How to write an outer join

Question

Hi,
Let's suppose I have to write an outer join like this:
select ...
from table_1 a, table_2 b
where a.field1 = b.field1
and a.field2 >= b.field2
but I know that for some values there might not to be a matching between the two tables.
Should I rewtire a query as follows?
select ...
from table_1 a, table_2 b
where a.field1 *(+) =* b.field1
and a.field2 *(+) >=* b.field2
I mean, should I put the (+) in both of matches?
Thanks!

Answer 1

Please consider the following when you post a question.
1. New features keep coming in every oracle version so please provide your Oracle DB Version to get the best possible answer.
You can use the following query and do a copy past of the output.
select * from v$version 2. We dont know your DB structure or How your Data is. So you need to let us know. The best way would be to give some sample data like this.
I have the following table called sales
with sales
as
      select 1 sales_id, 1 prod_id, 1001 inv_num, 120 qty from dual
      union all
      select 2 sales_id, 1 prod_id, 1002 inv_num, 25 qty from dual
select *
  from sales 3. Rather than telling what you want in words its more easier when you give your expected output.
For example in the above sales table, I want to know the total quantity and number of invoice for each product.
The output should look like this
Prod_id   sum_qty   count_inv
1         145       2 4. When ever you get an error message post the entire error message. With the Error Number, The message and the Line number.
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