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Diffstat (limited to 'doc/FAQ')
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1 files changed, 7 insertions, 1 deletions
@@ -1,7 +1,7 @@ Frequently Asked Questions (FAQ) for PostgreSQL - Last updated: Sat Sep 22 20:07:41 EDT 2001 + Last updated: Fri Oct 12 21:32:36 EDT 2001 Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) @@ -790,6 +790,12 @@ BYTEA bytea variable-length byte array (null-safe) data types are also subject to compression or being stored out-of-line by TOAST, so the space on disk might also be less than expected. + CHAR() is best when storing strings that are usually the same length. + VARCHAR() is best when storing variable-length strings, but you want + to limit how long a string can be. TEXT is for strings of unlimited + length, maximum 1 gigabyte. BYTEA is for storing binary data, + particularly values that include NULL bytes. + 4.16.1) How do I create a serial/auto-incrementing field? PostgreSQL supports a SERIAL data type. It auto-creates a sequence and |