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Support expressions of the form 'scalar op ANY (array)' and

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'scalar op ALL (array)', where the operator is applied between the
lefthand scalar and each element of the array.  The operator must
yield boolean; the result of the construct is the OR or AND of the
per-element results, respectively.

Original coding by Joe Conway, after an idea of Peter's.  Rewritten
by Tom to keep the implementation strictly separate from subqueries.
This commit is contained in:
Tom Lane
2003-06-29 00:33:44 +00:00
parent df7618020b
commit bee217924d
28 changed files with 875 additions and 157 deletions
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62
src/test/regress/expected/arrays.out
View File

@@ -294,6 +294,68 @@ SELECT CAST(ARRAY[[[[[['a','bb','ccc']]]]]] as text[]) as "{{{{{{a,bb,ccc}}}}}}"
{{{{{{a,bb,ccc}}}}}}
(1 row)
-- scalar op any/all (array)
select 33 = any ('{1,2,3}');
?column?
----------
f
(1 row)
select 33 = any ('{1,2,33}');
?column?
----------
t
(1 row)
select 33 = all ('{1,2,33}');
?column?
----------
f
(1 row)
select 33 >= all ('{1,2,33}');
?column?
----------
t
(1 row)
-- boundary cases
select null::int >= all ('{1,2,33}');
?column?
----------
(1 row)
select null::int >= all ('{}');
?column?
----------
t
(1 row)
select null::int >= any ('{}');
?column?
----------
f
(1 row)
-- cross-datatype
select 33.4 = any (array[1,2,3]);
?column?
----------
f
(1 row)
select 33.4 > all (array[1,2,3]);
?column?
----------
t
(1 row)
-- errors
select 33 * any ('{1,2,3}');
ERROR: op ANY/ALL (array) requires operator to yield boolean
select 33 * any (44);
ERROR: op ANY/ALL (array) requires array on right side
-- test indexes on arrays
create temp table arr_tbl (f1 int[] unique);
NOTICE: CREATE TABLE / UNIQUE will create implicit index 'arr_tbl_f1_key' for table 'arr_tbl'

16
src/test/regress/sql/arrays.sql
View File

@@ -154,6 +154,22 @@ SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] AS "{{a,bc},{def,hijk
SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] is of (varchar[]) as "TRUE";
SELECT CAST(ARRAY[[[[[['a','bb','ccc']]]]]] as text[]) as "{{{{{{a,bb,ccc}}}}}}";
-- scalar op any/all (array)
select 33 = any ('{1,2,3}');
select 33 = any ('{1,2,33}');
select 33 = all ('{1,2,33}');
select 33 >= all ('{1,2,33}');
-- boundary cases
select null::int >= all ('{1,2,33}');
select null::int >= all ('{}');
select null::int >= any ('{}');
-- cross-datatype
select 33.4 = any (array[1,2,3]);
select 33.4 > all (array[1,2,3]);
-- errors
select 33 * any ('{1,2,3}');
select 33 * any (44);
-- test indexes on arrays
create temp table arr_tbl (f1 int[] unique);
insert into arr_tbl values ('{1,2,3}');