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Query to list all tables and hypertables in a Postgresql / TimescaleDB database with their total size
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| WITH chunks AS ( | |
| SELECT | |
| ht.schema_name AS hypertable_schema, | |
| ht.table_name AS hypertable_name, | |
| ck.table_name AS chunk_name | |
| FROM _timescaledb_catalog.hypertable ht | |
| JOIN _timescaledb_catalog.chunk ck | |
| ON ht.id = ck.hypertable_id | |
| ), | |
| tables_and_chunks AS ( | |
| select | |
| CASE WHEN c.hypertable_name IS NOT NULL THEN 'Hypertable' ELSE 'Table' END AS table_type, | |
| COALESCE(c.hypertable_schema, t.table_schema) AS table_schema, | |
| COALESCE(c.hypertable_name, t.table_name) AS table_name, | |
| pg_table_size('"'||t.table_schema||'"."'||t.table_name||'"') AS table_or_chunk_table_size, | |
| pg_indexes_size('"'||t.table_schema||'"."'||t.table_name||'"') AS table_or_chunk_indexes_size, | |
| pg_total_relation_size('"'||t.table_schema||'"."'||t.table_name||'"') AS table_or_chunk_total_size | |
| from information_schema.tables t | |
| LEFT JOIN chunks c | |
| ON c.chunk_name = t.table_name | |
| ) | |
| SELECT | |
| table_type, | |
| table_schema, | |
| table_name, | |
| pg_size_pretty(SUM(table_or_chunk_table_size)) AS table_size, | |
| pg_size_pretty(SUM(table_or_chunk_indexes_size)) AS indexes_size, | |
| pg_size_pretty(SUM(table_or_chunk_total_size)) AS total_size | |
| FROM tables_and_chunks | |
| WHERE table_schema NOT IN ('pg_catalog', 'information_schema', '_timescaledb_catalog', 'timescaledb_information') | |
| GROUP BY table_type, table_schema, table_name | |
| ORDER BY SUM(table_or_chunk_total_size) DESC; |
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