How do I use SQL Server to select into another table? - sql

Question

I am consolidating a web service. I am replacing multiple calls to the service with one call that contains the data.
I have created a table:
CREATE TABLE InvResults
(
Invoices nvarchar(max),
InvoiceDetails nvarchar(max),
Products nvarchar(max)
);
I used (max) because I don't know how complex the json will get at this time.
I need to do some sort of selects like this (this is pseudocode, not actual SQL):
SELECT
(SELECT *
INTO InvResults for Column Invoices
FROM MyInvoiceTable
WHERE SomeColumns = 'someStuffvariable'
FOR JSON PATH, ROOT('invoices')) AS invoices;
SELECT
(SELECT *
INTO InvResults for Column InvoiceDetails
FROM MyInvoiceDetailsTable
WHERE SomeColumns = 'someStuffvariable'
FOR JSON PATH, ROOT('invoicedetails')) AS invoicedetails;
I don't know how to format this and my google skills are failing me at this point. I understand that I probably want to use an UPDATE statement, but I'm not sure how to do this in combination with the rest of my requirements. I'm exploring How do I UPDATE from a SELECT in SQL Server? but I am still at a halt.
The end result should be a table "InvResults" that has 3 columns containing one row with results from Select statements as JSON. The column names should be defined the same as the json root objects.

Answer 1

INSERT INTO InvResults(Invoices,InvoidesDetails)
SELECT
(SELECT *
INTO InvResults for Column Invoices
FROM MyInvoiceTable
WHERE SomeColumns = 'someStuffvariable'
FOR JSON PATH, ROOT('invoices'))
,
(SELECT *
INTO InvResults for Column InvoiceDetails
FROM MyInvoiceDetailsTable
WHERE SomeColumns = 'someStuffvariable'
FOR JSON PATH, ROOT('invoicedetails'))
;
Because the SELECT.. FOR JSON is only returning 1 row above works.
The third field is easily to added, but left to do for yourself 😉