restructuring of files. added 2 new methods(Asc, Desc) to field

qry_update.go

@@ -11,23 +11,30 @@ import (
 	"github.com/jackc/pgx/v5"
 )
 
-type updateQry struct {
-	table     string
-	cols      []string
-	condition []Conditioner
-	args      []any
-	debug     bool
-}
-
-func (t *Table) Update() Update {
-	qb := &updateQry{
-		table: t.Name,
-		debug: t.debug,
-		cols:  make([]string, 0, t.FieldCount),
-		args:  make([]any, 0, t.FieldCount),
+type (
+	Update interface {
+		Set(field Field, val any) UpdateClause
+		SetMap(fields map[Field]any) UpdateClause
 	}
-	return qb
-}
+
+	UpdateClause interface {
+		Update
+		Where(cond ...Conditioner) WhereOrExec
+	}
+
+	WhereOrExec interface {
+		Where(cond ...Conditioner) WhereOrExec
+		Execute
+	}
+
+	updateQry struct {
+		table     string
+		cols      []string
+		condition []Conditioner
+		args      []any
+		debug     bool
+	}
+)
 
 func (q *updateQry) Set(field Field, val any) UpdateClause {
 	col := field.Name()