How to change the mysql query to retrieve data (pivot view) - mysql

Question

I have a dataset as follows,
I need to get the average xdr_count of each table_name for 7 past days..So I tried as below.
SELECT
t1.table_date,
t1.table_name,
t1.xdr_count,
t2.AVG_XDR,
t2.Threshold
FROM stat t1
INNER JOIN
(
SELECT table_name, AVG(xdr_count) AS AVG_XDR,AVG(xdr_count)*.8 as Threshold
FROM stat
where table_date >= DATE(NOW() - INTERVAL 7 DAY)
GROUP BY table_name
) t2
ON t2.table_name = t1.table_name
where table_date >= DATE(NOW() - INTERVAL 7 DAY);
This works fine and I could get the output as below.
But I need to rearrange this table to a pivot view(hope this can called as pivot view) such as below.
I need to mention the table name,Avg(XDR) and dates with appropraite xdr_count values.
Can someone help me to change the view of output result..
Note: Threshold value will be use later.

Answer 1

I'm not entirely sure how you want to calculate the avg_xdr columns. But, you can try something like this.
SELECT table_name,
MAX(CASE WHEN table_date = '2022-08-21' then avg_xdr else 0 END) AS avg_xdr,
MAX(CASE WHEN table_date = '2022-08-21' then xdr_count else 0 END) AS '2022-08-21',
MAX(CASE WHEN table_date = '2022-08-22' then xdr_count else 0 END) AS '2022-08-22',
MAX(CASE WHEN table_date = '2022-08-23' then xdr_count else 0 END) AS '2022-08-23',
MAX(CASE WHEN table_date = '2022-08-24' then xdr_count else 0 END) AS '2022-08-24'
FROM tableA
Group by table_name
db fiddle