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POlist of schema with sizes (relative and absolute) in a PostgreSQL database
 

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  1. POlist of schema with sizes (relative and absolute) in a PostgreSQL database
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    <p>I'm looking for a query that returns a result of the form for any database (see example below supposing total space used by the database is 40GB)</p> <pre><code>schema | size | relative size ----------+------------------- foo | 15GB | 37.5% bar | 20GB | 50% baz | 5GB | 12.5% </code></pre> <p>I've managed to concoct a list of space using entities in the database sorted by schema, which has been useful, but getting a summary per schema from this doesn't look so easy. See below.</p> <pre><code>SELECT relkind, relname, pg_catalog.pg_namespace.nspname, pg_size_pretty(pg_relation_size(pg_catalog.pg_class.oid)) FROM pg_catalog.pg_class INNER JOIN pg_catalog.pg_namespace ON relnamespace = pg_catalog.pg_namespace.oid ORDER BY pg_catalog.pg_namespace.nspname, pg_relation_size(pg_catalog.pg_class.oid) DESC; </code></pre> <p>This gives results like</p> <pre><code> relkind | relname | nspname | pg_size_pretty ---------+---------------------------------------+--------------------+---------------- r | geno | btsnp | 11 GB i | geno_pkey | btsnp | 5838 MB r | anno | btsnp | 63 MB i | anno_fid_key | btsnp | 28 MB i | ix_btsnp_anno_rsid | btsnp | 28 MB [...] r | anno | btsnp_shard | 63 MB r | geno4681 | btsnp_shard | 38 MB r | geno4595 | btsnp_shard | 38 MB r | geno4771 | btsnp_shard | 38 MB r | geno4775 | btsnp_shard | 38 MB </code></pre> <p>It looks like using an aggregation operator like SUM may be necessary, no success with that thus far.</p> <pre><code> Regards, Faheem </code></pre>
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    1. USFaheem Mitha
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      1. USFloppyDisk
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    1. COSorry, mods can't associate your account with other SE site accounts. If you register with the same information on the tex site it should be associated automatically. If not, open a question on meta and ask for assistance there.
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      1. USWill
    2. CO@Will: The information on all these sites should be the same. Ok, I'll take it to meta. Thanks.
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      1. POlist of schema with sizes (relative and absolute) in a PostgreSQL database
      1. USFaheem Mitha
 

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