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Fix subpath and subltree. Allow to return '' value.

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subpath(ltree,0,0) returns ''.
This commit is contained in:
Teodor Sigaev
2003-07-18 13:27:43 +00:00
parent fd4c775481
commit 2c914937c1
2 changed files with 9 additions and 8 deletions
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12
contrib/ltree/expected/ltree.out
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@ -74,15 +74,15 @@ SELECT subpath('Top.Child1.Child2',0,-1);
(1 row)
SELECT subpath('Top.Child1.Child2',0,0);
subpath
-------------------
Top.Child1.Child2
subpath
---------
(1 row)
SELECT subpath('Top.Child1.Child2',1,0);
subpath
---------------
Child1.Child2
subpath
---------
(1 row)
SELECT subpath('Top.Child1.Child2',0);