From ca4fcb94c0316294a9518590b548779ca36147c0 Mon Sep 17 00:00:00 2001
From: a631807682 <631807682@qq.com>
Date: Thu, 22 Sep 2022 12:06:54 +0800
Subject: [PATCH] perf: check type

---
 migrator/migrator.go | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/migrator/migrator.go b/migrator/migrator.go
index 0cc78ca7..29c0c00c 100644
--- a/migrator/migrator.go
+++ b/migrator/migrator.go
@@ -411,12 +411,18 @@ func (m Migrator) MigrateColumn(value interface{}, field *schema.Field, columnTy
 	if !field.PrimaryKey {
 		// check type
 		var isSameType bool
-		aliases := m.DB.Migrator().GetTypeAliases(realDataType)
-		aliases = append(aliases, realDataType)
-		for _, alias := range aliases {
-			if strings.HasPrefix(fullDataType, alias) {
-				isSameType = true
-				break
+		if strings.HasPrefix(fullDataType, realDataType) {
+			isSameType = true
+		}
+
+		// check type aliases
+		if !isSameType {
+			aliases := m.DB.Migrator().GetTypeAliases(realDataType)
+			for _, alias := range aliases {
+				if strings.HasPrefix(fullDataType, alias) {
+					isSameType = true
+					break
+				}
 			}
 		}