5b2d4e4454
* Add context menu to display database tables stats * Move table stats implementation into client
45 lines
1.6 KiB
SQL
45 lines
1.6 KiB
SQL
WITH columns_counts AS (
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SELECT table_schema, table_name, COUNT(1) AS num
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FROM information_schema.columns
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GROUP BY table_schema, table_name
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),
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indexes_counts AS (
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SELECT schemaname, tablename, COUNT(1) AS num
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FROM pg_indexes
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GROUP BY schemaname, tablename
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)
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SELECT
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tables.schemaname AS schema_name,
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tables.relname AS table_name,
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pg_size_pretty(pg_total_relation_size(tables.relid)) AS total_size,
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pg_size_pretty(pg_relation_size(tables.relid)) AS data_size,
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pg_size_pretty(pg_indexes_size(tables.relid)) AS index_size,
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pg_class.reltuples AS estimated_rows_count,
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CASE
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WHEN pg_class.reltuples >= 0 AND pg_class.reltuples < 1000
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THEN pg_class.reltuples::text
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WHEN pg_class.reltuples >= 1000 AND pg_class.reltuples < 1000000
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THEN ROUND((pg_class.reltuples / 1000))::text || 'K'
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WHEN pg_class.reltuples >= 1000000
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THEN ROUND(pg_class.reltuples / 1000000)::text || 'M'
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END AS estimated_rows,
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CASE
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WHEN pg_class.reltuples > 1000
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THEN ROUND(pg_indexes_size(tables.relid)::numeric / pg_relation_size(tables.relid), 2)
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END AS index_to_data_ratio,
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indexes_counts.num AS indexes_count,
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columns_counts.num AS columns_count
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FROM
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pg_catalog.pg_statio_user_tables AS tables
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LEFT JOIN pg_class
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ON pg_class.oid = tables.relid
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LEFT JOIN indexes_counts
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ON indexes_counts.schemaname = tables.schemaname
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AND indexes_counts.tablename = tables.relname
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LEFT JOIN columns_counts
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ON columns_counts.table_schema = tables.schemaname
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AND columns_counts.table_name = tables.relname
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ORDER BY
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pg_total_relation_size(tables.relid) DESC,
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pg_relation_size(tables.relid) DESC
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