refactor(sync): modify config file len

fix(query): fix bug in descending order scan in lastblock.

feat(stream): steam state window delete result

fix: fix memory leak issue

release: merge from main to 3.0

* fix(driver): jdbc sample for 3.0

* fix: drop table if exists

* test: valgrind case
Co-authored-by: NShengliang Guan <slguan@taosdata.com>
Co-authored-by: Shuduo Sang <sangshuduo@gmail.com>

fix(query): add one more condition check when merge file block and last block.

fix(query): add one more condition check when merge file block

test: valgrind case

docs: merge CONTRIBUTING files from develop branch

fix leakage in `SFillLogicNode`

Update 14-stream.md

docs(stream)

docs(stream)

docs: merge from 3.0 to main

release: merge from 3.0 to main