From e1fbeb935d039ee3106b00d4aca7976eed13a620 Mon Sep 17 00:00:00 2001
From: u <u@a.com>
Date: Thu, 16 Feb 2023 15:28:31 +0800
Subject: [PATCH] 'fix'

---
 builder2.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/builder2.go b/builder2.go
index 1757a22..25c43a5 100644
--- a/builder2.go
+++ b/builder2.go
@@ -248,6 +248,9 @@ func toWhereSql(where interface{}) (string, error) {
 					if whereSql == "" && (w.String() == "and" || w.String() == "or") {
 						operator = w.String()
 					} else {
+						if w.String() == "" {
+							continue
+						}
 						ws = append(ws, w.String())
 					}
 				} else {
@@ -255,6 +258,9 @@ func toWhereSql(where interface{}) (string, error) {
 					if err != nil {
 						return "", err
 					}
+					if newExp == "" {
+						continue
+					}
 					ws = append(ws, newExp)
 				}
 
@@ -316,6 +322,9 @@ func toWhereSql(where interface{}) (string, error) {
 	} else {
 		whereSql = whereGjson.String()
 	}
+	if strings.TrimSpace(whereSql) == "" {
+		return "", nil
+	}
 	return fmt.Sprintf("( %s )", whereSql), nil
 }