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# coding: utf-8 | |
from contextlib import contextmanager | |
import logging | |
import pandas as pd | |
from sqlalchemy import create_engine | |
from sqlalchemy.orm import scoped_session, sessionmaker | |
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* |
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from sqlalchemy import create_engine, event, orm | |
from sqlalchemy.orm import sessionmaker | |
from sqlalchemy.orm.session import Session as SessionBase, object_session | |
from sqlalchemy.event.api import listen | |
# The following adds delete, insert, and update events after successful commits. | |
# SQLAlchemy provides only events after flushes, but not after commits. | |
# The classes are adapted from Flask-SQLAlchemy. | |
# see also https://stackoverflow.com/a/12026787/60982 |
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-- show running queries (pre 9.2) | |
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query | |
FROM pg_stat_activity | |
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' | |
ORDER BY query_start desc; | |
-- show running queries (9.2) | |
SELECT pid, age(clock_timestamp(), query_start), usename, query | |
FROM pg_stat_activity | |
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' |