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Instantiate 12521
Overview DuckDB-Wasm can be instantiated in several ways, depending on how your application bundles and serves its assets. Each approach resolves the mainModule (the WebAssembly file) and the mainWorker (the worker script) for the browser's ... nds them to AsyncDuckDB . This page shows the patterns for a jsDelivr CDN, webpack, Vite and statically served files. Once instantiated, the db object is used to import data and run queries . Bundle Selection DuckDB-Wasm ships several WebAssembly modules co ... st worker_url = URL.createObjectURL( new Blob([`importScripts("${bundle.mainWorker}");`], {type: 'text/javascript'}) ); // Instantiate the asynchronous version of DuckDB-Wasm const worker = new Worker(worker_url); const logger = new duckdb.ConsoleLogger(); ... const db = new duckdb.AsyncDuckDB(logger, worker); await db.instantiate(bundle.mainModule, bundle.pthreadWorker); URL.revokeObjectURL(worker_url); webpack When your application is built with web ...
https://man.mtool.work/duckdb/2.0/clients/wasm/instantiation.html
DuckDB Wasm Client 10656
Installation To use the DuckDB Wasm client, visit the duckdb-wasm GitHub repository . The latest stable version of the DuckDB WebAssembly client is 2.0.0. DuckDB-Wasm is a version of DuckDB that has been compiled to WebAssembly , the portab ... an production. Alternatively, load a prebuilt bundle directly from a CDN such as jsDelivr without installing anything; see Instantiate for the bundle-selection options. To try it interactively with no setup, use the DuckDB-Wasm Web shell . Basic API Usage T ... he example below instantiates DuckDB-Wasm from a CDN bundle, opens a connection, runs a query, and reads the result. Instantiate covers the other ways ... d method. The DuckDB-Wasm launch blog post is another good introduction. import * as duckdb from '@duckdb/duckdb-wasm'; // Instantiate DuckDB-Wasm from a jsDelivr bundle const bundle = await duckdb.selectBundle(duckdb.getJsDelivrBundles()); // Worker script ...
https://man.mtool.work/duckdb/2.0/clients/wasm/overview.html
Import Data 8170
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 ... ts can load values inline. The examples below all use a connection named conn , opened from the db object created when you instantiate DuckDB-Wasm . Opening and Closing a Connection Every insert and query runs on a connection. Open one with connect() , and ... o read files directly in SQL. INSERT Statement — DuckDB's SQL-level INSERT , an alternative to the insert functions above. Instantiate — creating the db and connection these imports run on. Troubleshoot — CORS network errors when reading remote files. ...
https://man.mtool.work/duckdb/2.0/clients/wasm/data_ingestion.html
Deploy 8170
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 ... nd compiled to JavaScript code. For further details, see below. JS Worker Component. Compiled to JavaScript code, possibly instantiated multiple times for threaded environments. For further details, see below. Wasm Worker Component. Compiled as a WebAssembl ... y file and instantiated by the browser. For further details, see below. DuckDB Extensions. Any relevant extensions the deployment loads. For furt ... o the wasm_threads extension platform. Wasm Worker Component This is the DuckDB engine itself, compiled to WebAssembly and instantiated by the browser. Like the JS Worker component, it comes in the same three flavors, each paired with the JS worker of the s ...
https://man.mtool.work/duckdb/2.0/clients/wasm/deploying_duckdb_wasm.html
Swift Client 7640
DuckDB has a Swift client. See the announcement post for details. Instantiating DuckDB DuckDB supports both in-memory and persistent databases. To work with an in-memory database, run: let database = try Database(store: .inMemory) To work w ... overyYearColumn = result[0].cast(to: Int.self) let countColumn = result[1].cast(to: Int.self) // Use our DuckDB columns to instantiate TabularData // columns and populate a TabularData DataFrame return DataFrame(columns: [ TabularData.Column(discoveryYearCo ...
https://man.mtool.work/duckdb/2.0/clients/tertiary_clients/swift.html
Run Queries 7640
Overview DuckDB-Wasm provides functions for querying data. Queries are run sequentially: First, create a connection by calling connect . Then, run queries by calling query to materialize the whole result, or send to fetch result chunks lazi ... nd other query-time extensions. Prepared Statements — DuckDB's SQL-level support for the parameterized queries shown here. Instantiate — creating the db that connections are opened on. Troubleshoot — streaming results with send() to stay within the memory l ...
https://man.mtool.work/duckdb/2.0/clients/wasm/query.html
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DuckDB 2.0 Documentation / man.mtool.work