mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-22 06:33:23 +02:00
1. Reworked patch from Andrey Oktyabrski (ano@spider.ru) with functions: icount, sort, sort_asc, uniq, idx, subarray operations: #, +, -, |, & FUNCTIONS: int icount(int[]) - the number of elements in intarray int[] sort(int[], 'asc' | 'desc') - sort intarray int[] sort(int[]) - sort in ascending order int[] sort_asc(int[]),sort_desc(int[]) - shortcuts for sort int[] uniq(int[]) - returns unique elements int idx(int[], int item) - returns index of first intarray matching element to item, or '0' if matching failed. int[] subarray(int[],int START [, int LEN]) - returns part of intarray starting from element number START (from 1) and length LEN. 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 - 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 int[] - int[] - remove left array from right int[] | int - returns intarray - union of arguments int[] | int[] - returns intarray as a union of two arrays int[] & int[] - returns intersection of arrays Oleg Bartunov
111 lines
3.7 KiB
PL/PgSQL
111 lines
3.7 KiB
PL/PgSQL
--
|
|
-- first, define the datatype. Turn off echoing so that expected file
|
|
-- does not depend on contents of seg.sql.
|
|
--
|
|
\set ECHO none
|
|
\i _int.sql
|
|
\set ECHO all
|
|
|
|
select intset(1234);
|
|
select icount('{1234234,234234}');
|
|
select sort('{1234234,-30,234234}');
|
|
select sort('{1234234,-30,234234}','asc');
|
|
select sort('{1234234,-30,234234}','desc');
|
|
select sort_asc('{1234234,-30,234234}');
|
|
select sort_desc('{1234234,-30,234234}');
|
|
select uniq('{1234234,-30,-30,234234,-30}');
|
|
select uniq(sort_asc('{1234234,-30,-30,234234,-30}'));
|
|
select idx('{1234234,-30,-30,234234,-30}',-30);
|
|
select subarray('{1234234,-30,-30,234234,-30}',2,3);
|
|
select subarray('{1234234,-30,-30,234234,-30}',-1,1);
|
|
select subarray('{1234234,-30,-30,234234,-30}',0,-1);
|
|
|
|
select #'{1234234,234234}'::int[];
|
|
select '{123,623,445}'::int[] + 1245;
|
|
select '{123,623,445}'::int[] + 445;
|
|
select '{123,623,445}'::int[] + '{1245,87,445}';
|
|
select '{123,623,445}'::int[] - 623;
|
|
select '{123,623,445}'::int[] - '{1623,623}';
|
|
select '{123,623,445}'::int[] | 623;
|
|
select '{123,623,445}'::int[] | 1623;
|
|
select '{123,623,445}'::int[] | '{1623,623}';
|
|
select '{123,623,445}'::int[] & '{1623,623}';
|
|
|
|
|
|
--test query_int
|
|
select '1'::query_int;
|
|
select ' 1'::query_int;
|
|
select '1 '::query_int;
|
|
select ' 1 '::query_int;
|
|
select ' ! 1 '::query_int;
|
|
select '!1'::query_int;
|
|
select '1|2'::query_int;
|
|
select '1|!2'::query_int;
|
|
select '!1|2'::query_int;
|
|
select '!1|!2'::query_int;
|
|
select '!(!1|!2)'::query_int;
|
|
select '!(!1|2)'::query_int;
|
|
select '!(1|!2)'::query_int;
|
|
select '!(1|2)'::query_int;
|
|
select '1&2'::query_int;
|
|
select '!1&2'::query_int;
|
|
select '1&!2'::query_int;
|
|
select '!1&!2'::query_int;
|
|
select '(1&2)'::query_int;
|
|
select '1&(2)'::query_int;
|
|
select '!(1)&2'::query_int;
|
|
select '!(1&2)'::query_int;
|
|
select '1|2&3'::query_int;
|
|
select '1|(2&3)'::query_int;
|
|
select '(1|2)&3'::query_int;
|
|
select '1|2&!3'::query_int;
|
|
select '1|!2&3'::query_int;
|
|
select '!1|2&3'::query_int;
|
|
select '!1|(2&3)'::query_int;
|
|
select '!(1|2)&3'::query_int;
|
|
select '(!1|2)&3'::query_int;
|
|
select '1|(2|(4|(5|6)))'::query_int;
|
|
select '1|2|4|5|6'::query_int;
|
|
select '1&(2&(4&(5&6)))'::query_int;
|
|
select '1&2&4&5&6'::query_int;
|
|
select '1&(2&(4&(5|6)))'::query_int;
|
|
select '1&(2&(4&(5|!6)))'::query_int;
|
|
|
|
|
|
CREATE TABLE test__int( a int[] );
|
|
|
|
\copy test__int from 'data/test__int.data'
|
|
|
|
SELECT count(*) from test__int WHERE a && '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23|50';
|
|
SELECT count(*) from test__int WHERE a @ '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23&50';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}';
|
|
SELECT count(*) from test__int WHERE a @@ '50&68';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
|
|
SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
|
|
|
|
CREATE INDEX text_idx on test__int using gist ( a gist__int_ops );
|
|
|
|
SELECT count(*) from test__int WHERE a && '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23|50';
|
|
SELECT count(*) from test__int WHERE a @ '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23&50';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}';
|
|
SELECT count(*) from test__int WHERE a @@ '50&68';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
|
|
SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
|
|
|
|
drop index text_idx;
|
|
CREATE INDEX text_idx on test__int using gist ( a gist__intbig_ops );
|
|
|
|
SELECT count(*) from test__int WHERE a && '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23|50';
|
|
SELECT count(*) from test__int WHERE a @ '{23,50}';
|
|
SELECT count(*) from test__int WHERE a @@ '23&50';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}';
|
|
SELECT count(*) from test__int WHERE a @@ '50&68';
|
|
SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
|
|
SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
|
|
|