I am trying to understand how to pivot data within T-SQL but can't seem to get it working. I have the following table structure
+-------------------+-----------------------+
| Name | Value |
+-------------------+-----------------------+
| TaskId | 12417 |
| TaskUid | XX00044497 |
| TaskDefId | 23 |
| TaskStatusId | 4 |
| Notes | |
| TaskActivityIndex | 0 |
| ModifiedBy | Orange |
| Modified | /Date(1554540200000)/ |
| CreatedBy | Apple |
| Created | /Date(2121212100000)/ |
| TaskPriorityId | 40 |
| OId | 2 |
+-------------------+-----------------------+
I want to pivot the name column to be columns expected output
+--------+------------------------+-----------+--------------+-------+-------------------+------------+-----------------------+-----------+-----------------------+----------------+-----+
| TASKID | TASKUID | TASKDEFID | TASKSTATUSID | NOTES | TASKACTIVITYINDEX | MODIFIEDBY | MODIFIED | CREATEDBY | CREATED | TASKPRIORITYID | OID |
+--------+------------------------+-----------+--------------+-------+-------------------+------------+-----------------------+-----------+-----------------------+----------------+-----+
| | | | | | | | | | | | |
| 12417 | XX00044497 | 23 | 4 | | 0 | Orange | /Date(1554540200000)/ | Apple | /Date(2121212100000)/ | 40 | 2 |
+--------+------------------------+-----------+--------------+-------+-------------------+------------+-----------------------+-----------+-----------------------+----------------+-----+
Is there an easy way of doing it? The columns are fixed (not dynamic).
Any help appreciated
Try this:
select * from yourtable
pivot
(
min(value)
for Name in ([TaskID],[TaskUID],[TaskDefID]......)
) as pivotable
You can also use case statements.
You must use the aggregate function in the pivot table.
If you want to learn more, here is the reference:
https://learn.microsoft.com/en-us/sql/t-sql/queries/from-using-pivot-and-unpivot?view=sql-server-2017
Output (I only tried three columns):
DB<>Fiddle
Related
I was trying to convert the trace table to resulted table in postgress. I have hug data in the table.
I have table with name : Trace
entity_id | ts | key | bool_v | dbl_v | str_v | long_v |
---------------------------------------------------------------------------------------------------------------
1ea815c48c5ac30bca403a1010b09f1 | 1593934026155 | temperature | | | | 45 |
1ea815c48c5ac30bca403a1010b09f1 | 1593934026155 | operation | | | Normal | |
1ea815c48c5ac30bca403a1010b09f1 | 1593934026155 | period | | | | 6968 |
1ea815c48c5ac30bca403a1010b09f1 | 1593933202984 | temperature | | | | 44 |
1ea815c48c5ac30bca403a1010b09f1 | 1593933202984 | operation | | | Reverse | |
1ea815c48c5ac30bca403a1010b09f1 | 1593933202984 | period | | | | 3535 |
Trace Table
convert the above table into following table in PostgreSQL
Output Table: Result
entity_id | ts | temperature | operation | period |
----------------------------------------------------------------------------------------|
1ea815c48c5ac30bca403a1010b09f1 | 1593934026155 | 45 | Normal | 6968 |
1ea815c48c5ac30bca403a1010b09f1 | 1593933202984 | 44 | Reverse | 3535 |
Result Table
Have you tried this yet?
select entity_id, ts,
max(long_v) filter (where key = 'temperature') as temperature,
max(str_v) filter (where key = 'operation') as operation,
max(long_v) filter (where key = 'period') as period
from trace
group by entity_id, ts;
I have a table "Listing" that looks like this:
| listing_id | amenities |
|------------|--------------------------------------------------|
| 5629709 | {"Air conditioning",Heating, Essentials,Shampoo} |
| 4156372 | {"Wireless Internet",Kitchen,"Pets allowed"} |
And another table "Amenity" like this:
| amenity_id | amenities |
|------------|--------------------------------------------------|
| 1 | Air conditioning |
| 2 | Kitchen |
| 3 | Heating |
Is there a way to join the two tables in a new one "Listing_Amenity" like this:
| listing_id | amenities |
|------------|-----------|
| 5629709 | 1 |
| 5629709 | 3 |
| 4156372 | 2 |
You could use unnest:
CREATE TABLE Listing_Amenity
AS
SELECT l.listing_id, a.amenity_id
FROM Listing l
, unnest(l.ammenities) sub(elem)
JOIN Amenity a
ON a.ammenities = sub.elem;
db<>fiddle demo
I am struggling to do a loop on a Postgres, but functions on postgres are not my piece of cake.
I have the following table on postgres:
| portfolio_1 | total_risk |
|----------------|------------|
| Top 10 Bets | |
| AAPL34 | 2,06699 |
| DISB34 | 1,712684 |
| PETR4 | 0,753324 |
| PETR3 | 0,087767 |
| VALE3 | 0,086346 |
| LREN3 | 0,055108 |
| AMZO34 | 0,0 |
| Bottom 10 Bets | |
| AAPL34 | 0,0 |
What I'm trying to do is get the values after the "Top 10 Bets" and before the "Botton 10 Bets".
My goal is the following result:
| portfolio_1 | total_risk |
|-------------|------------|
| AAPL34 | 2,06699 |
| DISB34 | 1,712684 |
| PETR4 | 0,753324 |
| PETR3 | 0,087767 |
| VALE3 | 0,086346 |
| LREN3 | 0,055108 |
| AMZO34 | 0,0 |
So, my goal is to take off the "Top 10 Bets", the "Botton 10 Bets" and the AAPL34 after the "Botton 10 Bets", which was repeated.
The quantity of rows is variable (I'm importing it from an Excel file), so I need a loop to do this, right?
SQL tables and result sets represent unordered sets. There is no "before" or "after" unless rows explicitly provide that information.
Let me assume that you have such a column, which I will call id for convenience.
Then you can do this in several ways. Here is one:
select t.*
from t
where t.id > (select min(t2.id) from t t2 where t2.portfolio_1 = 'Top 10 Bets') and
t.id < (select max(t2.id) from t t2 where t2.portfolio_1 = 'Bottom 10 Bets');
I'm trying to get the last four digits of the field "SERIAL8" and put that in a new field called "SS4". Here is the query I'm trying to use but it isn't working. I'm new at this, so any help would be appreciated
SELECT * FROM CUSTOMER_TABLE
SUBSTRING (SERIAL,4,4) as 'SS4'
CUSTOMER_TABLE
+-----------------------+------------+----------+--+
| "Complaint Full Date" | Source | SERIAL | |
+-----------------------+------------+----------+--+
| 02/04/16 | DAPIS_CAIR | DG540732 | |
| 04/18/16 | DAPIS_CAIR | DG553384 | |
| 03/23/17 | RO | DG559515 | |
| 03/29/16 | CAIR | DG559781 | |
| 12/10/14 | DAPIS_CAIR | DG561621 | |
+-----------------------+------------+----------+--+
I have one table:
| id | head1| head2 | head3|
| 1 | fv1 | fw1,fw2,fw3| fv3 |
| 2 | sv2 | sw1,sw2,sw3| sv4 |
And would like to have the following:
| id | head2 |
| 1 | fw1 |
| 1 | fw2 |
| 1 | fw3 |
| 2 | sw1 |
| 2 | sw2 |
| 2 | sw3 |
So I would like to split a comma-delimited content of some columns and then copy it over into the different table as rows for search purposes.
Which Talend component should I use to achieve this? Is that possible?
tNormalize should help you with this problem.
Just select "," as field separator, and head2 as the column to normalize.