How to find the index of a record read from a StreamBase Query Table
Article ID: KB0076147
Updated On:
| Products | Versions |
|---|---|
| TIBCO Streaming | - |
Description
When reading from a StreamBase Query Table by specifying a Primary Key, is there a way to find the index of the returned tuple in the table?
Issue/Introduction
How to find the index of a record read from a StreamBase Query Table
Resolution
StreamBase Tables do not have a meaningful index value for what row-of-the-table the tuple came from. The result set of the query is sorted, so there is a position within-the-result-set which can be reported along with the row data using the metadata.rowNumber expression. The metadata qualifier is documented in the Help under StreamBase Documentation > Authoring Guide > Using StreamBase Operators > Using the Query Operator > The metadata Qualifier
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