Hello,
Can anyone help me with the problem bellow ?
I want to have all the row in table "table_main" with the value in the table
"table_slave" (value or null if not exist)
It is possible to have the same result without sub-select in OUTER JOIN
(speed problem on big table) ?
Actualy this is what I make...
CREATE TABLE "table_main" ( "id" int4, "some_field" varchar(100)
);
CREATE TABLE "table_slave" ( "id" int4, "name" varchar(100), "c1" varchar(30)
);
SELECT TM.some_field, TS.name
FROM table_main TM
LEFT OUTER JOIN (SELECT name FROM table_slave WHERE c1 = 'myvalue') TS
USING(id)
the request bellow is not correct:
SELECT TM.some_filed, TS.name
FROM table_main TM
LEFT OUTER JOIN table_slave TS USING(id)
WHERE (TS.c1 = 'myc1' OR TS.c1 IS NULL)
Many thanks,
Nicolas
