Bagaimana Anda menemukan ukuran disk dari tabel Postgres / PostgreSQL dan indeksnya?

Coba Fungsi Ukuran Objek Database. Contoh:

SELECT pg_size_pretty(pg_total_relation_size('"<schema>"."<table>"'));

Untuk semua tabel, sesuatu di sepanjang baris:

SELECT
    table_schema || '.' || table_name AS table_full_name,
    pg_size_pretty(pg_total_relation_size('"' || table_schema || '"."' || table_name || '"')) AS size
FROM information_schema.tables
ORDER BY
    pg_total_relation_size('"' || table_schema || '"."' || table_name || '"') DESC;

Sunting:Inilah kueri yang dikirimkan oleh @phord, untuk kenyamanan:

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;

Saya telah memodifikasinya sedikit untuk menggunakan pg_table_size() untuk memasukkan metadata dan membuat ukurannya bertambah.