From 181ca96e7a730ba35e973d3361422e6d8a460f88 Mon Sep 17 00:00:00 2001
From: Bruce Momjian
Date: Sat, 10 Aug 2002 20:38:29 +0000
Subject: August 6, 2002    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
---
 contrib/intarray/sql/_int.sql | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'contrib/intarray/sql')

diff --git a/contrib/intarray/sql/_int.sql b/contrib/intarray/sql/_int.sql
index 52313ef7a17..2b0b0d10194 100644
--- a/contrib/intarray/sql/_int.sql
+++ b/contrib/intarray/sql/_int.sql
@@ -6,6 +6,32 @@
 \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;
-- 
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