Hi Jeremy,
I tried but it's not working
MSSQL raise an error "Incorrect syntax near the keyword 'UNPIVOT'".
It is because a "comma", right after the alias "p1" and before the operator
UNPIVOT, is found in the SQL statement
Please advise. thank you.
Kenneth
On Thursday, June 21, 2018 at 12:25:28 PM UTC-7, Jeremy Evans wrote:
>
> On Thursday, June 21, 2018 at 10:41:52 AM UTC-7, lkfken wrote:
>>
>> Hi Jeremy,
>>
>> Sorry about that. I misunderstood on what you need.
>>
>> Here is the SQL statement
>> SELECT NAME,
>> dates,
>> source
>> FROM (SELECT NAME,
>> a_date,
>> b_date,
>> c_date
>> FROM test
>> WHERE NAME = 'TOM') AS p1
>> UNPIVOT ( dates
>> FOR source IN (a_date,
>> b_date,
>> c_date) ) AS p2;
>>
>> so what I want is to have "p1" come from Sequel::Dataset (ie: Test.toms,
>> Test.joes, etc) instead of hard code it into this SQL statement.
>>
>
> This should work, and produce the same SQL (modulo identifier quoting):
>
> DB.select(:NAME, :dates, :source).
> from(DB[:test].select(:NAME, :a_date, :b_date,
> :c_date).where(:name=>'TOM').as(:p1),
> Sequel.lit("UNPIVOT (dates FOR source IN (a_date, b_date,
> c_date))").as(:p2))
>
> Thanks,
> Jeremy
>
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