SQL Join - Limit to base table - mysql

Question

I have 4 tables that I want to link together based on the information in the sales_details table which will serve as the base table (limiting results based on the sales_details table)
1)I want to pull all columns from the sales_detail table that are mastercard orders but since the sales_detail table doesn't have a column to identity the type of transaction it is, I have to:
link the sales_detail table to the sales_total table by transaction_ID to get the pay_id
use the pay_id from the sales_total table and link to payment type table in order to filter for payment type
link product_id from sales_detail table to product_detail table to get product name
BASE TABLE : sales_detail
+-------+-----------+-----------+-----------------------------------------+
| order_date | transaction_id| product_cost | product_id | country
+-------+-----------+-----------+------------------------------------------+
| 10/1 | 12345 | 20 | 87956666 | usa
| 10/1 | 12345 | 50 | 63333333 | usa
| 10/5 | 82456 | 50 | 63333333 | usa
| 10/9 | 64789 | 30 | 45665466 | canada
| 10/12 | 08546 | 19 | 78979879 | usa
| 10/15 | 87988 | 19 | 78979879 | usa
| 10/17 | 65898 | 50 | 63333333 | canada
+-------+-----------+-----------+-------------------------------------+
table : payment_type
+-------+-----------+-----------+-------------------+
| pay_id | pay_type| payment | phone_number
+-------+-----------+-----------+-------------------+
| 08585 | 24 | mastercard |214-444-1234 |
| 07895 | 35 | visa |555-111-1234 |
| 08585 | 24 | mastercard |214-444-1234 |
| 08657 | 35 | visa |817-333-1234 |
| 02345 | 24 | mastercard |214-555-1234 |
| 02245 | 35 | visa |888-555-1234 |
| 08785 | 24 | mastercard |240-555-1234 |
| 06587 | 24 | mastercard |240-555-1234 |
+-------+-----------+-----------+-------------------+
table : sales_total
+-------+-----------+-----------+----------+
| pay_id | transaction_id| unit sold |
+-------+-----------+-----------+----------+
| 08585 | 12345 | 2 |
| 07895 | 82456 | 1 |
| 08657 | 64789 | 1 |
| 04568 | 32145 | 3 |
| 02345 | 08546 | 1 |
| 08785 | 87988 | 1 |
| 06587 | 65898 | 1 |
+-------+-----------+-----------+-----------+
table : product_detail
+-------+-----------+-----------+--+
| product_name | product id
+-------+-----------+-----------+--+
popcorn | 87956666
cheetos | 63333333
soda | 93333333
milk | 45665466
| water | 78979879
+-------+-----------+-----------+--+
**I want the output to look something like this: **
IDEAL OUTPUT
+-------+-----------+-----------+--------------------------------------------+
| order_date | transaction_id| product_cost | product_id | product |
+-------+-----------+-----------+--------------------------------------------+
| 10/1 | 12345 | 20 | 87956666 | popcorn |
| 10/1 | 12345 | 50 | 63333333 | cheetos |
| 10/12 | 08546 | 19 | 78979879 | water |
| 10/15 | 87988 | 19 | 93333333 | soda |
+-------+-----------+-----------+--------------------------------------------+
im trying to get all orders from the sales_detail table that have paid by mastercard and from the usa. I tried using left joins and not only it takes forever because of the large tables (doesnt even load) and it also gives me duplicates. What am i doing wrong?
This is the code i used but failed as it took over 20+hrs and timed out:
select t1.order_date,
t1.transaction_id,
t1.product_cost,
t1.product_id
t4.product_name
from sales_detail t1
left join sales_total t2 on t1.transaction_id=t2.transaction_id
left join payment_type t3 on t2.pay_id=t3.pay_id
left join product_detail t4 on t1.product_id=t4.product_id
where t1.order_date between '2020-10-1' and'2020-12-30'
and t1.country not in ('canada')
and t3.pay_type= 24;
there is no output for this code as after 20hrs it could never finish :(
Thanks in advance! I am a beginner so still learning the ins and outs of sql! (am using hive)

Answer 1

There is nothing seems to be wrong with your query and the reason you failed could be due to huge data present in sales table I would presume.
How ever lets give it a try by considering few points, as You only need columns from t1 and t4 , I would go for exists rather joining the tables without taking any columns to the select clause and second point , we can do a inner join between t2 and t3 considering t2 will never have a record with value null in pay_id column
select t1.order_date,t1.transaction_id,t1.product_cost,t1.product_id,t4.product_name
from sales_detail t1
left join product_detail t4 on t1.product_id = t4.product_id
where t1.order_date between '2020-10-1' and'2020-12-30'
and t1.country not in ('canada')
and exists (select 1
from sales_total t2
join payment_type t3 on t2.pay_id = t3.pay_id
where t1.transaction_id = t2.transaction_id
and t3.pay_type= 24);
If you still face performance issue try creating index on "transaction_id" and "product_id ".
I hope this help you taking a step forward. Thanks.

Answer 2

Missing comma after t1.product_id.
Use country = 'usa' as the country filter instead of not in.
Check the date range.2020-10-1 is Oct of 2020 which is in future.
select
t1.order_date,
t1.transaction_id,
t1.product_cost,
t1.product_id,
t4.product_name
from sales_detail t1
join product_detail t4 on t1.product_id=t4.product_id
join sales_total t2 on t1.transaction_id=t2.transaction_id
join payment_type t3 on t2.pay_id=t3.pay_id
where t1.order_date between ('2020-12-30' and '2020-1-10') and
t1.country = 'usa' and
t3.pay_type= 24;