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Query data from schema.table in Postgres

I'm very new to sqlalchemy and I encountered a problem regards to Postgres databases. I can successfully connect to the postgresql database, and I think I've directed the engine to my desired schema.

cstr = f"postgresql+psycopg2://{username}:{password}@{server}:{port}/{database}"
engine = create_engine(cstr,connect_args={'options': '-csearch_path={}'.format("schema_name")},echo=True)
con = engine.connect()
print(con.execute('SELECT * FROM table_name'))

This prints out the correct schema_name.

insp = inspect(con)
print(insp.default_schema_name)

However, I still get error messages saying that the table does not exist.

sqlalchemy.exc.ProgrammingError: (psycopg2.errors.UndefinedTable) relation "table_name" does not exist

I also tried without the ,connect_args={'options': '-csearch_path={}'.format("google")} clause and use schema_name.table_name in the sql query. Same error occurs. It's not a local database, so I can't do anything to the database except getting data from it. What should I do here?

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how do I incorporate this to my query so I can query data from the table?

JimmyLi
– JimmyLi

2021年12月30日 22:58:46 +00:00
Commented Dec 30, 2021 at 22:58

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Query data from schema.table in Postgres

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