PHP comparison operator not working in MySQL streak query - php

Question

In attempting to calculate the longest goalscoring streak for a single player, I've hit a stumbling block with the >= PHP operator not performing as intended.
The data is presented in a table as follows:
date gls
------------------------
1980-08-16 2
1980-08-19 1
1980-08-23 1
1980-08-26 0
1980-08-30 1
1980-09-06 2
1980-09-13 0
... and so on
The PHP query I am using is as follows:
SELECT gls, MIN(date) as StartDate, MAX(date) as EndDate, COUNT(*) as Games
FROM (SELECT gls, date,
(SELECT COUNT(*)
FROM goalsengine G
WHERE G.gls <> GE.gls
AND G.date <= GE.date) as RunGroup
FROM goalsengine GE) A
WHERE gls>='1'
GROUP BY gls, RunGroup
ORDER BY Games
I formed the query this way in the belief that >= would tally up streaks where this player had scored one or more goals in a game. From the table above, the first three entries would represent a scoring run of three games, for example.
Instead, the query is returning streaks but only where a certain number of goals are scored i.e. despite scoring in the first three games, the first entry (where two goals were scored, not one) is ignored when the streak is returned.
To return the results, I am using the following:
while($row=mysql_fetch_assoc($result))
{
{$startrundate = date("d F Y",strtotime($row['StartDate']));}
{$endrundate = date("d F Y",strtotime($row['EndDate']));}
echo "<tr>";
echo "<td>".$row['Games']."</td>";
echo "<td class='tableprofile' style='text-align:right;'>".$startrundate." - ".$endrundate."</td>";
echo "</tr>";
$rowCount += 1;
}
By comparison, WHERE gls='0' is giving me the desired non-goalscoring streaks. I feel I have perhaps overlooked something straightforward but cannot see what.

Answer 1

I've managed to work out a solution to this particular issue and it works as far as I can tell, having counted some of the raw data out manually.
SELECT gls, MIN(date) as StartDate, MAX(date) as EndDate, COUNT(*) as Games
FROM (SELECT gls, date,
(SELECT COUNT(*)
FROM goalsengine G
WHERE IF(G.gls IN ('1','2','3','4','5'),1,0) <> IF(GE.gls IN ('1','2','3','4','5'),1,0)
AND G.date <= GE.date) as RunGroup
FROM goalsengine GE) A
WHERE gls IN ('1','2','3','4','5') GROUP BY IF(bg IN ('1','2','3','4','5'),1,0), RunGroup ORDER BY Games DESC LIMIT 3");
I admit it's not exactly pretty, but it's doing the job for now. I have gone to 5 in the calculation as that's the maximum number of goals scored in a single match with regards to this data set.