fix(client): fix potential memory leak.

fix:converity scan defects

test:add tsbs query sql

test:add  failed connection of client and server

test: assert check tools

Revert "fix(query): invalid write when query of ins_columns"

enh: optimize last pruning logic

enh: optimize last pruning logic

fix(tsdb/cache): update nCols of merge tree to avoid assert failed

fix(query): do not update ts window at exchange operator.