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- Persistent Testing 11333
- By default, all tests are run in in-memory mode (unless --force-storage is enabled). In certain cases, we want to force the usage of a persistent database. We can initiate a persistent database using the load command, and trigger a reload o
... - https://man.mtool.work/duckdb/2.0/dev/sqllogictest/persistent_testing.html
- Unit Tester Configuration 10748
- There are three ways of setting options for the unit tester: Command Line Arguments Configuration File Environment Variables Configuration Options List See the Configuration Options List for the full list of available options. Command Line
...--emit-on-skip Print a SKIP_TEST marker per skipped test --emit-test-events Writes JSON with test events to stderr --force-reload Force reload the test framework --force-restart , --no-force-restart Force restart the database between runs --force-stora... - https://man.mtool.work/duckdb/2.0/dev/sqllogictest/test_configuration.html
- Catch C/C++ Tests 9029
- While we prefer the sqllogic tests for testing most functionality, for certain tests only SQL is not sufficient. This typically happens when you want to test the C++ API. When using pure SQL is really not an option it might be necessary to
...n.Query("CREATE TABLE test2 (a INTEGER);")); REQUIRE_NO_FAIL(con.Query("INSERT INTO test2 VALUES (13), (12), (11)")); } // reload the database from disk a few times for (idx_t i = 0; i < 2; i++) { DuckDB db(storage_database, config.get()); Connection c... - https://man.mtool.work/duckdb/2.0/dev/sqllogictest/catch.html
- EXPORT and IMPORT DATABASE Statements 9029
- The EXPORT DATABASE command allows you to export the contents of the database to a specific directory. The IMPORT DATABASE command allows you to then read the contents again. Examples Export the database to the target directory target_direc
...OW_GROUP_SIZE of 100,000: EXPORT DATABASE 'target_directory' ( FORMAT parquet, COMPRESSION zstd, ROW_GROUP_SIZE 100_000 ); Reload the database again: IMPORT DATABASE 'source_directory'; Alternatively, use a PRAGMA : PRAGMA import_database('source_direc...The file contains a single COPY statement for every table found in the schema. Syntax IMPORT DATABASE The database can be reloaded by using the IMPORT DATABASE command again, or manually by running schema.sql followed by load.sql to re-load the data.... - https://man.mtool.work/duckdb/2.0/sql/statements/export.html
- UPDATE EXTENSIONS 9029
- The UPDATE EXTENSIONS statement allows synchronizing the locally installed extension state with the repository that published a given extension. This statement is the recommended way to keep up to date with new features or bug fixes being r
...olled out by extension developers. Note that DuckDB extensions cannot be reloaded during runtime, therefore UPDATE EXTENSIONS does not reload the updated extensions. To use the updated extensions, resta... - https://man.mtool.work/duckdb/2.0/sql/statements/update_extensions.html
- Instantiate 5593
- 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
...with OPFS By default a DuckDB-Wasm database lives in memory and is lost when the page closes. To persist data across page reloads and sessions, open the database from the browser's Origin Private File System (OPFS) by giving open() a path with the opf...nnect(); await conn.query(`CREATE TABLE t AS SELECT * FROM range(10) AS r(i)`); // Flush changes to OPFS so they survive a reload await conn.query(`CHECKPOINT`); Reopening the same opfs:// path in a later session restores the tables. You can also read... - https://man.mtool.work/duckdb/2.0/clients/wasm/instantiation.html
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