Multiple Row creation from a single column values in Data Services

Hi

Below is the requirement:

We are getting array values from source in the column BillingSchedule as shown below and we have to extract individual billing schedule for each contract in a separate row for the respective contract, so one contract can have n numbers of billing schedules.

Source table: Contract

Case 1

Column Name :Contract_id

value=1

Column Name :Billing Schedule

values:

[ { startDate : { $numberLong : 1429501608000 }, endDate : { $numberLong : 1432093608000 }, amount : 0, amountBeforePromotion : 0, subjectPolicyIds : [ /data/SubjectPolicy/32469574 ], isFreeTrial : true }, { startDate : { $numberLong : 1432093608000 }, endDate : { $numberLong : 1440042408000 }, amount : 0, amountBeforePromotion : 17.39, subjectPolicyIds : [/data/SubjectPolicy/32469574 ], isFreeTrial : false },

Case 2

Column Name :Contract_id

value=2

Column Name :Billing Schedule

[ { startDate : { $numberLong : 1424235631000 }, endDate : { $numberLong : 1426824031000 }, amount : 0, subjectPolicyIds : [ /data/SubjectPolicy/32469574 ], isFreeTrial : true }, { startDate : { $numberLong : 1426824031000 }, endDate : { $numberLong : 1455944431000 }, amount : 17.39, subjectPolicyIds : [ /data/SubjectPolicy/32469574 ], isFreeTrial : false } ]

Please note that amountBeforePromotion is optional, it is present in Case 1 and not available in Case 2.

each row can be identified by "startdate" in the column Billingschedule, so in above cases we have 2 billing schedule for the respective contracts and we have to create 2 rows for the each contract in target table.

Target table columns

TIER_NUMBER :Billing schedule number

TIER_START_DATE:Billing schedule Start Date

TIER_END_DATE:Billing schedule End Date

TIER_$AMOUNT: Billing schedule Amount

IS_FREE_TRIAL: Billing schedule is free trail value

How to convert the values from Billing schedule column to multiple rows for the individual contract?

Thanks in advance for the help and support.