QBCase

Properties Summarized

Type	Name	Summary
QBTableClause	parent	Get query builder parent table clause, this may be a query or a join clause.
QBSelect	root	Get query builder parent.

Methods Summarized

Type	Name	Summary
QBColumn	else(value)	Set the return value to use when none of the when-clauses conditions are met.
QBCaseWhen	when(condition)	Add a when-clause to the case searched expression.

Properties Detailed

parent

Get query builder parent table clause, this may be a query or a join clause.

Type QBTableClause

Sample

var query = datasources.db.example_data.person.createSelect();
	query.where.add(query.joins.person_to_parent.joins.person_to_parent.columns.name.eq('john'))
	foundset.loadRecords(query)

root

Get query builder parent.

Type QBSelect

Sample

var subquery = datasources.db.example_data.order_details.createSelect();

	var query = datasources.db.example_data.orders.createSelect();
	query.where.add(query
		.or
			.add(query.columns.order_id.not.isin([1, 2, 3]))

			.add(query.exists(
					subquery.where.add(subquery.columns.orderid.eq(query.columns.order_id)).root
			))
		)

	foundset.loadRecords(query)

Methods Detailed

else(value)

Set the return value to use when none of the when-clauses conditions are met.

Parameters

• Object value The value.

Returns: QBColumn

Sample

var query = datasources.db.example_data.order_details.createSelect();

// case expressions can be added to the result of the query
	query.result.add(query.case.when(query.columns.quantity.ge(1000)).then('BIG').else('small'));

 // they can also be used in conditions
	query.where.add(query.case
		.when(query.columns.discount.gt(10)).then(50)
		.when(query.columns.quantity.le(20)).then(70)
		.else(100)
	.multiply(query.columns.unitprice).lt(10000));

when(condition)

Add a when-clause to the case searched expression.

Parameters

• QBCondition condition The condition.

Returns: QBCaseWhen

Sample

var query = datasources.db.example_data.order_details.createSelect();

// case expressions can be added to the result of the query
	query.result.add(query.case.when(query.columns.quantity.ge(1000)).then('BIG').else('small'));

 // they can also be used in conditions
	query.where.add(query.case
		.when(query.columns.discount.gt(10)).then(50)
		.when(query.columns.quantity.le(20)).then(70)
		.else(100)
	.multiply(query.columns.unitprice).lt(10000));

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