SQL How do I transpose and group data into static columns? [duplicate] - sql

Question

This question already has answers here:
TSQL Pivot without aggregate function
(9 answers)
Closed 4 years ago.
I have a table with the following data:
UID LAST FIRST FUND AMOUNT STATUS
1 Smith John C 100 1
1 Smith John B 250 1
1 Smith John E 150 1
2 Jones Meg B 275 1
2 Jones Meg F 150 1
3 Carter Bill A 100 1
I would like to transpose the FUND, AMOUNT and STATUS values for each UID into a single row for each UID. The resulting table would have columns added for FUND_1, AMT_1, STATUS_1, FUND_2, AMT_2, STATUS_2, FUND_3, AMT_3, STATUS_3. Each UID may or may not have a total of 3 funds. If they do not, the remaining fund, amt, and status columns are left blank. The resulting table would appear as:
UID LAST FIRST FUND_1 AMT_1 STATUS_1 FUND_2 AMT_2 STATUS_2 FUND_3 AMT_3 STATUS_3
1 Smith John C 100 1 B 250 1 E 150 1
2 Jones Meg B 275 1 F 150 1
3 Carter Bill A 100 1
For clarification, this is how the data would move from the existing table to the resulting table for UID 1:
It seems I am unable to use PIVOT because FUND_1, FUND_2, FUND_3 will be different fund categories for each person. The question, TSQL Pivot without aggregate function helps but doesn't answer my question since I have multiple rows in what would be the the DBColumnName in that question.

Answer 1

This is a pretty common conditional aggregation. Notice how I posted consumable data as a table and insert statements. To be honest it took longer to do that portion than the actual code to select the data. You should do this in the future. Also you should avoid using keywords as column names.
declare #Something table
(
UID int
, LAST varchar(10)
, FIRST varchar(10)
, FUND char(1)
, AMOUNT int
, STATUS int
)
insert #Something values
(1, 'Smith', 'John', 'C', 100, 1)
, (1, 'Smith', 'John', 'B', 250, 1)
, (1, 'Smith', 'John', 'E', 150, 1)
, (2, 'Jones', 'Meg', 'B', 275, 1)
, (2, 'Jones', 'Meg', 'F', 150, 1)
, (3, 'Carter', 'Bill', 'A', 100, 1)
;
with SortedValues as
(
select *
, RowNum = ROW_NUMBER() over(partition by UID order by (select null))
from #Something
)
select UID
, Last
, First
, Fund_1 = max(case when RowNum = 1 then Fund end)
, Amt_1 = max(case when RowNum = 1 then Amount end)
, Status_1 = max(case when RowNum = 1 then Status end)
, Fund_2 = max(case when RowNum = 2 then Fund end)
, Amt_2 = max(case when RowNum = 2 then Amount end)
, Status_2 = max(case when RowNum = 2 then Status end)
, Fund_3 = max(case when RowNum = 3 then Fund end)
, Amt_3 = max(case when RowNum = 3 then Amount end)
, Status_3 = max(case when RowNum = 3 then Status end)
from SortedValues
group by UID
, Last
, First
order by UID
, Last
, First