HongXing

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@shangyanwen The tianmu engine has default sorting function,while innodb not.

![image](https://user-images.githubusercontent.com/63028664/190962780-b8de2502-d2b4-477d-842e-3a78256a7add.png) So far,Tianmu doesn‘t support optimize function expression yet.

``` else if ((d.op == common::Operator::O_LIKE || d.op == common::Operator::O_NOT_LIKE) && (GetPackType() == common::PackType::STR )) { DEBUG_ASSERT(vc1->IsConst()); types::BString pat; vc1->GetValueString(pat, mit); common::RoughSetValue res = common::RoughSetValue::RS_SOME; // here: check min, max...