diff --git a/logger/sql.go b/logger/sql.go
index 1521c1fd..13e5d957 100644
--- a/logger/sql.go
+++ b/logger/sql.go
@@ -28,8 +28,10 @@ func isPrintable(s string) bool {
 	return true
 }
 
+// A list of Go types that should be converted to SQL primitives
 var convertibleTypes = []reflect.Type{reflect.TypeOf(time.Time{}), reflect.TypeOf(false), reflect.TypeOf([]byte{})}
 
+// RegEx matches only numeric values
 var numericPlaceholderRe = regexp.MustCompile(`\$\d+\$`)
 
 // ExplainSQL generate SQL string with given parameters, the generated SQL is expected to be used in logger, execute it might introduce a SQL injection vulnerability
diff --git a/logger/sql_test.go b/logger/sql_test.go
index e4a72748..d9afe393 100644
--- a/logger/sql_test.go
+++ b/logger/sql_test.go
@@ -101,7 +101,6 @@ func TestExplainSQL(t *testing.T) {
 			Vars:          []interface{}{"jinzhu", 1, 0.1753607109, true, []byte("12345"), tt, &tt, nil, "w@g.\"com", myrole, pwd, &js, &es},
 			Result:        fmt.Sprintf(`create table users (name, age, height, actived, bytes, create_at, update_at, deleted_at, email, role, pass, json_struct, example_struct) values ("jinzhu", 1, 0.1753607109, true, "12345", "2020-02-23 11:10:10", "2020-02-23 11:10:10", NULL, "w@g.\"com", "admin", "pass", %v, %v)`, format(jsVal, `"`), format(esVal, `"`)),
 		},
-
 	}
 
 	for idx, r := range results {
diff --git a/migrator/migrator.go b/migrator/migrator.go
index de60f91c..b15a43ef 100644
--- a/migrator/migrator.go
+++ b/migrator/migrator.go
@@ -16,8 +16,17 @@ import (
 	"gorm.io/gorm/schema"
 )
 
+// This regular expression seeks to find a sequence of digits (\d+) among zero or more non-digit characters (\D*),
+// with a possible trailing non-digit character (\D?).
+
+// For example, values that can pass this regular expression are:
+// - "123"
+// - "abc456"
+// -"%$#@789"
 var regFullDataType = regexp.MustCompile(`\D*(\d+)\D?`)
 
+// TODO:? Create const vars for raw sql queries ?
+
 // Migrator m struct
 type Migrator struct {
 	Config
diff --git a/tests/go.mod b/tests/go.mod
index 147d0a79..7a89ee05 100644
--- a/tests/go.mod
+++ b/tests/go.mod
@@ -22,9 +22,9 @@ require (
 	github.com/jackc/pgx/v5 v5.4.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/mattn/go-sqlite3 v1.14.17 // indirect
-	github.com/microsoft/go-mssqldb v1.4.0 // indirect
-	golang.org/x/crypto v0.11.0 // indirect
-	golang.org/x/text v0.11.0 // indirect
+	github.com/microsoft/go-mssqldb v1.5.0 // indirect
+	golang.org/x/crypto v0.12.0 // indirect
+	golang.org/x/text v0.12.0 // indirect
 )
 
 replace gorm.io/gorm => ../