Hotfix/sangshuduo/td 5872 taosdemo stmt improve for master (#7338)

* cherry pick from develop branch.

* cherry pick 54813175

* [TD-5872]<fix>: taosdemo stmt csv perf improve.

* rand func back to early impl.

* fix windows/mac compile error.

* cherry pick from develop branch.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>