某平台拉鍊設定,長時間運作後會給資料庫帶來備援資料。以下介紹查詢高斯庫表空間大小排名的查詢語句。
語句
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
結果:
清理
truncate table 表名