Need Help on SQL Query - incorporating AVG - sql-server

Question

[Edit from #marcus-vinicius-pompeu: I rewrote the query for better identation. To bypass 'mostly code' constraint, I changed the original group by logic]
I am totally stuck while writing a query. Required output is attached. Query I have written is as below. it is working fine till column SL_30_Sec. How to add two columns ASA & AHT based on average values of each date
SELECT
Date(t.call_date) as created_date,
--
Sum(CASE WHEN t.table_name = 'one' THEN 1 ELSE 0 END) AS Offered_Calls,
Sum(CASE WHEN t.table_name = 'two' THEN 1 ELSE 0 END) AS Answered_Calls,
--
Concat(
Round(
(
Sum(CASE WHEN t.table_name = 'two' THEN 1 ELSE 0 END) /
Sum(CASE WHEN t.table_name = 'one' THEN 1 ELSE 0 END) * 100
), 2
), '%'
) AS Success_Rate,
--
Sum(CASE WHEN t.table_name = 'three' THEN 1 ELSE 0 END) AS OB_Calls,
Sum(CASE WHEN t.table_name = 'four' THEN 1 ELSE 0 END) AS OB_Calls_Received,
Sum(CASE WHEN t.table_name = 'five' THEN 1 ELSE 0 END) AS Calls_ANS_in_30_Sec,
--
Concat(
Round(
(
Sum(CASE WHEN t.table_name = 'five' THEN 1 ELSE 0 END) /
Sum(CASE WHEN t.table_name = 'one' THEN 1 ELSE 0 END) * 100
), 2
), '%'
) AS SL_30_Sec
FROM
(
SELECT call_date, 'one' AS table_name FROM table_1
WHERE call_date BETWEEN '2020-01-01' AND '2020-01-31 23:59' AND campaign_id = 'abc_inbound'
-- -----
UNION ALL
-- -----
SELECT call_date, 'two' AS table_name FROM table_1
WHERE call_date BETWEEN '2020-01-01' AND '2020-01-31 23:59' AND campaign_id = 'abc_inbound' AND term_reason IN('agent', 'caller')
-- -----
UNION ALL
-- -----
SELECT call_date, 'three' AS table_name FROM table_2
WHERE call_date BETWEEN '2020-01-01' AND '2020-01-31 23:59' AND campaign_id = 'xyz'
-- -----
UNION ALL
-- -----
SELECT call_date, 'four' AS table_name FROM table_2
WHERE call_date BETWEEN '2020-01-01' AND '2020-01-31 23:59' AND campaign_id = 'xyz' AND term_reason IN('agent', 'caller')
-- -----
UNION ALL
-- -----
SELECT call_date, 'five' AS table_name FROM table_1
WHERE call_date BETWEEN '2020-01-01' AND '2020-01-31 23:59' AND campaign_id = 'abc_inbound' AND term_reason IN('agent', 'caller', 'ABANDON') AND queue_seconds <= 30
) t
GROUP BY Date(t.call_date)
Required Output

Answer 1

You cannot, given the dataset...
Table_1 = date of offered calls
Table_2 = date of answered calls
Table_3 = date of outbound calls
Table_4 = date of offered outbound calls
Table_5 = date of answered outbound calls in less than 30 seconds
To compute:
ASA - you have to have the time of answer time (you should have, since the data allows for filtering those answered in 30 seconds or below)
AHT - you have to have answer time and talk & wrap time
For not outbound calls it seems we already have answer time from table_1.queue_seconds...
Links for definitions:
https://www.genroe.com/resources/glossary/call-centre-definitions-and-glossary
https://www.callcentrehelper.com/how-to-measure-average-handling-time-52403.htm

Answer 2

You can try this.
SELECT ((SUM(ASA) +SUM(AHT))/count(*))
FROM tableName
GROUP BY date