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4 commits

Author SHA1 Message Date
Igor Babaev
79e32e47a1 MDEV-23778 Derived table handler looses data on conversion from HEAP to Aria 
This bug happened when the HEAP temporary table used for the derived table
created for a derived handler of a remote engine of the federated type
became full and was converted to an Area table. For this conversion
the tmp_table_param parameter must be always taken from the select_unit
object created for the result of the derived table.
 2020-09-28 15:16:28 -07:00
Igor Babaev
27c3abde30 MDEV-17096 Pushdown of simple derived tables to storage engines 
MDEV-17631 select_handler for a full query pushdown

Added comments and file headers for files introduced in these tasks.
 2019-02-12 22:56:24 -08:00
Igor Babaev
d11be23933 MDEV-17096 Pushdown of simple derived tables to storage engines 
Resolved the problem of forming a proper query string for FEDERATEDX.
Added test cases.

Cleanup of extra spaces.
 2019-02-09 22:54:26 -08:00
Igor Babaev
16327fc2e7 MDEV-17096 Pushdown of simple derived tables to storage engines 
MDEV-17631 select_handler for a full query pushdown

Interfaces + Proof of Concept for federatedx with test cases.

The interfaces have been developed for integration of ColumnStore engine.
 2019-02-06 17:02:44 -08:00