API Reference > presentation-common > PresentationRules > ECPropertyValueQuerySpecification ECPropertyValueQuerySpecification Interface Specification which specifies the name of the parent instance property whose value is the ECSQL used to query for instances. Precondition: can be used only if parent node is ECInstance node. If there is no immediate parent instance node it will go up until it finds one. Extends QuerySpecificationBase Properties Name Type Description parentPropertyName string Specifies name of the parent instance property whose value specType ECPropertyValue Used for serializing to JSON. Inherited properties Name Type Inherited from Description class SingleSchemaClassSpecification QuerySpecificationBase Specification of ECClass whose instances the query returns. Defined in presentation/common/src/rules/hierarchy/CustomQueryInstanceNodesSpecification.ts Line 80 Last Updated: 13 June, 2024