WL#4536: QFPD: Query decomposition and optimization for query fragments
Affects: Server-7.x — Status: Un-Assigned — Priority: Medium
================================================================================ WORK IN PROGRESS ================================================================================ The goal of this task is to deal with: * decomposition of a query into query fragments, * negotiation with storage engine(s) what fragments can be pushed, * cost-based optimization of the initial query that takes into account the pushdownability of the query fragments and their cost, * rewriting the original query into a reduced query in terms of the pushdown fragments. Due to the size of the problem, most likely this task will be split further into subtasks.
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