Dataframes: Demonstrate pandas.read_sql() with both urllib3 vs. psycopg3
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hlcianfagna
approved these changes
Jan 10, 2025
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| To watch the HTTP traffic to your local CrateDB instance, invoke:: | ||
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| sudo ngrep -d lo0 -Wbyline port 4200 |
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Or 5432 if they use the psycopg example
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Yeah, but sniffing the PostgreSQL wire protocol, you will probably not be able to see sensible things as a human. This is different to the HTTP protocol, because it is marshalling from/to JSON.
Do you think anything should be improved here, e.g. by adding such a comment that it only makes sense with HTTP/JSON?
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Just for info, I regularly use this with the pgsql protocol, not everything is human-readable but SQL statements are visible in clear text which is very helpful.
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Ah. Nice to learn about. Thanks! ✨
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People asked about PostgreSQL wire protocol support for reading data from CrateDB into dataframes.
References
asyncpgandpsycopg3drivers sqlalchemy-cratedb#11