查出所有数据库大小：
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1 |
select pg_database.datname, pg_database_size(pg_database.datname) AS size from pg_database order by size desc; |
查出所有表按大小排序并分离data与index：
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SELECT table_name, pg_size_pretty(table_size) AS table_size, pg_size_pretty(indexes_size) AS indexes_size, pg_size_pretty(total_size) AS total_size FROM ( SELECT table_name, pg_table_size(table_name) AS table_size, pg_indexes_size(table_name) AS indexes_size, pg_total_relation_size(table_name) AS total_size FROM ( SELECT ('"' || table_schema || '"."' || table_name || '"') AS table_name FROM information_schema.tables ) AS all_tables ORDER BY total_size DESC ) AS pretty_sizes; |
查看索引大小：
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select relname as table_name,pg_size_pretty(pg_relation_size(relid)) as table_size, indexrelname as index_name, pg_size_pretty(pg_relation_size(indexrelid)) as index_size from pg_stat_user_indexes order by pg_relation_size(indexrelid) desc; |