} else {
		primarySchemaName := primarySchema.Name
		if primarySchemaName == "" {
			primarySchemaName = relation.FieldSchema.Name
		}

		if len(relation.primaryKeys) > 0 {
			for _, primaryKey := range relation.primaryKeys {
				if f := primarySchema.LookUpField(primaryKey); f != nil {
					primaryFields = append(primaryFields, f)
				}
			}
		} else {
			primaryFields = primarySchema.PrimaryFields
		}

			c.AfterExpression.Build(builder)
		}
	}
}

const (
	PrimaryKey   string = "~~~py~~~" // primary key
	CurrentTable string = "~~~ct~~~" // current table
	Associations string = "~~~as~~~" // associations
)

var (
	currentTable  = Table{Name: CurrentTable}
	PrimaryColumn = Column{Table: CurrentTable, Name: PrimaryKey}
)

// Column quote with name
type Column struct {
	Table string
	Name  string

				}

				if prefix, ok := field.TagSettings["EMBEDDEDPREFIX"]; ok && ef.DBName != "" {
					ef.DBName = prefix + ef.DBName
				}

				if ef.PrimaryKey {
					if !utils.CheckTruth(ef.TagSettings["PRIMARYKEY"], ef.TagSettings["PRIMARY_KEY"]) {
						ef.PrimaryKey = false

						if val, ok := ef.TagSettings["AUTOINCREMENT"]; !ok || !utils.CheckTruth(val) {
							ef.AutoIncrement = false
						}

		t.Fatalf("EN Blog's tags should be cleared")
	}
}

func TestCompositePrimaryKeysAssociations(t *testing.T) {
	type Label struct {
		BookID *uint  `gorm:"primarykey"`
		Name   string `gorm:"primarykey"`
		Value  string
	}

	type Book struct {
		ID     int
		Name   string
		Labels []Label
	}

	DB.Migrator().DropTable(&Label{}, &Book{})

		fkNil[ref.ForeignKey.DBName] = nil

		if ref.OwnPrimaryKey && ref.PrimaryKey != nil {
			ownerPKNames = append(ownerPKNames, ref.PrimaryKey.DBName)
			primaryColumns = append(primaryColumns, clause.Column{Name: ref.PrimaryKey.DBName})
			foreignColumns = append(foreignColumns, clause.Column{Name: ref.ForeignKey.DBName})
		} else if !ref.OwnPrimaryKey && ref.PrimaryKey != nil {
			ownerFKNames = append(ownerFKNames, ref.ForeignKey.DBName)

				schema.FieldsByBindName[bindName] = field

				if v != nil && v.PrimaryKey {
					// remove the existing primary key field
					for idx, f := range schema.PrimaryFields {
						if f.DBName == v.DBName {
							schema.PrimaryFields = append(schema.PrimaryFields[0:idx], schema.PrimaryFields[idx+1:]...)
						}
					}
				}

				if field.PrimaryKey {
					schema.PrimaryFields = append(schema.PrimaryFields, field)
				}

				createTableSQL += "PRIMARY KEY ?,"
				primaryKeys := make([]interface{}, 0, len(stmt.Schema.PrimaryFields))
				for _, field := range stmt.Schema.PrimaryFields {
					primaryKeys = append(primaryKeys, clause.Column{Name: field.DBName})
				}

				values = append(values, primaryKeys)
			}

			for _, idx := range stmt.Schema.ParseIndexes() {

		return
	}

	type Event struct {
		ID  uint `gorm:"primarykey"`
		UID uint32
	}

	type Event1 struct {
		ID  uint   `gorm:"primarykey"`
		UID uint32 `gorm:"not null;autoIncrement"`
	}

	type Event2 struct {
		ID  uint   `gorm:"primarykey"`
		UID uint16 `gorm:"not null;autoIncrement"`
	}

	var err error

Є кілька відмінностей:

* `table=True` каже SQLModel, що це «таблична модель» - вона має представляти **таблицю** в SQL базі даних, а не просто «модель даних» (як будь-який інший звичайний клас Pydantic).

* `Field(primary_key=True)` каже SQLModel, що `id` - це **первинний ключ** у SQL базі даних (більше про первинні ключі в SQL див. у документації SQLModel).

Birkaç fark var:

* `table=True`, SQLModel’e bunun bir *table model* olduğunu söyler; SQL veritabanında bir **table**’ı temsil etmelidir, sadece bir *data model* değildir (diğer normal Pydantic sınıflarında olduğu gibi).

* `Field(primary_key=True)`, SQLModel’e `id`’nin SQL veritabanındaki **primary key** olduğunu söyler (SQL primary key’leri hakkında daha fazlasını SQLModel dokümantasyonunda öğrenebilirsiniz).