January 2019
Beginner
556 pages
14h 19m
English
Content preview from Learning PostgreSQL 11 - Third Edition
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Character types
The following table shows the various character types:
| Name | Comments | Trailing spaces | Maximum length |
| char | Equivalent to char(1), it must be quoted as shown in the name. | Semantically insignificant | 1 |
| name | Equivalent to varchar(64). Used by Postgres for object names. | Semantically significant | 64 |
| char(n) | Alias: character(n). Fixed-length character where the length is n. Internally called blank padded character (bpchar). | Semantically insignificant | 1 to 10485760 |
| varchar(n) | Alias: character varying(n). Variable-length character where the maximum length is n. | Semantically significant | 1 to 10485760 |
| text | Variable-length character. | Semantically significant | Unlimited |
PostgreSQL provides two general text types—the ...
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