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Co-authored-by: Dylan <145150333+dmmqz@users.noreply.github.com> Co-authored-by: Lena <126529524+acuteenvy@users.noreply.github.com>
36 lines
1 KiB
Markdown
36 lines
1 KiB
Markdown
# duckdb
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> Client for DuckDB, an in-process analytical SQL engine.
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> More information: <https://duckdb.org>.
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- Start an interactive shell with a transient in-memory database:
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`duckdb`
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- Start an interactive shell on a database file. If the file does not exist, a new database is created:
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`duckdb {{path/to/dbfile}}`
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- Query a CSV, JSON, or Parquet file using SQL:
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`duckdb -c "{{SELECT * FROM 'data_source.[csv|csv.gz|json|json.gz|parquet]'}}"`
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- Directly query a CSV, JSON, or Parquet file using the `file` view:
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`duckdb {{data_source.[csv|csv.gz|json|json.gz|parquet]}} -c "{{ SELECT * FROM file }}"`
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- Run an SQL script:
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`duckdb -f {{path/to/script.sql}}`
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- Run query on database file and keep the interactive shell open:
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`duckdb {{path/to/dbfile}} -cmd "{{SELECT DISTINCT * FROM tbl}}"`
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- Read CSV from `stdin` and write CSV to `stdout`:
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`cat {{path/to/source.csv}} | duckdb -c "{{COPY (FROM read_csv('/dev/stdin')) TO '/dev/stdout' WITH (FORMAT CSV, HEADER)}}"`
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- Start the DuckDB UI, a web interface with notebooks:
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`duckdb -ui`
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