Weird result using group by
I help run a small radio station and we log stats in to a MySQL database.
I have started seeing weird results when using the following code to grab peaks for each entry logged in the stats table.
I have tried a few things in the code but not seen any change in results so far.
SELECT *
FROM
(
SELECT
stat_utc,
stat_master_count,
stat_master_track
FROM
stats_all_master
ORDER BY
stat_master_count DESC,
stat_utc DESC
) AS my_table_tmp
GROUP BY
stat_master_track
ORDER BY
stat_master_count DESC,
stat_utc DESC
LIMIT 5;
If I remove the GROUP BY stat_master_track I see results with higher stat_count.
With GROUP BY:
41 LIVE SHOW ~ Erebuss - Mixset Showcase Mix 2018 (29/12/18)
41 Mixset ~ Inna Rhythm Recordings - Mix 01 (2015)
39 LIVE SHOW ~ DJ Ransome - Mixset Showcase 2017
38 LIVE SHOW ~ Parts Unknown - PartsUnknown #007
37 LIVE SHOW ~ MrKrotos - Mixset Showcase 2018 Part 2 (2018-12-29)
Without GROUP BY I see records with higher count like:
51 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
47 LIVE SHOW ~ Erebuss - Renegade sessions #0006 (UK)
46 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
sorting group-by
asked Dec 31 '18 at 16:53
AndyAndy
257
|
show 1 more comment
I help run a small radio station and we log stats in to a MySQL database.
I have started seeing weird results when using the following code to grab peaks for each entry logged in the stats table.
I have tried a few things in the code but not seen any change in results so far.
SELECT *
FROM
(
SELECT
stat_utc,
stat_master_count,
stat_master_track
FROM
stats_all_master
ORDER BY
stat_master_count DESC,
stat_utc DESC
) AS my_table_tmp
GROUP BY
stat_master_track
ORDER BY
stat_master_count DESC,
stat_utc DESC
LIMIT 5;
If I remove the GROUP BY stat_master_track I see results with higher stat_count.
With GROUP BY:
41 LIVE SHOW ~ Erebuss - Mixset Showcase Mix 2018 (29/12/18)
41 Mixset ~ Inna Rhythm Recordings - Mix 01 (2015)
39 LIVE SHOW ~ DJ Ransome - Mixset Showcase 2017
38 LIVE SHOW ~ Parts Unknown - PartsUnknown #007
37 LIVE SHOW ~ MrKrotos - Mixset Showcase 2018 Part 2 (2018-12-29)
Without GROUP BY I see records with higher count like:
51 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
47 LIVE SHOW ~ Erebuss - Renegade sessions #0006 (UK)
46 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
sorting group-by
asked Dec 31 '18 at 16:53
AndyAndy
257
Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within thestat_master_trackcolumn?
– redreddington
Dec 31 '18 at 17:16
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18
|
show 1 more comment
I help run a small radio station and we log stats in to a MySQL database.
I have started seeing weird results when using the following code to grab peaks for each entry logged in the stats table.
I have tried a few things in the code but not seen any change in results so far.
SELECT *
FROM
(
SELECT
stat_utc,
stat_master_count,
stat_master_track
FROM
stats_all_master
ORDER BY
stat_master_count DESC,
stat_utc DESC
) AS my_table_tmp
GROUP BY
stat_master_track
ORDER BY
stat_master_count DESC,
stat_utc DESC
LIMIT 5;
If I remove the GROUP BY stat_master_track I see results with higher stat_count.
With GROUP BY:
41 LIVE SHOW ~ Erebuss - Mixset Showcase Mix 2018 (29/12/18)
41 Mixset ~ Inna Rhythm Recordings - Mix 01 (2015)
39 LIVE SHOW ~ DJ Ransome - Mixset Showcase 2017
38 LIVE SHOW ~ Parts Unknown - PartsUnknown #007
37 LIVE SHOW ~ MrKrotos - Mixset Showcase 2018 Part 2 (2018-12-29)
Without GROUP BY I see records with higher count like:
51 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
47 LIVE SHOW ~ Erebuss - Renegade sessions #0006 (UK)
46 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
sorting group-by
asked Dec 31 '18 at 16:53
AndyAndy
257
I help run a small radio station and we log stats in to a MySQL database.
I have started seeing weird results when using the following code to grab peaks for each entry logged in the stats table.
I have tried a few things in the code but not seen any change in results so far.
SELECT *
FROM
(
SELECT
stat_utc,
stat_master_count,
stat_master_track
FROM
stats_all_master
ORDER BY
stat_master_count DESC,
stat_utc DESC
) AS my_table_tmp
GROUP BY
stat_master_track
ORDER BY
stat_master_count DESC,
stat_utc DESC
LIMIT 5;
If I remove the GROUP BY stat_master_track I see results with higher stat_count.
With GROUP BY:
41 LIVE SHOW ~ Erebuss - Mixset Showcase Mix 2018 (29/12/18)
41 Mixset ~ Inna Rhythm Recordings - Mix 01 (2015)
39 LIVE SHOW ~ DJ Ransome - Mixset Showcase 2017
38 LIVE SHOW ~ Parts Unknown - PartsUnknown #007
37 LIVE SHOW ~ MrKrotos - Mixset Showcase 2018 Part 2 (2018-12-29)
Without GROUP BY I see records with higher count like:
51 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
47 LIVE SHOW ~ Erebuss - Renegade sessions #0006 (UK)
46 LIVE SHOW ~ DnB_Bo - Mixset Showcase Mix 2018 Part 1 (29/12/18)
sorting group-by
sorting group-by
asked Dec 31 '18 at 16:53
AndyAndy
257
asked Dec 31 '18 at 16:53
AndyAndy
257
edited Dec 31 '18 at 16:59
Andy
asked Dec 31 '18 at 16:53
AndyAndy
257
asked Dec 31 '18 at 16:53
AndyAndy
257
asked Dec 31 '18 at 16:53
AndyAndy
257
257
Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within thestat_master_trackcolumn?
– redreddington
Dec 31 '18 at 17:16
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18
|
show 1 more comment
Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within thestat_master_trackcolumn?
– redreddington
Dec 31 '18 at 17:16
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18
Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within the
stat_master_track column?– redreddington
Dec 31 '18 at 17:16
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within the
stat_master_track column?– redreddington
Dec 31 '18 at 17:16
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18
|
show 1 more comment
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Could you give us a snapshot of your data? It's hard to tell what each of these columns refer to.
– redreddington
Dec 31 '18 at 16:58
Hi there, I have a shot of the table @ dropbox.com/s/lw4qh61mo36w8w9/table.png?dl=0
– Andy
Dec 31 '18 at 17:02
Hi, thanks for posting the structure, I was more after a couple of individual rows of data - for example what is actually contained within the
stat_master_trackcolumn?– redreddington
Dec 31 '18 at 17:16
Test data dump @ dropbox.com/s/pyp9wqdy3txvfu7/test%20data.sql?dl=0
– Andy
Dec 31 '18 at 17:17
Sorry just seen your comment, I have a test data dump above I just uploaded, took a few minutes to get that data together
– Andy
Dec 31 '18 at 17:18