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Rename contrib contains/contained-by operators to @> and <@, per discussion.

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Tom Lane
2006-09-10 17:36:52 +00:00
parent ba920e1c91
commit 684ad6a92f
36 changed files with 1290 additions and 1111 deletions
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contrib/seg/README.seg
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@ -257,16 +257,22 @@ The operators supported by the GiST access method include:
The segments [a, b] and [c, d] overlap.
[a, b] @ [c, d] Contains
[a, b] @> [c, d] Contains
The segment [a, b] contains the segment [c, d], that is,
a <= c and b >= d
[a, b] @ [c, d] Contained in
[a, b] <@ [c, d] Contained in
The segment [a, b] is contained in [c, d], that is,
a >= c and b <= d
(Before PostgreSQL 8.2, the containment operators @> and <@ were
respectively called @ and ~. These names are still available, but are
deprecated and will eventually be retired. Notice that the old names
are reversed from the convention formerly followed by the core geometric
datatypes!)
Although the mnemonics of the following operators is questionable, I
preserved them to maintain visual consistency with other geometric
data types defined in Postgres.