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- Agent Mode 12868
- New Agent mode was introduced in DuckDB 2.0. Agent mode renders the CLI's output for consumption by an AI coding agent rather than a human at a terminal. It produces compact Markdown tables with explicit result limits, machine-readable erro
...e forces the mode on ( 1 ) or off ( 0 ). The command line flags take precedence over the environment variable. To hide the startup line that announces agent mode, set .startup_text none as the first line in ~/.duckdbrc . For example, to force agent mode... - https://man.mtool.work/duckdb/2.0/clients/cli/agent_mode.html
- Command Line Arguments 11290
- The table below summarizes DuckDB's command line options. To list all command line options, use the command: duckdb -help For a list of dot commands available in the CLI shell, see the Dot Commands page . Argument Description -agent Render
...mat-file FILENAME Format the SQL in FILENAME , writing the result to stdout -init FILENAME Run the script in FILENAME upon startup (instead of ~/.duckdbrc ) -header Turn headers on -h Show the help message -help Show the help message -html Set output mo...42 [{"world":84}] The -init script (or the default ~/.duckdbrc when -init is not given) is an exception: it always runs at startup, before any -cmd , -c , or -s command, regardless of where it appears on the command line. You therefore cannot use a -cmd... - https://man.mtool.work/duckdb/2.0/clients/cli/arguments.html
- Securing Extensions 11290
- DuckDB has a powerful extension mechanism, which has the same privileges as the user running DuckDB's (parent) process. This introduces security considerations. Therefore, we recommend reviewing the configuration options listed on this page
...ult security level. Any extension including unsigned Any extensions can be loaded. Set allow_unsigned_extensions = true at startup (e.g., duckdb -unsigned in the CLI). It cannot be changed while the database is running. Security-related configuration se...provided repositories, so while signature checking is enabled ( allow_unsigned_extensions = false ), it can only be set at startup, not while the database is running. If you run DuckDB in an environment where only extensions signed by the DuckDB team sh... - https://man.mtool.work/duckdb/2.0/operations_manual/securing_duckdb/securing_ext...
- Overview 10500
- Installation To use the DuckDB C API, download the libduckdb archive for your platform. The latest stable version of the DuckDB C API is 2.0.0. DuckDB implements a custom C API modeled somewhat following the SQLite C API. The API is contain
...ed in the duckdb.h header. Continue to Startup & Shutdown to get started, or check out the Full API overview . C API v2 Warning The C API v2 is not yet stable. Its inter... - https://man.mtool.work/duckdb/2.0/clients/c/overview.html
- Command Line Client 8939
- Installation To use the DuckDB CLI client, visit the CLI installation page . The latest stable version of the DuckDB command line client is 2.0.0. Installation The DuckDB CLI (Command Line Interface) is a single, dependency-free executable.
...------:| | 0 | | 1 | | 2 | | 3 | | 4 | | 5 | Configuring the CLI Several dot commands can be used to configure the CLI. On startup, the CLI reads and executes all commands in the file ~/.duckdbrc , including dot commands and SQL statements. This allows..., ~/.duckdb_history , and the extension directory ~/.duckdb/extensions . If the home directory is missing or not writable, startup can fail with an error such as IO Error: Failed to create directory . In sandboxed or restricted environments, set the HOM... - https://man.mtool.work/duckdb/2.0/clients/cli/overview.html
- Deploy as Native Image 8544
- Overview The JDBC driver runs inside GraalVM Native Image executables. Graal Native Image compiles a Java application ahead of time into a standalone binary that starts in milliseconds and requires no JVM on the target machine, which suits
...MB. The driver extracts the library to a temporary directory when the first connection opens, which adds up to a second of startup time and requires a writable temporary directory. Option 2: Ship the Library Next to the Executable Build without any reso... - https://man.mtool.work/duckdb/2.0/clients/java/deploy_native_image.html
- C++ API 8150
- Installation To use the DuckDB C++ API, download the libduckdb archive for your platform. The latest stable version of the DuckDB C++ API is 2.0.0. Warning DuckDB's C++ API is internal. It is not guaranteed to be stable and can change witho
...the database instance and QueryResult instances as the result of queries. The header file for the C++ API is duckdb.hpp . Startup & Shutdown To use DuckDB, you must first initialize a DuckDB instance using its constructor. DuckDB() takes as parameter t... - https://man.mtool.work/duckdb/2.0/clients/cpp.html
- Troubleshoot 8150
- Overview This page collects common issues encountered when using the DuckDB Go client, together with their workarounds. Because the client uses cgo to embed DuckDB, most build problems are cgo or linker problems. If you run into a problem t
...ne static archive per extension (e.g., libparquet_extension.a ), and statically linked extensions have to be registered at startup. See Statically Linking Extensions for the archives, the required link order and the extension registration. Then build th... - https://man.mtool.work/duckdb/2.0/clients/go/troubleshoot.html
- Secrets Manager 8150
- The Secrets manager provides a unified user interface for secrets across all backends that use them. Secrets can be scoped, so different storage prefixes can have different secrets, allowing for example to join data across organizations in
...orked previously. Persistent secrets are stored in unencrypted binary format in the ~/.duckdb/stored_secrets directory. On startup of DuckDB, persistent secrets are read from this directory and automatically loaded. Secret Providers To create a secret,... - https://man.mtool.work/duckdb/2.0/configuration/secrets_manager.html
- Extension Distribution 8150
- Platforms Extension binaries are distributed for several platforms (see below). For platforms where packages for certain extensions are not available, users can build them from source and install the resulting binaries manually . Most offic
...le the allow_unsigned_extensions flag. To load unsigned extensions using the CLI client , pass the -unsigned flag to it on startup: duckdb -unsigned Now any extension can be loaded, signed or not: LOAD './some/local/ext.duckdb_extension'; For client API... - https://man.mtool.work/duckdb/2.0/extensions/extension_distribution.html
DuckDB 2.0 Documentation / man.mtool.work