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39 lines
849 B
Markdown
39 lines
849 B
Markdown
# Pretty Print Data Sizes
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Use the `pg_size_pretty()` function to pretty print the sizes of data in
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PostgreSQL. Given a `bigint`, it will determine the most human-readable
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format with which to print the value:
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```sql
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> select pg_size_pretty(1234::bigint);
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pg_size_pretty
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----------------
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1234 bytes
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> select pg_size_pretty(123456::bigint);
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pg_size_pretty
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----------------
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121 kB
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> select pg_size_pretty(1234567899::bigint);
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pg_size_pretty
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----------------
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1177 MB
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> select pg_size_pretty(12345678999::bigint);
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pg_size_pretty
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----------------
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11 GB
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```
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This function is particularly useful when used with the
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[`pg_database_size()`](get-the-size-of-a-database.md) and
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[`pg_relation_size()`](get-the-size-of-a-table.md) functions.
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```sql
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> select pg_size_pretty(pg_database_size('hr_hotels'));
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pg_size_pretty
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----------------
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12 MB
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```
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