One stored procedure calls another - however getting a table error - mysql

Question

I am trying to call one stored procedure withing another - using an if statement.
I am getting an error so I believe that I have something out of sequence
CREATE PROCEDURE reportFreeCoolingTrackerCalls (
IN fromDate varchar (50),
IN toDate varchar (50),
IN timeZone varchar (50))
BEGIN
DECLARE startDate varchar (50);
DECLARE endDate varchar (50);
DECLARE mylogID Int;
SET startDate = FROM_UNIXTIME(fromDate/1000);
SET endDate = FROM_UNIXTIME(toDate/1000);
IF (l1.activityId = t2.activityId)
THEN CALL reportFreeCoolingTrackerError (
fromDate,
toDate,
timeZone );
ELSEIF (l1.activityId != t2.activityId)
THEN CALL reportFreeCoolingTracker (
fromDate,
toDate,
timeZone );
END IF;
SELECT l1.activityId,t2.activityId
FROM logs l
INNER JOIN groups g ON g.groupId = l.groupId
LEFT JOIN groups g1 ON g.parentId = g1.groupId
LEFT JOIN groups g2 ON g1.parentId = g2.groupId
LEFT JOIN groups g3 ON g2.parentId = g3.groupId
INNER JOIN activities a ON l.logId = a.logId
INNER JOIN log1644 l1 ON a.activityId = l1.activityId
INNER JOIN log1644 t2 ON t2.recordId = l1.recordid + 1
INNER JOIN items i ON l.logId = i.logId AND i.name LIKE '%KW%'
INNER JOIN users u ON l1.userId = u.userId AND i.name LIKE '%KW%'
WHERE i.itemID = "31985" AND l1.activityId = 1257
AND l1.started
BETWEEN startDate
AND endDate
ORDER BY l1.recordId,l1.started;
END //
DELIMITER ;
ERROR
Unknown table 'l1' in field list

Answer 1

I think this code is causing the trouble for you:
IF (l1.activityId = t2.activityId) --Here l1 and t2 are not known
THEN CALL reportFreeCoolingTrackerError (
fromDate,
toDate,
timeZone );
ELSEIF (l1.activityId != t2.activityId) --Here l1 and t2 are not known
THEN CALL reportFreeCoolingTracker (
fromDate,
toDate,
timeZone );
END IF;
as in this line l1 is not known. Similarly t2 is also not known

Answer 2

Table aliases (such as INNER JOIN log1644 l1 ON... are only visible in the statement (in your case a SELECT) that contains them.
You'll need to refer to the full table name outside of that select.
As for the logic.... you'll need to populate the values you need in the SP call by using a select, and populating them into variables. Alternatively, use a select subquery in the call itself, but that would be a maintenance headache!