Get only the code and total number Oracle SQL

Question

I have 2 tables below.I want to join them

Table1
--------------
T1_id | desc
--------------
1     | test 1
2     | test 2

table2 (detail)
---------------
T2_id  | Price
----------------
1      | 100000
1      | 0
1      | 0
2      | 300000
2      | 0
2      | 0
2      | 0

i want the results for this

--------------
code  | total
--------------
1     | 100000
2     | 300000

this query

select a.T1_id as Code,
b.price as Total
from Table1 a
inner join table2 b on b.T2_id = a.T1_id group by a.T1_id,b.price;

Answer 1

Use below query instead to get the total price

select a.T1_id as Code,
SUM(b.price) as Total
from Table1 a
inner join table2 b on b.T2_id = a.T1_id group by a.T1_id;

Sample output:

Answer 2

Referring to the sample

To exclude 0 values:

SELECT T1_ID AS CODE, PRICE AS PRICE FROM TABLE1 JOIN TABLE2 ON T1_ID=T2_ID
WHERE PRICE<>0

sum of same id:

SELECT T1_ID AS CODE, SUM(PRICE) AS PRICE FROM TABLE1 JOIN TABLE2 ON T1_ID=T2_ID
GROUP BY T1_ID

Answer 3

I fail to see where Table 1 comes into play at all. Presumably the t2_id is a FK back to t1_id. You aren't presenting the column DESC at all, so why are you bothering to join on table_1?

So what's wrong with simply

select t2_id CODE,
       sum(price) TOTAL
from table2
group by t2_id
order by t2_id
;