test:  add test case for stable query

test: update case for time unit about nano db

test:add case for and or about byte compute

Test: fix the histogram case

test:add testcase in fulltest

feat: add filter to sort operator

test：modify timediff.py and timetruncate.py

os: fix Mac shell error

fix(query): fix substr parameter check 

fix: fix taosd memory leak issue

feat: add filter to aggregate operator

fix(sync): propose batch

TD-16322

feat: sql command 'insert ... select'

test: modify test case

test: adjust check valgrind.sh

fix:  index mem leak

fix(query): copy the column that will not output.

refactor(sync): snapshot strategy