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> Am Son, 2003-06-22 um 02.09 schrieb Joe Conway:

Browse Source 
>>Sounds like all that's needed for your case. But to be complete, in
>>addition to changing tablefunc.c we'd have to:
>>1) come up with a new function call signature that makes sense and does
>>not cause backward compatibility problems for other people
>>2) make needed changes to tablefunc.sql.in
>>3) adjust the README.tablefunc appropriately
>>4) adjust the regression test for new functionality
>>5) be sure we don't break any of the old cases
>>
>>If you want to submit a complete patch, it would be gratefully accepted
>>-- for review at least ;-)
>
> Here's the patch, at least for steps 1-3

Nabil Sayegh
Joe Conway
This commit is contained in:
Bruce Momjian
2003-07-27 03:51:59 +00:00
parent 9ae6905520
commit a265b7f70a
7 changed files with 309 additions and 61 deletions
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30
contrib/tablefunc/expected/tablefunc.out
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@ -197,9 +197,9 @@ ERROR: provided "categories" SQL must return 1 column of at least one row
-- connectby
--
-- test connectby with text based hierarchy
CREATE TABLE connectby_text(keyid text, parent_keyid text);
CREATE TABLE connectby_text(keyid text, parent_keyid text, pos int);
\copy connectby_text from 'data/connectby_text.data'
-- with branch
-- with branch, without orderby
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0, '~') AS t(keyid text, parent_keyid text, level int, branch text);
keyid | parent_keyid | level | branch
-------+--------------+-------+---------------------
@ -211,7 +211,7 @@ SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0, '~
row9 | row5 | 2 | row2~row5~row9
(6 rows)
-- without branch
-- without branch, without orderby
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0) AS t(keyid text, parent_keyid text, level int);
keyid | parent_keyid | level
-------+--------------+-------
@ -223,6 +223,30 @@ SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'row2', 0) AS
row9 | row5 | 2
(6 rows)
-- with branch, with orderby
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'pos', 'row2', 0, '~') AS t(keyid text, parent_keyid text, level int, branch text, pos int) ORDER BY t.pos;
keyid | parent_keyid | level | branch | pos
-------+--------------+-------+---------------------+-----
row2 | | 0 | row2 | 1
row5 | row2 | 1 | row2~row5 | 2
row9 | row5 | 2 | row2~row5~row9 | 3
row4 | row2 | 1 | row2~row4 | 4
row6 | row4 | 2 | row2~row4~row6 | 5
row8 | row6 | 3 | row2~row4~row6~row8 | 6
(6 rows)
-- without branch, with orderby
SELECT * FROM connectby('connectby_text', 'keyid', 'parent_keyid', 'pos', 'row2', 0) AS t(keyid text, parent_keyid text, level int, pos int) ORDER BY t.pos;
keyid | parent_keyid | level | pos
-------+--------------+-------+-----
row2 | | 0 | 1
row5 | row2 | 1 | 2
row9 | row5 | 2 | 3
row4 | row2 | 1 | 4
row6 | row4 | 2 | 5
row8 | row6 | 3 | 6
(6 rows)
-- test connectby with int based hierarchy
CREATE TABLE connectby_int(keyid int, parent_keyid int);
\copy connectby_int from 'data/connectby_int.data'