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@rgreenjr
rgreenjr / postgres_queries_and_commands.sql
Last active May 8, 2025 09:19
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%'

How to calculate MaxResolution for WMTS given info in GetCapabilities

For using an arbitrary WMTS-server in OpenLayers you need two values:

  • The MaxResolution
  • A bounds object

Given a WMTS response with a TileMatrixSet defined as:

@tschaub
tschaub / .gitignore
Last active January 20, 2023 14:23
OpenLayers + Webpack
/node_modules/
bundle.js