Optimization: Improve RemoteTableQueryFactory.selectAnyColumn implementation

exasol / dynamodb-virtual-schema

Virtual Schema for accessing Amazon AWS DynamoDB through Exasol

MIT License

1 stars 1 forks source link

Optimization: Improve RemoteTableQueryFactory.selectAnyColumn implementation #97

Closed jakobbraun closed 2 years ago

jakobbraun commented 4 years ago

At the moment the first column is selected. This leaves room for optimization, since the first column could contain large texts, while the second could be an integer.

Questions:

Is this feature needed for other queries than COUNT(*)?
Must the values be correct, or could it be NULLs?