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Support assignment to subfields of composite columns in UPDATE and INSERT.

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As a side effect, cause subscripts in INSERT targetlists to do something
more or less sensible; previously we evaluated such subscripts and then
effectively ignored them.  Another side effect is that UPDATE-ing an
element or slice of an array value that is NULL now produces a non-null
result, namely an array containing just the assigned-to positions.
This commit is contained in:
Tom Lane
2004-06-09 19:08:20 +00:00
parent 3a0df651da
commit 7e64dbc6b5
27 changed files with 1468 additions and 574 deletions
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9
src/test/regress/sql/arrays.sql
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@ -13,11 +13,10 @@ CREATE TABLE arrtest (
);
--
-- only this array as a 0-based 'e', the others are 1-based.
-- 'e' is also a large object.
-- only the 'e' array is 0-based, the others are 1-based.
--
INSERT INTO arrtest (a[5], b[2][1][2], c, d, f, g)
INSERT INTO arrtest (a[1:5], b[1:1][1:2][1:2], c, d, f, g)
VALUES ('{1,2,3,4,5}', '{{{0,0},{1,2}}}', '{}', '{}', '{}', '{}');
UPDATE arrtest SET e[0] = '1.1';
@ -27,12 +26,12 @@ UPDATE arrtest SET e[1] = '2.2';
INSERT INTO arrtest (f)
VALUES ('{"too long"}');
INSERT INTO arrtest (a, b[2][2][1], c, d, e, f, g)
INSERT INTO arrtest (a, b[1:2][1:2], c, d, e, f, g)
VALUES ('{11,12,23}', '{{3,4},{4,5}}', '{"foobar"}',
'{{"elt1", "elt2"}}', '{"3.4", "6.7"}',
'{"abc","abcde"}', '{"abc","abcde"}');
INSERT INTO arrtest (a, b[1][2][2], c, d[2][1])
INSERT INTO arrtest (a, b[1:2], c, d[1:2])
VALUES ('{}', '{3,4}', '{foo,bar}', '{bar,foo}');