Combining two counts with joins in one query - sql

Question

Ok - hoping someone can help as I'm struggling here. Have tried using sum(case when), count(*), subqueries with no success.
Essentially I have two queries I am trying to combine into one, grouped by the same parameter. The queries:
Query 1:
SELECT
u.username,
count(*) as 'Total'
FROM log1 L1
JOIN users u on u.userref = L1.userref
WHERE L1.date between #FromDate and #ToDate
GROUP BY u.username
ORDER BY u.username
Query 2:
SELECT
u.username,
count(*) as 'Total'
FROM log2 L2
LEFT JOIN users u on u.userref = L2.userref
WHERE L2.date between #FromDate and #ToDate and L2.message like '%None%'
GROUP BY u.username
ORDER BY u.username
What I would like is a single query with a username column (u.username), a column showing the results of query 1, and a column showing the results of query two. Any help appreciated!

Answer 1

You can put a case statement inside the count function to only count when certain criteria is met:
SELECT u.username,
Total = COUNT(*),
Total2 = COUNT(CASE WHEN L.message LIKE '%None%' THEN 1 END)
FROM log1 AS L
JOIN users AS u
ON u.userref = L.userref
WHERE L.date BETWEEN #FromDate and #ToDate
GROUP BY u.username
ORDER BY u.username;
Of note:
BETWEEN can cause problems, especially when working with dates
Using string literals for column aliases is on the deprecation list
EDIT
Completely missed that you had two separate log tables:
SELECT u.username,
Total = COUNT(Count1),
Total2 = COUNT(Count2)
FROM ( SELECT l.UserRef, Count1 = 1, Count2 = NULL
FROM log1 AS L
WHERE L.date BETWEEN #FromDate and #ToDate
UNION ALL
SELECT l.UserRef, Count1 = NULL, Count2 = 1
FROM log2 AS L
WHERE L.date BETWEEN #FromDate and #ToDate
AND L.message LIKE '%None%'
) AS l
JOIN users AS u
ON u.userref = L.userref
GROUP BY u.username
ORDER BY u.username;

Answer 2

SELECT X.USERNAME,X.TOTAL,Y.TOTAL
FROM(SELECT
u.username,
count(*) as 'Total'
FROM log1 L1
JOIN users u on u.userref = L1.userref
WHERE L1.date between #FromDate and #ToDate
GROUP BY u.username
) as x
INNER JOIN
(
SELECT
u.username,
count(*) as 'Total'
FROM log2 L2
LEFT JOIN users u on u.userref = L2.userref
WHERE L2.date between #FromDate and #ToDate and L2.message like '%None%'
GROUP BY u.username
) AS Y ON Y.USERNAME = X.USERNAME