Today, I will be discussing about one of the common issue related to query creation using query build data source.
Let's suppose we have following tables.
- Leave Assignment table - (Base Table) - Namely Parent for demo purpose
- HcmEmployment table - Namely Child 1 for demo purpose
- Leave Plan table - Namely Child 1 for demo purpose
We want to link base table with both hcm employment (child1) and leave plan table (child2) using query build data source. Below is the code used for performing this operation.
public QueryRun fetchMultipleTableQueryDemo()
{
QueryBuildDataSource
hcmEmploymentds;
QueryBuildDataSource
qbds;
Query query = new Query();
// Adding parent as a datasource
QueryBuildDataSource qbds = query.addDataSource(tableNum(Parent));
// Adding child 1 as a datasource
hcmEmploymentds= qbds.addDataSource(tableNum(Child1));
hcmEmploymentds.joinMode(JoinMode::InnerJoin);
hcmEmploymentds.addLink(fieldNum(Parent, Worker),fieldNum(Child1, Worker));
hcmEmploymentds.fetchMode(QueryFetchMode::One2One);
// Adding child 2 as a datasource
qbds = qbds.addDataSource(tableNum(Child2));
qbds.joinMode(JoinMode::InnerJoin);
qbds.addLink(fieldNum(Parent, LeaveDetail), fieldNum(Child1, RecId));
qbds.fetchmode(QueryFetchMode::One2One);
return new QueryRun(query);
}