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181ca96e7a
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
--
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-- first, define the datatype. Turn off echoing so that expected file
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-- does not depend on contents of seg.sql.
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--
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\set ECHO none
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\i _int.sql
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\set ECHO all
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select intset(1234);
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select icount('{1234234,234234}');
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select sort('{1234234,-30,234234}');
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select sort('{1234234,-30,234234}','asc');
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select sort('{1234234,-30,234234}','desc');
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select sort_asc('{1234234,-30,234234}');
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select sort_desc('{1234234,-30,234234}');
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select uniq('{1234234,-30,-30,234234,-30}');
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select uniq(sort_asc('{1234234,-30,-30,234234,-30}'));
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select idx('{1234234,-30,-30,234234,-30}',-30);
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select subarray('{1234234,-30,-30,234234,-30}',2,3);
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select subarray('{1234234,-30,-30,234234,-30}',-1,1);
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select subarray('{1234234,-30,-30,234234,-30}',0,-1);
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select #'{1234234,234234}'::int[];
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select '{123,623,445}'::int[] + 1245;
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select '{123,623,445}'::int[] + 445;
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select '{123,623,445}'::int[] + '{1245,87,445}';
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select '{123,623,445}'::int[] - 623;
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select '{123,623,445}'::int[] - '{1623,623}';
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select '{123,623,445}'::int[] | 623;
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select '{123,623,445}'::int[] | 1623;
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select '{123,623,445}'::int[] | '{1623,623}';
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select '{123,623,445}'::int[] & '{1623,623}';
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--test query_int
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select '1'::query_int;
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select ' 1'::query_int;
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select '1 '::query_int;
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select ' 1 '::query_int;
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select ' ! 1 '::query_int;
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select '!1'::query_int;
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select '1|2'::query_int;
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select '1|!2'::query_int;
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select '!1|2'::query_int;
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select '!1|!2'::query_int;
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select '!(!1|!2)'::query_int;
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select '!(!1|2)'::query_int;
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select '!(1|!2)'::query_int;
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select '!(1|2)'::query_int;
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select '1&2'::query_int;
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select '!1&2'::query_int;
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select '1&!2'::query_int;
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select '!1&!2'::query_int;
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select '(1&2)'::query_int;
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select '1&(2)'::query_int;
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select '!(1)&2'::query_int;
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select '!(1&2)'::query_int;
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select '1|2&3'::query_int;
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select '1|(2&3)'::query_int;
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select '(1|2)&3'::query_int;
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select '1|2&!3'::query_int;
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select '1|!2&3'::query_int;
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select '!1|2&3'::query_int;
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select '!1|(2&3)'::query_int;
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select '!(1|2)&3'::query_int;
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select '(!1|2)&3'::query_int;
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select '1|(2|(4|(5|6)))'::query_int;
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select '1|2|4|5|6'::query_int;
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select '1&(2&(4&(5&6)))'::query_int;
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select '1&2&4&5&6'::query_int;
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select '1&(2&(4&(5|6)))'::query_int;
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select '1&(2&(4&(5|!6)))'::query_int;
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CREATE TABLE test__int( a int[] );
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\copy test__int from 'data/test__int.data'
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SELECT count(*) from test__int WHERE a && '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23|50';
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SELECT count(*) from test__int WHERE a @ '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23&50';
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SELECT count(*) from test__int WHERE a @ '{20,23}';
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SELECT count(*) from test__int WHERE a @@ '50&68';
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SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
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SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
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CREATE INDEX text_idx on test__int using gist ( a gist__int_ops );
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SELECT count(*) from test__int WHERE a && '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23|50';
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SELECT count(*) from test__int WHERE a @ '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23&50';
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SELECT count(*) from test__int WHERE a @ '{20,23}';
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SELECT count(*) from test__int WHERE a @@ '50&68';
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SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
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SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
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drop index text_idx;
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CREATE INDEX text_idx on test__int using gist ( a gist__intbig_ops );
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SELECT count(*) from test__int WHERE a && '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23|50';
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SELECT count(*) from test__int WHERE a @ '{23,50}';
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SELECT count(*) from test__int WHERE a @@ '23&50';
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SELECT count(*) from test__int WHERE a @ '{20,23}';
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SELECT count(*) from test__int WHERE a @@ '50&68';
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SELECT count(*) from test__int WHERE a @ '{20,23}' or a @ '{50,68}';
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SELECT count(*) from test__int WHERE a @@ '(20&23)|(50&68)';
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