Hi,
I'm using postgresql 7.3.4 on debian. I get bad results
from a two-table left outer join.
First table: select * from descriptions;
desc_id | description ---------+------------- 909097 | cap 107890 | resis 223940 | ic 447652 | electro
(4rows)
Second table: select * from parts;
part_id | desc_id | mounting | man_id ---------+---------+----------+-------- 2 | 107890 | SMD |
7 1 | 909097 | LEADED | 1 3 | 223940 | LEADED | 8 (3 rows)
Join:
SELECT parts.*, d.description, d.desc_id FROM parts p LEFT OUTER JOIN
descriptions d ON p.desc_id=d.desc_id;
NOTICE: Adding missing FROM-clause entry for table "parts"
part_id | desc_id | mounting | man_id | description | desc_id
---------+---------+----------+--------+-------------+--------- 2 | 107890 | SMD | 7 | resis |
107890 1 | 909097 | LEADED | 1 | resis | 107890 3 | 223940 | LEADED | 8 | resis
| 107890 2 | 107890 | SMD | 7 | ic | 223940 1 | 909097 | LEADED | 1 |
ic | 223940 3 | 223940 | LEADED | 8 | ic | 223940 2 | 107890 | SMD |
7 | cap | 909097 1 | 909097 | LEADED | 1 | cap | 909097 3 | 223940 |
LEADED | 8 | cap | 909097 (9 rows) /\ /\
|| || p.desc_id
d.desc_id
I don't see why there are rows with p.desc_id and d.desc_id different.
(I learnt sql last week)
