feat: support oracle :N dynamic parameters (#1552)

* chore:use struct pointer

* feat: support oracle :N dynamic parameters

* Update utils.go

* Update utils.go

* Update utils.go

pg argIndex will not always go up

* Update utils_test.go

* Keep the original

* Update utils_test.go

core/stores/sqlx/bulkinserter.go

@@ -25,6 +25,7 @@ type (
 
 	// A BulkInserter is used to batch insert records.
 	// Postgresql is not supported yet, because of the sql is formated with symbol `$`.
+	// Oracle is not supported yet, because of the sql is formated with symbol `:`.
 	BulkInserter struct {
 		executor *executors.PeriodicalExecutor
 		inserter *dbInserter