IBM BPM, V8.0.1, All platforms > Programming IBM BPM > Developing client applications for BPEL processes and tasks > Queries on BPEL process and task data > Query tables in Business Process Choreographer > Attribute types for query tables
Attribute type compatibility
Use attribute types when you define query tables in Business Process Choreographer, when you run queries on the query tables, and to access values of a query result.
The following table shows the attribute types and their compatible attribute types, which can be used to define filters and selection criteria in query tables. Compatible attribute types are marked with X.
Attribute type compatibility Attribute type ID STRING NUMBER TIMESTAMP DECIMAL BOOLEAN ID X STRING X NUMBER X X TIMESTAMP X DECIMAL X X BOOLEAN X In query table expressions that specify filter and condition criteria, types of attributes or values that are compared must be compatible.
For example, WI.OWNER_ID=1 is an invalid filter because the left-side operand is of type STRING, and the right-side operand is of type NUMBER.