derby select query just hangs
0
I'm running the following query in Derby through IJ:
select count(*) as cnt, factor from sp500_2003
where unq_seq in (select distinct unq_seq from sp500_2003
where factor = 'ZEC_11')
group by factor;
The table contains 522,000 records and looks like:
30100045BETA,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,BETA,BETA,2.208
30100045FAC_11,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_11,VOLTILTY,2.833
30100045FAC_12,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_12,MOMENTUM,-1.194
30100045FAC_13,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_13,SIZE_A,-1.824
30100045FAC_14,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_14,SIZENONL,-0.362
30100045FAC_15,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_15,TRADEACT,0.45
30100045FAC_16,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_16,GROWTH,0.706
30100045FAC_17,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_17,EARNYLD,-2.851
The first column is defined as the primary key.
The query just sits there. Is there anyway to make the query faster
select derby
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
add a comment |
0
I'm running the following query in Derby through IJ:
select count(*) as cnt, factor from sp500_2003
where unq_seq in (select distinct unq_seq from sp500_2003
where factor = 'ZEC_11')
group by factor;
The table contains 522,000 records and looks like:
30100045BETA,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,BETA,BETA,2.208
30100045FAC_11,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_11,VOLTILTY,2.833
30100045FAC_12,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_12,MOMENTUM,-1.194
30100045FAC_13,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_13,SIZE_A,-1.824
30100045FAC_14,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_14,SIZENONL,-0.362
30100045FAC_15,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_15,TRADEACT,0.45
30100045FAC_16,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_16,GROWTH,0.706
30100045FAC_17,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_17,EARNYLD,-2.851
The first column is defined as the primary key.
The query just sits there. Is there anyway to make the query faster
select derby
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01
add a comment |
0
0
0
I'm running the following query in Derby through IJ:
select count(*) as cnt, factor from sp500_2003
where unq_seq in (select distinct unq_seq from sp500_2003
where factor = 'ZEC_11')
group by factor;
The table contains 522,000 records and looks like:
30100045BETA,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,BETA,BETA,2.208
30100045FAC_11,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_11,VOLTILTY,2.833
30100045FAC_12,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_12,MOMENTUM,-1.194
30100045FAC_13,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_13,SIZE_A,-1.824
30100045FAC_14,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_14,SIZENONL,-0.362
30100045FAC_15,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_15,TRADEACT,0.45
30100045FAC_16,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_16,GROWTH,0.706
30100045FAC_17,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_17,EARNYLD,-2.851
The first column is defined as the primary key.
The query just sits there. Is there anyway to make the query faster
select derby
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
I'm running the following query in Derby through IJ:
select count(*) as cnt, factor from sp500_2003
where unq_seq in (select distinct unq_seq from sp500_2003
where factor = 'ZEC_11')
group by factor;
The table contains 522,000 records and looks like:
30100045BETA,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,BETA,BETA,2.208
30100045FAC_11,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_11,VOLTILTY,2.833
30100045FAC_12,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_12,MOMENTUM,-1.194
30100045FAC_13,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_13,SIZE_A,-1.824
30100045FAC_14,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_14,SIZENONL,-0.362
30100045FAC_15,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_15,TRADEACT,0.45
30100045FAC_16,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_16,GROWTH,0.706
30100045FAC_17,200301,45,20030100045,ADCT,A D C TELECOMMUNICATIONS,FAC_17,EARNYLD,-2.851
The first column is defined as the primary key.
The query just sits there. Is there anyway to make the query faster
select derby
select derby
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
asked Nov 14 '18 at 0:38
DCRDCR
2,38021748
2,38021748
Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01
add a comment |
Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01
Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01
Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01
add a comment |
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Here's some very high-level information about how to get started analyzing query performance: wiki.apache.org/db-derby/PerformanceDiagnosisTips and builds.apache.org/job/Derby-docs/lastSuccessfulBuild/artifact/…
– Bryan Pendleton
Nov 14 '18 at 14:01