I have table userMessage
with rows id
, userID
, text
and date
(timestamp). I want to get statistics on the number of messages for each day. how to write such a sample?
This SQL will work in MySql
SELECT
CAST(`date` AS DATE) AS MessageDate,
COUNT(*) AS TotalMessages,
COUNT(DISTINCT userID) AS TotalUniqueUsers
FROM userMessage
GROUP BY MessageDate
ORDER BY MessageDate DESC
You can test it on db<>fiddle here
(Btw, it might be better to use column names that don't look like reserved words.
Fe instead of date
use a name like msgTimestamp
)
I don't know what the database is, but in SQLite, I have try to run this, it is OK:
select strftime('%Y-%m-%d',yourDateColumnName) as DATE_BY_DAY,count(*)
from userMessage
group by DATE_BY_DAY;
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