Upgrade half or gorm.

code/tool/third/gorm_helper.go

@@ -0,0 +1,18 @@
+package third
+
+import "gorm.io/gorm"
+
+//This is a nil ptr bug in gorm.io/gorm@v1.23.2/migrator/migrator.go:369
+func MysqlMigratorHasColumn(db *gorm.DB, schemaName string, tableName string, columnName string) bool {
+
+	var count int64
+	err := db.Raw(
+		"SELECT count(*) FROM INFORMATION_SCHEMA.columns WHERE table_schema = ? AND table_name = ? AND column_name = ?",
+		schemaName, tableName, columnName,
+	).Row().Scan(&count)
+	if err != nil {
+		panic(err)
+	}
+
+	return count > 0
+}