Strange Result with char concatenation in query.

Hello,

A short example, is IMHO more explicit :

% cat file.csv
1,100/100
2,100/100
3,200/200

Creation :
CREATE TABLE test(
numtst INT,
chartst VARCHAR(8)
);

\c - postgres
COPY test FROM '/home/ou/file.csv' USING DELIMITERS ',' WITH NULL AS '';

\c - ou
SELECT '+'||numtst||'+' AS "numtst", '*'||chartst||'*' AS "chartst" FROM test;

Result :

test_db=> SELECT '+'||numtst||'+' AS "numtst", '*'||chartst||'-' AS "chartst" FROM test;
numtst | chartst
--------+------------
-+2+ | *100/100
-+4+ | *100/100
-+5+ | *200/200
(3 rows)

As you see the last '-' in the second column is appended to the first column.

Any help would be kindy.

Mathieu,

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