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24 lines
719 B
Markdown
24 lines
719 B
Markdown
# Get The Size Of An Index
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Want to get an idea of how much disk space that additional index is taking
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up? You can query for it with the same methods discussed in [Get The Size Of
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A Table](get-the-size-of-a-table.md) and [Pretty Print Data
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Sizes](pretty-print-data-sizes.md).
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For instance, if I have a table with a `users_pkey` index and a
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`users_unique_lower_email_idx` index, I can check the sizes like so:
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```sql
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> select pg_size_pretty(pg_relation_size('users_pkey'));
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pg_size_pretty
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----------------
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240 kB
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> select pg_size_pretty(pg_relation_size('users_unique_lower_email_idx'));
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pg_size_pretty
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----------------
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704 kB
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```
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[source](https://www.niwi.nz/2013/02/17/postgresql-database-table-indexes-size/)
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