- Fix iagnostic position when parsing undefined symbol.
- Improve handle error in data provider.
- Don't apply CROSS join operator if one of the tables is empty.
- Update docs for new Data provider design.
- Remove un needed code for remove hidden selection after engine.
- Support exponentiation operator.
- Optimize the calling of data provider if table is empty.
- Implement Select ... INTO OUTFILE.
- Support INTO OUTFILE Terminated options and enclosed.
- Implement Select ... into dumpfile feature.
- Improve error messages when use options with dumpfile.