diff --git a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/llm/s2ql/LLMRequestService.java b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/llm/s2ql/LLMRequestService.java
index 8a720988f..a610deffd 100644
--- a/chat/core/src/main/java/com/tencent/supersonic/chat/parser/llm/s2ql/LLMRequestService.java
+++ b/chat/core/src/main/java/com/tencent/supersonic/chat/parser/llm/s2ql/LLMRequestService.java
@@ -23,6 +23,7 @@ import com.tencent.supersonic.common.util.JsonUtil;
 import com.tencent.supersonic.knowledge.service.SchemaService;
 import com.tencent.supersonic.semantic.api.model.pojo.SchemaItem;
 import com.tencent.supersonic.semantic.api.model.response.ModelSchemaResp;
+import java.net.URL;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.Comparator;
@@ -134,18 +135,18 @@ public class LLMRequestService {
     }
 
     public LLMResp requestLLM(LLMReq llmReq, Long modelId) {
-        String questUrl = llmParserConfig.getUrl() + llmParserConfig.getQueryToSqlPath();
         long startTime = System.currentTimeMillis();
         log.info("requestLLM request, modelId:{},llmReq:{}", modelId, llmReq);
         try {
+            URL url = new URL(new URL(llmParserConfig.getUrl()), llmParserConfig.getQueryToSqlPath());
             HttpHeaders headers = new HttpHeaders();
             headers.setContentType(MediaType.APPLICATION_JSON);
             HttpEntity<String> entity = new HttpEntity<>(JsonUtil.toString(llmReq), headers);
-            ResponseEntity<LLMResp> responseEntity = restTemplate.exchange(questUrl, HttpMethod.POST, entity,
+            ResponseEntity<LLMResp> responseEntity = restTemplate.exchange(url.toString(), HttpMethod.POST, entity,
                     LLMResp.class);
 
             log.info("requestLLM response,cost:{}, questUrl:{} \n entity:{} \n body:{}",
-                    System.currentTimeMillis() - startTime, questUrl, entity, responseEntity.getBody());
+                    System.currentTimeMillis() - startTime, url.toString(), entity, responseEntity.getBody());
             return responseEntity.getBody();
         } catch (Exception e) {
             log.error("requestLLM error", e);
diff --git a/common/src/main/java/com/tencent/supersonic/common/util/jsqlparser/FunctionAliasReplaceVisitor.java b/common/src/main/java/com/tencent/supersonic/common/util/jsqlparser/FunctionAliasReplaceVisitor.java
index ccc8a6821..3d719bbf1 100644
--- a/common/src/main/java/com/tencent/supersonic/common/util/jsqlparser/FunctionAliasReplaceVisitor.java
+++ b/common/src/main/java/com/tencent/supersonic/common/util/jsqlparser/FunctionAliasReplaceVisitor.java
@@ -15,7 +15,11 @@ public class FunctionAliasReplaceVisitor extends SelectItemVisitorAdapter {
     public void visit(SelectExpressionItem selectExpressionItem) {
         if (selectExpressionItem.getExpression() instanceof Function) {
             Function function = (Function) selectExpressionItem.getExpression();
-            if (Objects.nonNull(selectExpressionItem.getAlias())) {
+            String columnName = SqlParserSelectHelper.getColumnName(function);
+            //1.exist alias. as
+            //2.alias's fieldName not equal. "sum(pv) as pv" cannot be replaced.
+            if (Objects.nonNull(selectExpressionItem.getAlias()) && !selectExpressionItem.getAlias().getName()
+                    .equalsIgnoreCase(columnName)) {
                 aliasToActualExpression.put(selectExpressionItem.getAlias().getName(), function.toString());
                 selectExpressionItem.setAlias(null);
             }
diff --git a/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserAddHelperTest.java b/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserAddHelperTest.java
index 02eb32de5..4b63a7a79 100644
--- a/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserAddHelperTest.java
+++ b/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserAddHelperTest.java
@@ -203,6 +203,18 @@ class SqlParserAddHelperTest {
                 "SELECT department, sum(pv) FROM t_1 WHERE (sum(pv) > 1 AND department = 'HR') AND "
                         + "sys_imp_date = '2023-09-11' GROUP BY department ORDER BY sum(pv) DESC LIMIT 10",
                 replaceSql);
+
+        sql = "select department, sum(pv) as pv from t_1 where sys_imp_date = '2023-09-11' GROUP BY "
+                + "department order by pv desc limit 10";
+        replaceSql = SqlParserReplaceHelper.replaceAlias(sql);
+        replaceSql = SqlParserAddHelper.addAggregateToField(replaceSql, filedNameToAggregate);
+        replaceSql = SqlParserAddHelper.addGroupBy(replaceSql, groupByFields);
+
+        Assert.assertEquals(
+                "SELECT department, sum(pv) AS pv "
+                        + "FROM t_1 WHERE sys_imp_date = '2023-09-11' GROUP BY department "
+                        + "ORDER BY sum(pv) DESC LIMIT 10",
+                replaceSql);
     }
 
     @Test
diff --git a/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserReplaceHelperTest.java b/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserReplaceHelperTest.java
index 505066dde..6fe02a9e3 100644
--- a/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserReplaceHelperTest.java
+++ b/common/src/test/java/com/tencent/supersonic/common/util/jsqlparser/SqlParserReplaceHelperTest.java
@@ -396,6 +396,16 @@ class SqlParserReplaceHelperTest {
                         + "GROUP BY 部门 ORDER BY sum(访问次数) DESC LIMIT 10",
                 replaceSql);
 
+        sql = "select 部门, sum(访问次数) as 访问次数 from 超音数 where "
+                + "(datediff('day', 数据日期, '2023-09-05') <= 3) and 数据日期 = '2023-10-10' "
+                + "group by 部门 order by 访问次数 desc limit 10";
+        replaceSql = SqlParserReplaceHelper.replaceAlias(sql);
+        System.out.println(replaceSql);
+        Assert.assertEquals(
+                "SELECT 部门, sum(访问次数) AS 访问次数 FROM 超音数 WHERE (datediff('day', 数据日期, "
+                        + "'2023-09-05') <= 3) AND 数据日期 = '2023-10-10' GROUP BY 部门 ORDER BY 访问次数 DESC LIMIT 10",
+                replaceSql);
+
     }
 
     private Map<String, String> initParams() {