- [[walkTree filters]]
- [[optimizeFilterOrder]]
- [[SubQueries TBD]]
- [[WFS_checkWindowFunction]]
- [[TBD checkAggregation]] 
- [[JI::havingStepVec -> querySteps]]
- [[iterate querySteps]]
	- Filter VARBINARY from querySteps
	- pColStep -> pColScanStep translation; feel in seenTableIds 
- [[doAggProject]]
- [[doProject]]