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Update MD5 mention for long values.

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Bruce Momjian
2005-08-11 13:22:07 +00:00
parent 6a60357588
commit e8b842b9d3
2 changed files with 7 additions and 7 deletions
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Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Wed Aug 10 15:29:42 EDT 2005
Last updated: Thu Aug 11 09:21:58 EDT 2005
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -474,9 +474,9 @@
One limitation is that indexes can not be created on columns longer
than about 2,000 characters. Fortunately, such indexes are rarely
needed. Uniqueness is best guaranteed using another column that is an
MD5 hash of the long column, and full text indexing allows for
searching of words within the column.
needed. Uniqueness is best guaranteed by a funtion index of an MD5
hash of the long column, and full text indexing allows for searching
of words within the column.
4.5) How much database disk space is required to store data from a typical
text file?