Result set order changing in php - php

Question

I have a result set and need to be displayed as it is on the screen.But the problem is while displaying each row of the result set using echo command the order is getting changed.Can anyone say why this is happening and provide me a way to overcome it.Here are my actual and printed outputs.
Actual Result set:
JAIKE-ILENE-WACKI-MAZIE-REGLE-SBJ-KMMU
LVZ-HARTY-MUGZY-STW
MAZIE-SIXIE-SBJ-KMMU
PXT-LOUIE-GATBY-RAZER-BUZIE-JAIKE-ILENE-WACKI-MAZIE
SWANN-GATBY-RAZER-BUZIE-JAIKE-ILENE-WACKI-MAZIE
Output:
JAIKE-SBJ-ILENE-KMMU-WACKI-MAZIE-REGLE
MUGZY-STW-LVZ-HARTY
SBJ-KMMU-MAZIE-SIXIE
ILENE-GATBY-WACKI-RAZER-MAZIE-BUZIE-PXT-JAIKE-LOUIE
WACKI-RAZER-MAZIE-BUZIE-JAIKE-SWANN-ILENE-GATBY
Here is my code
$sql3="SELECT GROUP_CONCAT(l.fix_ident SEPARATOR '-') AS fix_seq,l.airport_ident,x.star_ident,x.transition_ident,
x.fix_ident from corept.std_star_leg l
JOIN
(SELECT DISTINCT c.airport_ident,c.star_ident,c.transition_ident,c.fix_ident
FROM corept.std_star_leg c
INNER JOIN
(SELECT star_ident,transition_ident,max(sequence_num) seq,route_type
FROM corept.std_star_leg
WHERE data_supplier='J'
AND airport_ident='KMMU'
GROUP BY star_ident,
transition_ident)b ON c.sequence_num=b.seq
AND c.star_ident=b.star_ident AND c.transition_ident=b.transition_ident
LEFT JOIN
(SELECT name,trans
FROM skyplan_deploy.deploy_stars
WHERE apt='KMMU'
AND name!=trans) d
ON d.name=c.star_ident
AND d.trans=c.fix_ident
WHERE c.data_supplier='J'
AND c.airport_ident='KMMU' AND d.name is null)x
where l.airport_ident='KMMU' and l.transition_ident=x.transition_ident
and l.star_ident=x.star_ident and l.data_supplier='J'
group by x.star_ident,x.transition_ident
order by l.star_ident,x.transition_ident,l.sequence_num";
$res3=mysqli_query($mysqli,$sql3);
if($res3)
{
while($newArray3=mysqli_fetch_array($res3,MYSQLI_ASSOC))
{
$apt=$newArray3['airport_ident'];
$star_ident=$newArray3['star_ident'];
$trans_ident=$newArray3['transition_ident'];
$fix_ident=$newArray3['fix_ident'];
$fix_seq=$newArray3['fix_seq'];
echo $apt.",".$star_ident.",".$trans_ident.",".$fix_ident.",COREPT,".$fix_seq;
echo "<br>";
}
}
else
{
printf("ERROR:%s\n",mysqli_error($mysqli));
}

Answer 1

Your query looks overly complex. It appears to be finding the groupwise maximum std_star_leg records by sequence_num (grouped on start_ident and transition_ident), excluding those for which there is already a matching non-self-referencing deploy_star, then returning the results grouped again with all matching fix_ident values concatenated into a string?
If so, the following greatly simplified query ought to achieve the same outcome:
SELECT GROUP_CONCAT(fix_ident SEPARATOR '-') AS fix_seq,
airport_ident,
star_ident,
transition_ident
FROM corept.std_star_leg l NATURAL JOIN (
SELECT star_ident, transition_ident,
data_supplier, airport_ident,
MAX(sequence_num) sequence_num
FROM corept.std_star_leg
WHERE data_supplier = 'J'
AND airport_ident = 'KMMU'
GROUP BY star_ident, transition_ident
) b
WHERE NOT EXISTS (
SELECT NULL
FROM skyplan_deploy.deploy_stars d
WHERE d.name != d.trans
AND d.name = l.star_ident
AND d.trans = l.fix_ident
AND d.apt = l.airport_ident
)
GROUP BY star_ident, transition_ident
Note that whereas you were previously selecting x.fix_ident in the outermost select list, I have omitted such column because its value would be indeterminately selected by the server from amongst those in the fix_seq.
Now, as to your problem (which appears to be related to the order in which fix_ident values appear within the GROUP_CONCAT() string fix_seq—although it's terribly hard to appreciate that from your question), perhaps you want to use the ORDER BY parameter to the GROUP_CONCAT() function? For example:
SELECT GROUP_CONCAT(fix_ident SEPARATOR '-' ORDER BY ...) AS fix_seq
However, it is not clear to me what ordering you require (the only ORDER BY clause in your original query was entirely redundant).