Mixing
Obtaining the aggregate sum of one value from multiple columns in sqlite
I have a table the equivalent of;
box, fruit1, fruit2, fruit3, no1, no2, no3
1, apple, banana, orange, 12, 23, 7
2, pear, apple, banana, 5, 15, 11
...
I want to run a query which will aggregate the total number of apples, oranges and bananas. It should result in (for boxes 1 and 2):
fruit, no
apples, 27
bananas, 34
oranges, 7
pears, 5
I obviously can't do a simple sum() and group by because I want to group by the fruit as it appears in any column, not just a single one.
Also, in the real life version, there are more than 100 different types of 'fruit' so doing a case...when selection for each one isn't really viable.
sqlite aggregate-functions
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
add a comment |
I have a table the equivalent of;
box, fruit1, fruit2, fruit3, no1, no2, no3
1, apple, banana, orange, 12, 23, 7
2, pear, apple, banana, 5, 15, 11
...
I want to run a query which will aggregate the total number of apples, oranges and bananas. It should result in (for boxes 1 and 2):
fruit, no
apples, 27
bananas, 34
oranges, 7
pears, 5
I obviously can't do a simple sum() and group by because I want to group by the fruit as it appears in any column, not just a single one.
Also, in the real life version, there are more than 100 different types of 'fruit' so doing a case...when selection for each one isn't really viable.
sqlite aggregate-functions
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
add a comment |
I have a table the equivalent of;
box, fruit1, fruit2, fruit3, no1, no2, no3
1, apple, banana, orange, 12, 23, 7
2, pear, apple, banana, 5, 15, 11
...
I want to run a query which will aggregate the total number of apples, oranges and bananas. It should result in (for boxes 1 and 2):
fruit, no
apples, 27
bananas, 34
oranges, 7
pears, 5
I obviously can't do a simple sum() and group by because I want to group by the fruit as it appears in any column, not just a single one.
Also, in the real life version, there are more than 100 different types of 'fruit' so doing a case...when selection for each one isn't really viable.
sqlite aggregate-functions
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
I have a table the equivalent of;
box, fruit1, fruit2, fruit3, no1, no2, no3
1, apple, banana, orange, 12, 23, 7
2, pear, apple, banana, 5, 15, 11
...
I want to run a query which will aggregate the total number of apples, oranges and bananas. It should result in (for boxes 1 and 2):
fruit, no
apples, 27
bananas, 34
oranges, 7
pears, 5
I obviously can't do a simple sum() and group by because I want to group by the fruit as it appears in any column, not just a single one.
Also, in the real life version, there are more than 100 different types of 'fruit' so doing a case...when selection for each one isn't really viable.
sqlite aggregate-functions
sqlite aggregate-functions
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
asked Nov 22 '18 at 10:19
IsaacsonIsaacson
966
966
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Call off the dogs, I've got it;
select
fruit,
sum(number),
from
(
select
fruit1 as fruit,
sum(no1) as number,
from fruit_table
group by fruit1
union
select
fruit2 as fruit,
sum(no2) as number,
from fruit_table
group by fruit2
union
select
fruit3 as fruit,
sum(no3) as number,
from fruit_table
group by fruit3
union
select
)
Group by fruit
Create a union of all the different tables then aggregate from that unionC
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Call off the dogs, I've got it;
select
fruit,
sum(number),
from
(
select
fruit1 as fruit,
sum(no1) as number,
from fruit_table
group by fruit1
union
select
fruit2 as fruit,
sum(no2) as number,
from fruit_table
group by fruit2
union
select
fruit3 as fruit,
sum(no3) as number,
from fruit_table
group by fruit3
union
select
)
Group by fruit
Create a union of all the different tables then aggregate from that unionC
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
add a comment |
Call off the dogs, I've got it;
select
fruit,
sum(number),
from
(
select
fruit1 as fruit,
sum(no1) as number,
from fruit_table
group by fruit1
union
select
fruit2 as fruit,
sum(no2) as number,
from fruit_table
group by fruit2
union
select
fruit3 as fruit,
sum(no3) as number,
from fruit_table
group by fruit3
union
select
)
Group by fruit
Create a union of all the different tables then aggregate from that unionC
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
add a comment |
Call off the dogs, I've got it;
select
fruit,
sum(number),
from
(
select
fruit1 as fruit,
sum(no1) as number,
from fruit_table
group by fruit1
union
select
fruit2 as fruit,
sum(no2) as number,
from fruit_table
group by fruit2
union
select
fruit3 as fruit,
sum(no3) as number,
from fruit_table
group by fruit3
union
select
)
Group by fruit
Create a union of all the different tables then aggregate from that unionC
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
Call off the dogs, I've got it;
select
fruit,
sum(number),
from
(
select
fruit1 as fruit,
sum(no1) as number,
from fruit_table
group by fruit1
union
select
fruit2 as fruit,
sum(no2) as number,
from fruit_table
group by fruit2
union
select
fruit3 as fruit,
sum(no3) as number,
from fruit_table
group by fruit3
union
select
)
Group by fruit
Create a union of all the different tables then aggregate from that unionC
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
answered Nov 22 '18 at 10:46
IsaacsonIsaacson
966
966
add a comment |
add a comment |
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