Paweł Domański
27 lines
1.4 KiB
SQL
27 lines
1.4 KiB
SQL
/* Requires PostgreSQL 8.4 or greater */
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WITH s AS(
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SELECT SUM(pg_relation_size(quote_ident(n.nspname) || '.' || quote_ident(c.relname))::bigint) AS table_size,
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pg_size_pretty(SUM(pg_relation_size(quote_ident(n.nspname) || '.' || quote_ident(c.relname))::bigint)::bigint) AS table_size_pretty
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FROM pg_class c
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JOIN pg_namespace n ON (n.oid = c.relnamespace)
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WHERE c.relkind = 'r'
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AND c.relname NOT LIKE 'pg_%'
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AND c.relname NOT LIKE 'sql%'
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)
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SELECT s.table_size,
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s.table_size_pretty,
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SUM(pg_relation_size(quote_ident(n.nspname) || '.' || quote_ident(i.indexrelname))::bigint) AS unused_idx_size,
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pg_size_pretty(SUM(pg_relation_size(quote_ident(n.nspname) || '.' || quote_ident(i.indexrelname))::bigint)::bigint) AS unused_idx_size_pretty,
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pg_database_size(current_database()) as db_size,
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pg_size_pretty(pg_database_size(current_database()))as db_size_pretty,
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pg_size_pretty(pg_database_size(current_database()) - SUM(pg_relation_size(quote_ident(n.nspname) || '.' || quote_ident(i.indexrelname))::bigint)::bigint) as db_minus_wasted_space
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FROM s, pg_stat_all_indexes i
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JOIN pg_class c ON (c.oid = i.relid)
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JOIN pg_namespace n ON (n.oid = c.relnamespace)
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JOIN pg_index idx ON (idx.indexrelid = i.indexrelid )
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WHERE i.idx_scan = 0
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AND NOT idx.indisprimary
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AND NOT idx.indisunique
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GROUP BY table_size, table_size_pretty;
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