Taeyun Kim

@eleanorjboyd I think remote-ssh console log is not necessary. It's just a downloading problem. Vscode server update stuck on downloading the update file. I tried downloading the update file manually...

Using setClob() also fixes Oracle's MERGE INTO statement problem. When a Clob column is used in MERGE INTO statement, 'java.sql.SQLRecoverableException: No more data to read from socket' error occurs, while...

@harawata Sorry, it will take too much time for me. (My knowledge about MyBatis development is severely limited)

Hi, I think `DFField::qualified_name()` is another performance bottleneck. For a simple SELECT many-columns query for a table that has 3617 columns, the function took 73% of the total planning time....

I've applied the precomputed qualified_name I've mentioned above and the btree draft by @oleggator to DataFusion 31.0.0, then ran valgrind with a simple SELECT many-columns query for a table that...

> You can try to put it behind a `Arc` to make the cloning faster? I've additionally changed the type of the precomputed qualified_name from `String` to `Arc` after the...

I've tried to optimize the logical planning and optimization routines. As a result, for a wide aggregation query, the logical planning + optimization time was reduced from 49 seconds to...

@alamb I may not be able to make PRs myself. Maybe other contributors can make PRs based on my report. And I'd like to hear other's opinions and test results...

In my (humble, may be wrong) opinion, DataFusion planning code may have the following performance problems. 1. `LogicalPlan` (and maybe other modules) does the same operation over and over again...

@alamb I've read the discussions you shared. Thank you. Since I'm not quite proficient at Rust, I might not be able to add a useful comment there. However, I do...