I want to combine data from multiple rows into a single comma separated string without using the XML function as it is not supported.
Here is an example:
ID Food
1 Apple
1 orange
2 wine
2 whiskey
2 beer
3 rice
3 wheat
3 maize
3 quinoa
Note that number rows per id is not fixed
Output:
ID Foods
1 Apple, orange
2 wine, whiskey, beer
3 rice, wheat, maize, quinoa
#standardSQL
select id, string_agg(food) as foods
from `project.dataset.table`
group by id
Related
I would appreciate some help for below issue. I have below table
id
items
1
Product
2
Tea
3
Coffee
4
Sugar
5
Product
6
Rice
7
Wheat
8
Product
9
Beans
10
Oil
I want output like below. Basically I want to increase the rank when item is 'Product'. May I know how can I do that? For data privacy and compliance purposes I have modified the data and column names
id
items
ranks
1
Product
1
2
Tea
1
3
Coffee
1
4
Sugar
1
5
Product
2
6
Rice
2
7
Wheat
2
8
Product
3
9
Beans
3
10
Oil
3
I have tried Lag and lead functions but unable to get expected output
Here is solution using a derived value of 1 or 0 to denote data boundaries SUM'ed up with the ROWS UNBOUNDED PRECEDING option, which is key here.
SELECT
id,
items,
SUM(CASE WHEN items='Product' THEN 1 ELSE 0 END) OVER (ORDER BY id ROWS UNBOUNDED PRECEDING) as ranks
FROM
There is a table like below one
ID Vals
1 Product
2 Milk
3 Butter
4 Cheese
5 Yogurt
6 Product
7 Muesli
8 Porridge
9 Product
10 Banana
Output Needed like below
RWNUM ID Vals
1 1 Product
1 2 Milk
1 3 Butter
1 4 Cheese
1 5 Yogurt
2 6 Product
2 7 Muesli
2 8 Porridge
3 9 Product
3 10 Banana
Every time Product is encountered, the RWNUM column value will be increased by one.
This needs to be implemented in a single TSQL Query.
Any idea is welcome.
It looks like you want a cumulative sum of "product":
select t.*,
sum(case when val = 'Product' then 1 else 0 end) over (order by id) as rwnum
from t;
I have following type of data
ingredients:
Milk
Apple
Rice
...
Then its purchased Date
26.10.2020
25.10.2020
etc
Each item is recorded when its purchased.
I want now to get at the right hand side to see how many times I bought apples, rice & milk.
As now I only see
Dates ---> 25.10.2020|24.10.2020
Rice 1 NULL
Milk 1 1
Apples NULL 1
My Goal is to see:
Dates ---> 25.10.2020|24.10.2020 SUM
Rice 1 NULL 1
Milk 1 1 2
Apples NULL 1 1
Thank you for your support!
The example of the data
Now I want to see at the end to total SUM, as there would be multiple days.
I am trying to count the number of times a value (mytype) appears within a distinct id value, and update my table with this count (idsubtotal) for each row. The table I have:
id | mytype | idsubtotal
-----+--------+-----------
44 red
101 red
101 red
101 blue
101 yellow
494 red
494 blue
494 blue
494 yellow
494 yellow
I need to calculate/update the idsubtotal column, so it is like:
id | mytype | idsubtotal
-----+--------+-----------
44 red 1
101 red 2
101 red 2
101 blue 1
101 yellow 1
494 red 1
494 blue 2
494 blue 2
494 yellow 2
494 yellow 2
When I try this below, it is counting how many times the mytype value appears in the entire table, but I need to know how many times it appears within that sub-group of id values (e.g. How many times does "red" appear within id 101 rows, answer = 2).
SELECT id, mytype,
COUNT(*) OVER (PARTITION BY mytype) idsubtotal
FROM table_name
I know storing this subtotal in the table itself (versus calculating it live when needed) constitutes a bad data model for the table, but I need to do it this way in my case.
Also, my question is similar to this question but slightly different, and nothing I've tried to tweak using my very primitive understanding of SQL from the previous responses or other posts have worked. TIA for any ideas.
UPDATE table_name a
SET idsubtotal=( SELECT COUNT(1)
FROM table_name b
WHERE a.id=b.id
AND a.mytype=b.mytype
)
When I try this below, it is counting how many times the mytype value appears in the entire table, but I need to know how many times it appears within that sub-group of id values (e.g. How many times does "red" appear within id 101 rows, answer = 2).
SELECT id, mytype, COUNT(*)
FROM table_name
GROUP BY id, mytype
I have the following 3 tables:
1) Sweetness Table
FruitIndex CountryIndex Sweetness
1 1 10
1 2 20
1 3 400
2 1 50
2 2 123
2 3 1
3 1 49
3 2 40
3 3 2
2) Fruit Name Table
FruitIndex FruitName
1 Apple
2 Orange
3 Peaches
3) Country Name Table
CountryIndex CountryName
1 UnitedStates
2 Canada
3 Mexico
I'm trying to perform a CrossTab SQL query to end up with:
Fruit\Country UnitedStates Canada Mexico
Apple 10 20 400
Orange 50 123 1
Peaches 49 40 2
The challenging part is to label the rows/columns with the relevant names from the Name tables.
I can use MS Access to design 2 queries,
create the joins the fruit/country names table with the Sweetness table
perform crosstab query
However I'm having trouble doing this in a single query. I've attempted nesting the 1st query's SQL into the 2nd, but it doesn't seem to work.
Unfortunately, my solution needs to be be wholly SQL, as it is an embedded SQL query (cannot rely on query designer in MS Access, etc.).
Any help greatly appreciated.
Prembo.
How about:
TRANSFORM First(Sweetness.Sweetness) AS FirstOfSweetness
SELECT Fruit.FruitName
FROM (Sweetness
INNER JOIN Fruit
ON Sweetness.FruitIndex = Fruit.FruitIndex)
INNER JOIN Country
ON Sweetness.CountryIndex = Country.CountryIndex
GROUP BY Fruit.FruitName
PIVOT Country.CountryName;
I hate to rely on an outside post and present it as my answer, but this is a pretty steep topic and I can't do it justice. So I suggest you look at this article.