diff --git a/src/connector/odbc/src/todbc.c b/src/connector/odbc/src/todbc.c
index 8c5edf19e22792c570dbbf862cb6e4c691013fe8..5180247bd2a6712368d64f6839f0b7a7b382c1b2 100644
--- a/src/connector/odbc/src/todbc.c
+++ b/src/connector/odbc/src/todbc.c
@@ -60,6 +60,7 @@ do {
   snprintf((char*)obj->err.sql_state, sizeof(obj->err.sql_state), "%s", sqlstate);                        \
 } while (0)
 
+
 #define CLR_ERROR(obj)                                                          \
 do {                                                                            \
   obj->err.err_no = TSDB_CODE_SUCCESS;                                          \
@@ -2275,7 +2276,11 @@ static SQLRETURN doSQLGetDiagField(SQLSMALLINT HandleType, SQLHANDLE Handle,
                                    SQLPOINTER DiagInfo, SQLSMALLINT BufferLength,
                                    SQLSMALLINT *StringLength)
 {
-  // if this function is not exported, isql will never call SQLGetDiagRec
+  switch (DiagIdentifier) {
+    case SQL_DIAG_CLASS_ORIGIN: {
+      *StringLength = 0;
+    } break;
+  }
   return SQL_SUCCESS;
 }