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- Import from Numpy 12389
- It is possible to query Numpy arrays from DuckDB. There is no need to register the arrays manually – DuckDB can find them in the Python process by name thanks to replacement scans . For example: import duckdb import numpy as np columns = {
...LECT * FROM columns").fetchall()) [(1, 9.0), (2, 8.0), (3, 7.0)] Each array supplies one column. DuckDB also accepts a two-dimensional array, treating each outer array as a column. Transpose an array whose outer dimension represents rows before querying it.... - https://man.mtool.work/duckdb/2.0/guides/python/import_numpy.html
- Data Ingestion 8654
- This page contains examples for data ingestion to Python using DuckDB. First, import the DuckDB package: import duckdb Then, proceed with any of the following sections. CSV Files CSV files can be read using the read_csv function, called eit
...ee'), (4, 'four')] The same works for Pandas Series, Polars DataFrames, LazyFrames and Series, NumPy arrays, a dict of one-dimensional NumPy arrays, relations and Arrow objects. The masked elements in a NumPy masked array are NULL . In a dict of arrays, nam... - https://man.mtool.work/duckdb/2.0/clients/python/data_ingestion.html
- PostgreSQL Extension 8192
- The postgres extension allows DuckDB to directly read and write data from a running PostgreSQL database instance. The data can be queried directly from the underlying PostgreSQL database. Data can be loaded from PostgreSQL tables into DuckD
...uration parameters. Name Description Default pg_array_as_varchar Read PostgreSQL arrays as varchar - enables reading mixed dimensional arrays false pg_connection_cache Deprecated: whether or not to use connection pooling. To disable pooling, use SET pg_pool... - https://man.mtool.work/duckdb/2.0/core_extensions/postgres/overview.html
- Geometry Data Type 7711
- Name Description GEOMETRY Geospatial entity The GEOMETRY data type is used to store and manipulate geometric objects, such as points, lines, and polygons. The GEOMETRY type was part of the spatial extension but became a built-in data type i
...────┴──────────────────────────────────────────────────────────────────────────────────────────────────────────────┘ Multi-Dimensional Geometries The GEOMETRY type is primarily used to model shapes in two dimensions (e.g. X / Y or longitude / latitude ), bu... - https://man.mtool.work/duckdb/2.0/sql/data_types/geometry.html
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