public DbField(char mode, string name, uint typoid, bool def)
{
this.mode = mode;
this.name = name;
this.typoid = typoid;
this.def = def;
type = DbType.GetBaseType(typoid);
}
internal DbField(DbContext s)
{
s.Get(nameof(name), ref name);
s.Get(nameof(typoid), ref typoid);
s.Get(nameof(def), ref def);
s.Get(nameof(notnull), ref notnull);
type = DbType.GetBaseType(typoid);
}