SQLAlchemy - Getting a list of tables

Question

I couldn\'t find any information about this in the documentation, but how can I get a list of tables created in SQLAlchemy?

I used the class method to create the tab

Answer 1

The metadata object that you created the tables with has that in a dictionary.

metadata.tables.keys()

Answer 2

Just this simple:

engine.table_names()

Also, to test whether a table exists:

engine.has_table(table_name)

Answer 3

from sqlalchemy import create_engine
engine = create_engine('postgresql://use:pass@localhost/DBname')
print (engine.table_names())

Answer 4

I was looking for something like this:

from sqlalchemy import create_engine
eng = create_engine('mysql+pymysql://root:password@localhost:3306', pool_recycle=3600)
q = eng.execute('SHOW TABLES')

available_tables = q.fetchall()

It does an execute and returns all of the tables.

update:

Postgres:

eng = create_engine('postgresql+psycopg2://root:password@localhost/
q = eng.execute('SELECT * FROM pg_catalog.pg_tables')

Answer 5

I'm solving same problem and found this post. After some try run, I would suggest use below to list all tables: (mentioned by zerocog)

metadata = MetaData()
metadata.reflect(bind=engine)
for table in metadata.sorted_tables:
    print(table)

This is useful for direct table handling and I feel is recommended.

And use below code to get table names:

for table_name in engine.table_names():
    print(table_name)

"metadata.tables" provides a Dict for table name and Table object. which would also be useful for quick query.

Answer 6

Within the python interpreter use db.engine.table_names()

$ python
>>> from myapp import db
>>> db.engine.table_names()