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

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This commit is contained in:
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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22
contrib/intarray/README.intarray
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@ -70,10 +70,10 @@ test=# select intset(1);
OPERATIONS:
int[] && int[] - overlap - returns TRUE if arrays has at least one common elements.
int[] @ int[] - contains - returns TRUE if left array contains right array
int[] ~ int[] - contained - returns TRUE if left array is contained in right array
# int[] - return the number of elements in array
int[] && int[] - overlap - returns TRUE if arrays have at least one common element
int[] @> int[] - contains - returns TRUE if left array contains right array
int[] <@ int[] - contained - returns TRUE if left array is contained in right array
# int[] - returns the number of elements in array
int[] + int - push element to array ( add to end of array)
int[] + int[] - merge of arrays (right array added to the end of left one)
int[] - int - remove entries matched by right argument from array
@ -81,8 +81,14 @@ OPERATIONS:
int[] | int - returns intarray - union of arguments
int[] | int[] - returns intarray as a union of two arrays
int[] & int[] - returns intersection of arrays
int[] @@ query_int - returns TRUE if array satisfies query (like '1&(2|3)')
query_int ~~ int[] - -/-
int[] @@ query_int - returns TRUE if array satisfies query (like '1&(2|3)')
query_int ~~ int[] - returns TRUE if array satisfies query (commutator of @@)
(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!)
CHANGES:
@ -128,9 +134,9 @@ CREATE INDEX message_rdtree_idx on message using gist ( sections gist__int_ops);
select message.mid from message where message.sections && '{1,2}';
-- select messages contains in sections 1 AND 2 - CONTAINS operator
select message.mid from message where message.sections @ '{1,2}';
select message.mid from message where message.sections @> '{1,2}';
-- the same, CONTAINED operator
select message.mid from message where '{1,2}' ~ message.sections;
select message.mid from message where '{1,2}' <@ message.sections;
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