SVG fragment or path The SVG fragment is returned as a string. The fragment is a path element that can be used in an SVG document. The second boolean argument specifies whether the path should be relative or absolute. The third argument specifies the m...rder even though [longitude, latitude] is commonly used in practice (e.g. in GeoJSON ). More details available in the PROJ documentation . DuckDB spatial vendors its own static copy of the PROJ database of coordinate systems, so if you have your own inst... - https://man.mtool.work/duckdb/2.0/core_extensions/spatial/functions.html
- Versioning of Extensions 8080
- Extension Versioning Most software has some sort of version number. Version numbers serve a few important goals: Tie a binary to a specific state of the source code Allow determining the expected feature set Allow determining the state of t
...y or may not coincide with DuckDB releases. To find out more about the release cycle of a specific extension, refer to the documentation or GitHub page of the respective extension. Generally, pre-release and stable extensions will document their releases... - https://man.mtool.work/duckdb/2.0/extensions/versioning_of_extensions.html
- Release Cycle 8027
- This document outlines the DuckDB and core extension release cycle framework. It is intended for developers working on DuckDB extensions to better understand the underlying processes. Overview DuckDB follows Semantic Versioning ( v<MAJOR>.<
...enerally happens through the duckdb/duckdb CI. This means that the list of extensions that will be available on release is documented in the extension config files . However, this config file may not always be up to date. To decide which version of an ex... - https://man.mtool.work/duckdb/2.0/dev/release_cycle.html
- Struct Data Type 8027
- Conceptually, a STRUCT column contains an ordered list of columns called “entries”. The entries are referenced by name using strings. This document refers to those entry names as keys. Each row in the STRUCT column must have the same keys.
...e , which can be created using the row function or the (expr, ...) notation. See an example below and the STRUCT functions documentation for details. See the data types overview for a comparison between nested data types. Creating Structs Structs can be... - https://man.mtool.work/duckdb/2.0/sql/data_types/struct.html
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