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- Introduction
- Statements
- Overview
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- CALL
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DuckDB provides a number of functions and PRAGMA
options to retrieve information on the running DuckDB instance and its environment.
Version
The version()
function returns the version number of DuckDB.
SELECT version() AS version;
version |
---|
v1.1.1 |
Using a PRAGMA
:
PRAGMA version;
library_version | source_id |
---|---|
v1.1.1 | af39bd0dcf |
Platform
The platform information consists of the operating system, system architecture, and, optionally, the compiler.
The platform is used when installing extensions.
To retrieve the platform, use the following PRAGMA
:
PRAGMA platform;
On macOS, running on Apple Silicon architecture, the result is:
platform |
---|
osx_arm64 |
On Windows, running on an AMD64 architecture, the platform is windows_amd64
.
On CentOS 7, running on the AMD64 architecture, the platform is linux_amd64_gcc4
.
On Ubuntu 22.04, running on the ARM64 architecture, the platform is linux_arm64
.
Extensions
To get a list of DuckDB extension and their status (e.g., loaded
, installed
), use the duckdb_extensions()
function:
SELECT *
FROM duckdb_extensions();
Meta Table Functions
DuckDB has the following built-in table functions to obtain metadata about available catalog objects:
duckdb_columns()
: columnsduckdb_constraints()
: constraintsduckdb_databases()
: lists the databases that are accessible from within the current DuckDB processduckdb_dependencies()
: dependencies between objectsduckdb_extensions()
: extensionsduckdb_functions()
: functionsduckdb_indexes()
: secondary indexesduckdb_keywords()
: DuckDB's keywords and reserved wordsduckdb_optimizers()
: the available optimization rules in the DuckDB instanceduckdb_schemas()
: schemasduckdb_sequences()
: sequencesduckdb_settings()
: settingsduckdb_tables()
: base tablesduckdb_types()
: data typesduckdb_views()
: viewsduckdb_temporary_files()
: the temporary files DuckDB has written to disk, to offload data from memory