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@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active May 3, 2024 16:53
Useful PostgreSQL Queries and Commands
-- 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%'
@kofemann
kofemann / adler32.py
Last active October 15, 2021 07:57
A script to calculate adler32 checksum of given files
#!/usr/bin/env python
'''A script to calculate adler32 checksum of given files'''
BLOCKSIZE=256*1024*1024
import sys
from zlib import adler32
for fname in sys.argv[1:]:
asum = 1
with open(fname,"rb") as f: