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Update CHAR().

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Bruce Momjian 2003-01-12 18:36:22 +00:00
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commit 9392c40553
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Sun Jan 12 09:58:38 EST 2003
Last updated: Sun Jan 12 13:36:11 EST 2003
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
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Type Internal Name Notes
--------------------------------------------------
"char" char 1 character
CHAR(n) bpchar blank padded to the specified fixed length
VARCHAR(n) varchar size specifies maximum length, no padding
CHAR(n) bpchar blank padded to the specified fixed length
TEXT text no specific upper limit on length
"char" char one character
BYTEA bytea variable-length byte array (null-byte safe)
You will see the internal name when examining system catalogs and in
@ -834,9 +834,9 @@ BYTEA bytea variable-length byte array (null-byte safe)
space used is slightly greater than the declared size. However, these
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.
VARCHAR(n) is best when storing variable-length strings but it limits
VARCHAR(n) is best when storing variable-length strings and it limits
how long a string can be. TEXT is for strings of unlimited length,
maximum 1 gigabyte.
with a maximum of one gigabyte.
CHAR(n) is for storing strings that are all the same length. CHAR(n)
pads with blanks to the specified length, while VARCHAR(n) only stores