no primary key for col

[lxy1078014075]

internal/statments/values的Value2Interface函数在结构体转换的时候一直报"no primary key for col xxx"的错误
看了一下源码，结构体部分一定会进入!col.SQLType.IsJson()分支，如果把这个分支放在最后，程序就能够正常的进行

[ahojcn]

type User struct {
    Address Address `xorm:"json"`
}

col.SQLType.IsJson() == true

[Sadio94]

type User struct {
    Address Address `xorm:"json"`
}

col.SQLType.IsJson() == true
what is mean?
and where i can read the example?