feat:Support MySQL POWER and ROUND function.#456 (#547)

* add round

* [SQL] Support MySQL ROUND and POWER function

* [SQL] Support MySQL ROUND and POWER function

* [SQL] Support MySQL ROUND and POWER function

* [SQL] Support MySQL ROUND and POWER function

* [SQL] Support MySQL ROUND and POWER function

go.mod

@@ -61,6 +61,7 @@ require (
 	github.com/docker/docker v20.10.11+incompatible // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
+	github.com/dubbogo/tools v1.0.9 // indirect
 	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/form3tech-oss/jwt-go v3.2.2+incompatible // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
@@ -109,6 +110,7 @@ require (
 	github.com/sirupsen/logrus v1.8.1 // indirect
 	github.com/soheilhy/cmux v0.1.5-0.20210205191134-5ec6847320e5 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/thinkeridea/go-extend v1.3.2 // indirect
 	github.com/tidwall/match v1.1.1 // indirect
 	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/tmc/grpc-websocket-proxy v0.0.0-20201229170055-e5319fda7802 // indirect