Set is smarter and Update interface is simpler now

README.md

@@ -423,13 +423,12 @@ Just like select where stuff, same code.
 Same as select.
 
 ##### Set
-You can use `Set`, `Sets`, `Update` method to set values.
+You can use `Set` method to set value.
 ```go
-orm.Query[Post]().Where("id", 1).Set("read", true).Update() // UPDATE posts SET read=? WHERE id = ?, [true, 1]
-orm.Query[Post]().Where("id", 1).Sets([2]interface{}{"read", true}).Update() // UPDATE posts SET read=? WHERE id = ?, [true, 1]
-orm.Query[Post]().Where("id", 1).Update(orm.KV{
-"read": true,
-}) // UPDATE posts SET read=? WHERE id = ?, [true, 1]
+orm.Query[Message]().
+  Where("id", 1).
+  Set("read", true, "seen", true).
+  Update() // UPDATE posts SET read=?, seen=? WHERE id = ?, [true, true, 1]
 ```
 
 #### Delete

orm.go

@@ -182,23 +182,23 @@ func Find[T Entity](id interface{}) (T, error) {
 	return *out, nil
 }
 
-func toTuples(obj Entity, withPK bool) [][2]interface{} {
-	var tuples [][2]interface{}
+func toKeyValues(obj Entity, withPK bool) []any {
+	var tuples []any
 	vs := genericValuesOf(obj, withPK)
 	cols := getSchemaFor(obj).Columns(withPK)
 	for i, col := range cols {
-		tuples = append(tuples, [2]interface{}{
-			col,
-			vs[i],
-		})
+		tuples = append(tuples, col, vs[i])
 	}
 	return tuples
 }
 
 // Update given Entity in database.
 func Update(obj Entity) error {
 	s := getSchemaFor(obj)
-	q, args, err := NewQueryBuilder[Entity](s).SetDialect(s.getDialect()).Sets(toTuples(obj, false)...).Where(s.pkName(), genericGetPKValue(obj)).Table(s.Table).ToSql()
+	q, args, err := NewQueryBuilder[Entity](s).
+		SetDialect(s.getDialect()).
+		Set(toKeyValues(obj, false)...).
+		Where(s.pkName(), genericGetPKValue(obj)).Table(s.Table).ToSql()
 
 	if err != nil {
 		return err

query.go

@@ -707,17 +707,20 @@ func (q *QueryBuilder[OUTPUT]) SetUpdate() *QueryBuilder[OUTPUT] {
 	return q
 }
 
-func (q *QueryBuilder[OUTPUT]) Set(name string, value interface{}) *QueryBuilder[OUTPUT] {
+func (q *QueryBuilder[OUTPUT]) Set(keyValues ...any) *QueryBuilder[OUTPUT] {
+	if len(keyValues)%2 != 0 {
+		q.err = fmt.Errorf("when using Set, passed argument count should be even: %w", q.err)
+		return q
+	}
 	q.SetUpdate()
-	q.sets = append(q.sets, [2]interface{}{name, value})
+	for i := 0; i < len(keyValues); i++ {
+		if i != 0 && i%2 == 1 {
+			q.sets = append(q.sets, [2]any{keyValues[i-1], keyValues[i]})
+		}
+	}
 	return q
 }
 
-func (q *QueryBuilder[OUTPUT]) Sets(tuples ...[2]interface{}) *QueryBuilder[OUTPUT] {
-	q.SetUpdate()
-	q.sets = append(q.sets, tuples...)
-	return q
-}
 func (q *QueryBuilder[OUTPUT]) SetDialect(dialect *Dialect) *QueryBuilder[OUTPUT] {
 	q.placeholderGenerator = dialect.PlaceHolderGenerator
 	return q