[bug] Fix crash on generating enum sql builder files when enum contains numeric values.

internal/utils/utils.go

@@ -10,6 +10,7 @@ import (
 	"reflect"
 	"strings"
 	"time"
+	"unicode"
 )
 
 // ToGoIdentifier converts database to Go identifier.
@@ -17,6 +18,15 @@ func ToGoIdentifier(databaseIdentifier string) string {
 	return snaker.SnakeToCamel(replaceInvalidChars(databaseIdentifier))
 }
 
+func ToGoEnumValueIdentifier(enumName, enumValue string) string {
+	enumValueIdentifier := ToGoIdentifier(enumValue)
+	if !unicode.IsLetter([]rune(enumValueIdentifier)[0]) {
+		return ToGoIdentifier(enumName) + enumValueIdentifier
+	}
+
+	return enumValueIdentifier
+}
+
 // ToGoFileName converts database identifier to Go file name.
 func ToGoFileName(databaseIdentifier string) string {
 	return strings.ToLower(replaceInvalidChars(databaseIdentifier))

internal/utils/utils_test.go

@@ -25,6 +25,11 @@ func TestToGoIdentifier(t *testing.T) {
 	assert.Equal(t, ToGoIdentifier("My-Table"), "MyTable")
 }
 
+func TestToGoEnumValueIdentifier(t *testing.T) {
+	assert.Equal(t, ToGoEnumValueIdentifier("enum_name", "enum_value"), "EnumValue")
+	assert.Equal(t, ToGoEnumValueIdentifier("NumEnum", "100"), "NumEnum100")
+}
+
 func TestErrorCatchErr(t *testing.T) {
 	var err error