obtain data from table 2 using reference of table 1 [sql-server] - sql

Question

[TRN_ID] is the id of another table, how to get the data from that table and show this data in the xml output
SELECT TOP (1) [ECB_ID] as Id
,[ECB_PASSWORD_GENERATED] as clave
,[ECB_CONSECUTIVE_NUMBER] as consecutive
,[ECB_BILL_DATE] as date
,[TRN_ID] <- id of other table
,[QRC_ID]
FROM [crdx_COREDev1].[dbo].[ECB_ELECTRONICBILL]
FOR XML PATH ('FE')
example of output
<FE>
<id>1</id>
<pass>0</pass>
<CONSECUTIVE>0</CONSECUTIVE>
....
--These are the data from the other table.
<emisor>
<name>1</name>
<Copany>myCompa</Company>
...
...
</emisor>
</FE>
In summary, I have a table 1 with different data, some of those data are references to other tables, using that reference I want to obtain the data from table 2

Answer 1

You can use a nested FOR XML linked to your TRN_ID.
SELECT TOP (1)
[ECB_ID] as Id,
[ECB_PASSWORD_GENERATED] as clave,
[ECB_CONSECUTIVE_NUMBER] as consecutive,
[ECB_BILL_DATE] as date,
[TRN_ID],
[QRC_ID],
(
SELECT
N.YourWantedColumn
FROM
YourOtherTable AS N
WHERE
E.TRN_ID = N.TRN_ID -- I'm guessing it's called N.TRN_ID
FOR XML
PATH ('emisor'), TYPE
)
FROM
[crdx_COREDev1].[dbo].[ECB_ELECTRONICBILL] AS E
FOR XML
PATH ('FE')