Execute ALTER TABLE every time when use AutoMigrate

[lansi951]

GORM Playground Link

Description

Since 1.0.3 version, Execute ALTER TABLE id column every time when use AutoMigrate.
Until 1.0.2 version, did not execute duplicate migrate on once migrated column.

2020/12/18 17:01:34 /go/pkg/mod/gorm.io/driver/mysql@v1.0.3/migrator.go:83 SLOW SQL >= 200ms
[215.581ms] [rows:0] ALTER TABLE `...` MODIFY COLUMN `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT

model setting

type Model struct {
	ID        int       `gorm:"type:INT(10) UNSIGNED NOT NULL AUTO_INCREMENT;primaryKey"`
	...
}