* Revert "executor: analyze use NewSelectResult (#4667)"
This reverts commit d1d78b726ba6ba4c79d38ce95252fc41753db02e.
* Revert "table: Speed up the add index operation (#4632)"
This reverts commit d782ce103eea7680f289f6a35576dc9349bb0bb4.
* Revert "*: make prepare stmt retriable when schema is out-dated. (#4669)"
This reverts commit 3dfbf52e64cc0af6039758d169bf133b965f5584.