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Add test case for collation mismatch in recursive query

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This isn't very important by itself, but was left on my list of things
without test coverage for the collation feature.
This commit is contained in:
Peter Eisentraut 2011-03-12 10:07:23 +02:00
parent 2a26639a5d
commit 3d9f7ec1ff
2 changed files with 17 additions and 0 deletions
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10
src/test/regress/expected/collate.linux.utf8.out
View File

@ -630,6 +630,16 @@ HINT: You can override the collation by applying the COLLATE clause to one or b
CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- fail
ERROR: no collation was derived for column "b" with collatable type text
HINT: Use the COLLATE clause to set the collation explicitly.
-- collation mismatch between recursive and non-recursive term
WITH RECURSIVE foo(x) AS
(SELECT x FROM (VALUES('a' COLLATE "en_US"),('b')) t(x)
UNION ALL
SELECT (x || 'c') COLLATE "de_DE" FROM foo WHERE length(x) < 10)
SELECT * FROM foo;
ERROR: recursive query "foo" column 1 has collation "en_US" in non-recursive term but collation "de_DE" overall
LINE 2: (SELECT x FROM (VALUES('a' COLLATE "en_US"),('b')) t(x)
^
HINT: Use the COLLATE clause to set the collation of the non-recursive term.
-- casting
SELECT CAST('42' AS text COLLATE "C");
ERROR: syntax error at or near "COLLATE"

7
src/test/regress/sql/collate.linux.utf8.sql
View File

@ -190,6 +190,13 @@ SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test3 ORDER BY 2;
CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- fail
-- collation mismatch between recursive and non-recursive term
WITH RECURSIVE foo(x) AS
(SELECT x FROM (VALUES('a' COLLATE "en_US"),('b')) t(x)
UNION ALL
SELECT (x || 'c') COLLATE "de_DE" FROM foo WHERE length(x) < 10)
SELECT * FROM foo;
-- casting