perf: check type

2022-09-22 12:06:54 +08:00 · 2022-09-22 12:06:54 +08:00 · ca4fcb94c0
commit ca4fcb94c0
parent 311b852cfd
1 changed files with 12 additions and 6 deletions
--- a/migrator/migrator.go
+++ b/migrator/migrator.go
@ -411,14 +411,20 @@ func (m Migrator) MigrateColumn(value interface{}, field *schema.Field, columnTy
 	if !field.PrimaryKey {
 		// check type
 		var isSameType bool
+		if strings.HasPrefix(fullDataType, realDataType) {
+			isSameType = true
+		}
+
+		// check type aliases
+		if !isSameType {
 			aliases := m.DB.Migrator().GetTypeAliases(realDataType)
-		aliases = append(aliases, realDataType)
 			for _, alias := range aliases {
 				if strings.HasPrefix(fullDataType, alias) {
 					isSameType = true
 					break
 				}
 			}
+		}

 		if !isSameType {
 			alterColumn = true