Question

I have a column inside my table: tbl_customers that distinguishes a customer record as either a LEAD or a CUS.

The column is simply: recordtype, with is a char(1). I populate it with either C, or L.
Obviously C = customer, while L = lead.

I want to run a query that groups by the day the record was created, so I have a column called: datecreated.

Here’s where I get confused with the grouping.

I want to display a result (in one query) the COUNT of customers and the COUNT of leads for a particular day, or date range. I’m successful with only pulling the number for either recordtype:C or recordtype:L , but that takes 2 queries.

Here’s what I have so far:

  SELECT COUNT(customerid) AS `count`, datecreated 
    FROM `tbl_customers` 
   WHERE `datecreated` BETWEEN '$startdate."' AND '".$enddate."' 
     AND `recordtype` = 'C' 
GROUP BY `datecreated` ASC

As expected, this displays 2 columns (the count of customer records and the datecreated).

Is there a way to display both in one query, while still grouping by the datecreated column?

Answer 1

SELECT COUNT(customerid) AS `count`,
    datecreated,
    SUM(`recordtype` = 'C') AS CountOfC,
    SUM(`recordtype` = 'L') AS CountOfL
FROM `tbl_customers` 
WHERE `datecreated` BETWEEN '$startdate."' AND '".$enddate."' 
GROUP BY `datecreated` ASC

See Is it possible to count two columns in the same query