diff --git a/hutool-db/src/main/java/cn/hutool/v7/db/sql/SqlBuilder.java b/hutool-db/src/main/java/cn/hutool/v7/db/sql/SqlBuilder.java
index be219c58a..473a5aa08 100644
--- a/hutool-db/src/main/java/cn/hutool/v7/db/sql/SqlBuilder.java
+++ b/hutool-db/src/main/java/cn/hutool/v7/db/sql/SqlBuilder.java
@@ -25,6 +25,7 @@ import cn.hutool.v7.db.Entity;
 import cn.hutool.v7.db.dialect.DialectName;
 import cn.hutool.v7.db.dialect.impl.OracleDialect;
 
+import java.io.Serial;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -39,6 +40,7 @@ import java.util.List;
  * @author Looly
  */
 public class SqlBuilder implements Builder<String> {
+	@Serial
 	private static final long serialVersionUID = 1L;
 
 	// --------------------------------------------------------------- Static methods start
@@ -191,7 +193,7 @@ public class SqlBuilder implements Builder<String> {
 
 		entity.forEach((field, value) -> {
 			if (StrUtil.isNotBlank(field)) {
-				if (fieldsPart.length() > 0) {
+				if (!fieldsPart.isEmpty()) {
 					// 非第一个参数，追加逗号
 					fieldsPart.append(", ");
 					placeHolder.append(", ");