* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* Add configuration related operation interface

* The configuration works

* Add ast transformer

* Add expression and selectstmt transformer

* Remove useless directories(types,session,sessionctx,util); change Subquery,TableExpr; add CaseExpr; add IntervalExpr; add IsTruthExpr; add DefaultVal; add Union Clause; add Insert Statement; “

* Fix decimal; add CreateTable

* Add origString for NumVal

* Fix decimal null value

* Remove some useless code

* Try to connect the frontend with the computation engine with the fake storage engine and the fake nodes

* The frontend are connected with the computation engine

* Enhance buffer related code

* Update for index

* Update db_test

* Add colpart for dataio

* Remove dataio colseg

* Small refactor

* Remove some dummy info in part

* Fix bug in mock vector

* Update some test

* Update meta block

* Add index

* Update for performance

* Fix bug fir data race

* Implement a simple zonemap index

* Add dataio helper

* Add dataio index

* Update buffer manager key from common.ID to uint64

* Add colpart for dataio

* Remove dataio colseg

* Small refactor

* Remove some dummy info in part

* Fix bug in mock vector

* Update some test

* Update meta block

* Fix bug in node iface

* Refactor metadata test

* Add fs manager

* Refactor layout dataio

* Lock for blk and seg file read

* Implement layout dataio mock manager

* Fix some bugs

* Temp disable blk handle pool 

* Add cursor api for blk handle for test

* Fix data race in buffer manager

* Update db test

* Change metadata table

* Update table data

* Data replay 1

* Fix bug in createtbl

* Update metadata block

* Update upgradeblkop

* Refactor col data

* Refactor some test

* Refactor col block

* Update upgradeblkop

* Fix data race

* Fix bug for meta and data replay

* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* Add configuration related operation interface

* The configuration works

* Add ast transformer

* Add expression and selectstmt transformer

* Remove useless directories(types,session,sessionctx,util); change Subquery,TableExpr; add CaseExpr; add IntervalExpr; add IsTruthExpr; add DefaultVal; add Union Clause; add Insert Statement; “

* Fix decimal; add CreateTable

* Add origString for NumVal

* Update ops worker for stats

* Add sstBufMgr for col data

* Small name refactor

* Update test

* Refactor for all ref logic

* Fix bug in handle for ref logic

* Remove dummy comment

* More readable print info

* Update db append test

* Update db test

* (AOE): Add test utils

* (AOE): Add data tables

* (AOE): Add schema

* (AOE): Update meta info

* (AOE): Add create table db api

* (AOE): Add createtbl memdata ops

* (AOE): Add db create tbl test

* (AOE): Add db append test

* (AOE: Add db concurrent test

* (AOE): Update db test

* (AOE): Fix data race

* (AOE): Update db iter

Add Union Clause, Insert Statement; Change Subquery and StatementSource; Removing some useless directories (#95)

* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* Add configuration related operation interface

* The configuration works

* Add ast transformer

* Add expression and selectstmt transformer

* Remove useless directories(types,session,sessionctx,util); change Subquery,TableExpr; add CaseExpr; add IntervalExpr; add IsTruthExpr; add DefaultVal; add Union Clause; add Insert Statement; “

* (AOE): Add some apis for db

* (AOE): Put layout.ID to common.ID

* (AOE): Add table handles

* (AOE): Update table handles

* (AOE): Update seg test

* (AOE): Optimize handle

* (AOE): Add get blk and seg iter api

* (AOE): Update handle

* Update aoe open

* (AOE): Add open test

* (AOE): Impl db clean stale meta and data

* Migrate aoe code from aoe_prototype

* Remove dependency for mock type

* Fix bug in flushblk

* Fix bug in buffer manager

* Update storage worker

* Impl a temp writer and reader for block

* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* Add configuration related operation interface

* Configuration works

* Add ast transformer

* Add expression and selectstmt transformer

* Add IOPackage module. buffering and byte order need to be tuned;

* Add mysql client protocol.

* Make mysql client protocol works

* add configuration related operation interface

* the configuration works

truncate the result slices

* Replace VPCMPEQQ with VPTERNLOGD in avx512 MIN
* Make use of all SIMD registers