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December 8, 2017 00:41
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check postgresql table size , top 20 tables
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| SELECT nspname || '.' || relname AS "relation", | |
| pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size" | |
| FROM pg_class C | |
| LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace) | |
| WHERE nspname NOT IN ('pg_catalog', 'information_schema') | |
| AND C.relkind <> 'i' | |
| AND nspname !~ '^pg_toast' | |
| ORDER BY pg_total_relation_size(C.oid) DESC | |
| LIMIT 20; |
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version 9.2 +