From b53adf66cb6ac40464893863e5af8c91f5c0c5fb Mon Sep 17 00:00:00 2001
From: xgfone <xgfone@126.com>
Date: Fri, 21 Jun 2024 17:02:04 +0800
Subject: [PATCH] add the Exist method for Operation

---
 dml_operation.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dml_operation.go b/dml_operation.go
index 2f86eee..debf0be 100644
--- a/dml_operation.go
+++ b/dml_operation.go
@@ -274,3 +274,10 @@ func (o Operation[T]) CountDistinct(field string, conds ...op.Condition) (total
 	err = o.Select(CountDistinct(field)).Where(conds...).Where(op.IsNotDeletedCond).BindRow(&total)
 	return
 }
+
+func (o Operation[T]) Exist(conds ...op.Condition) (exist bool, err error) {
+	var id int
+	err = o.Select(op.KeyId.Key).Where(conds...).Where(op.IsNotDeletedCond).BindRow(&id)
+	exist, err = CheckErrNoRows(err)
+	return
+}