Qi Chen ef2fdb79bb [Improvement](parquet-reader) Optimize and refactor parquet reader to improve performance. (#16818) ...

Optimize and refactor parquet reader to improve performance.
- Improve 2x performance for small dict string by aligned copying.
- Refactor code to decrease condition(if) checking.
- Don't call skip(0).
- Don't read page index if no condition.

**ssb-flat-100**: (single-machine, single-thread)
| Query        | before opt           | after opt  |
| ------------- |:-------------:| ---------:|
| SELECT count(lo_revenue) FROM lineorder_flat       | 9.23   | 9.12 |
| SELECT count(lo_linenumber) FROM lineorder_flat | 4.50    | 4.36 |
| SELECT count(c_name) FROM lineorder_flat             | 18.22 | 17.88| 
| **SELECT count(lo_shipmode) FROM lineorder_flat**     |**10.09** | **6.15**|

2023-02-20 11:42:29 +08:00

..

aggregate_functions

[Enchancement](function) remove unused params on aggregate function (#16886)

2023-02-20 11:08:45 +08:00

columns

[Improvement](parquet-reader) Optimize and refactor parquet reader to improve performance. (#16818)

2023-02-20 11:42:29 +08:00

common

[Opt](Hash) Deduce virtual function call is null at in single nullable column (#16650)

2023-02-14 08:44:12 +08:00

core

[WIP](dynamic-table) support dynamic schema table (#16335)

2023-02-11 13:37:50 +08:00

data_types

[Feature](map-type) Support stream load and fix some bugs for map type (#16776)

2023-02-19 15:11:54 +08:00

exec

[Improvement](parquet-reader) Optimize and refactor parquet reader to improve performance. (#16818)

2023-02-20 11:42:29 +08:00

exprs

[Enchancement](function) remove unused params on aggregate function (#16886)

2023-02-20 11:08:45 +08:00

functions

[Enchancement](function) remove unused params on aggregate function (#16886)

2023-02-20 11:08:45 +08:00

io

[WIP](dynamic-table) support dynamic schema table (#16335)

2023-02-11 13:37:50 +08:00

json

[improvement](lock raii) use raii to lock and unlock (#16652)

2023-02-13 14:06:36 +08:00

jsonb

[Improve](row-store) support row cache (#16263)

2023-02-06 11:16:39 +08:00

olap

[bugfix](topn) fix topn read_orderby_key_columns nullptr (#16896)

2023-02-19 23:28:33 +08:00

runtime

[Feature](map-type) Support stream load and fix some bugs for map type (#16776)

2023-02-19 15:11:54 +08:00

sink

[Feature](map-type) Support stream load and fix some bugs for map type (#16776)

2023-02-19 15:11:54 +08:00

utils

[DecimalV3](opt) opt the function of decimalv3 to_string logic (#16427)

2023-02-07 13:28:07 +08:00

CMakeLists.txt

[Improvement](parquet-reader) Optimize and refactor parquet reader to improve performance. (#16818)

2023-02-20 11:42:29 +08:00