How to Query a Data Source Directly

It is possible to query data straight from a Data Source, instead of loading it into a Datamart and querying from there. This can save unnecessary processing of loading from Data Source to Datamart.

Refer to the following API links for more in-depth info:

def dmCtx = api.getDatamartContext()
def salesDS = dmCtx.getDataSource("SalesHistory2")
def dsQuery = dmCtx.newQuery(salesDS)

def filters = [
    Filter.equal("Sku", api.product("sku")),
]

dsQuery.select("SUM(Revenue)", "revenue")
dsQuery.select("SUM(UnitsSold)", "unitsSold")
dsQuery.select("YearMonth", "month")
dsQuery.where(filters)

def result = dmCtx.executeQuery(dsQuery)