ODBC guide

Create or update a JSON file from external source

Creates or updates a JSON file using a streaming approach. Reads records from an external source (e.g. Microsoft SQL Server) and writes JSON. Use LayoutMap to customize the JSON layout. If the file does not exist, a new one is created.

INSERT INTO FileReaderWriterJson
SOURCE( 'MSSQL'--OR 'ODBC'
, 'Data Source=localhost;Initial Catalog=Northwind;Integrated Security=true'
, 'select OrderId,CustomerId,OrderDate FROM Northwind.dbo.Orders'
)
WITH(
	    DriveId='b!XpzQciaV_k6my5II5L22J0C4iRhyz21Js89PUyZ6-w0lH0AYv_I8RJHpXZQ81efD'
	  , FileId='root:/test_out.json:'  --Path must end with colon
	--, FileId='root:/subfolder/test_out.json:'
	--, FileId='01N3NxxxxxxxxxxWZYSDJ'  --exising File ID
	--, ContinueOn404Error=0 --Fail if file not found (Useful for overwrite mode for exising file)	
	  , JsonOutputFormat='Multicontent' --Default , Array2D, ArrayLines ...
	--, DoNotOutputNullProperty='True'
	--, Encoding='UTF8' --UTF8WithoutBOM
    --, WriterDateTimeFormat='yyyy-MM-ddTHH:mm:ss.fff'
	
	--Example#1: Output all columns
	, LayoutMap='<?xml version="1.0"  ?>
<settings>
  <dataset id="root" main="True" readfrominput="True" />
  <map src="*" />  
</settings>'

	--Example#2: Nested JSON (Records under an array)
	/*
	, LayoutMap='<?xml version="1.0" ?>
<settings singledataset="True">
  <dataset id="root" main="True" readfrominput="True" />
  <map name="MyArray" dataset="root" maptype="DocArray">
    <map src="OrderID" name="OrderID" />
    <map src="OrderDate" name="OrderDate" />
  </map>
</settings>'
   */
   
	--Example#3: Nested JSON (Records under a sub document section)
	/*	
	, LayoutMap='<?xml version="1.0" ?>
<settings>
  <dataset id="dsRoot" main="True" readfrominput="True" />
  <map name="NestedSection">
    <map src="OrderID" name="OrderID_MyLabel" />
    <map src="OrderDate" name="OrderDate_MyLabel" />
  </map>
</settings>'
	*/
)