Re: Bug in either collation docs or code

>
> I did my test on 9.6.5 ​(Ubuntu 16.04) with:
>
> CREATE TABLE test_col (
> a text COLLATE "en_CA.utf8",
> b text COLLATE "en_US.utf8"
> );
> INSERT INTO test_col VALUES ('A', 'A');
> SELECT a < (SELECT 'foo'::text COLLATE "en_GB.utf8") FROM test_col;
>
> SQL Error: ERROR: could not determine which collation to use for string
> comparison
> HINT: Use the COLLATE clause to set the collation explicitly.
>
> Note, I had to include the cast to text in order for the query to
> execute...
>
> David J.
>
>
On postgres built off of master on my mac (sierra), the following is the
output:

DROP TABLE IF EXISTS test_col_mac;
DROP TABLE
CREATE TABLE test_col_mac (
a text COLLATE "de_DE",
b text COLLATE "es_ES"
);
CREATE TABLE
INSERT INTO test_col_mac VALUES('A','A');
INSERT 0 1
SELECT a < (SELECT 'foo'::TEXT COLLATE "fr_FR") FROM test_col_mac;
?column?
----------
t
(1 row)

--
Melanie Plageman