[TD-10986]<feature>: Add elapsed function.

src/client/src/tscSQLParser.c

@@ -2505,7 +2505,7 @@ int32_t addExprAndResultField(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, int32_t col
   const char* msg13 = "parameter list required";
   const char* msg14 = "third parameter algorithm must be 'default' or 't-digest'";
   const char* msg15 = "parameter is out of range [1, 1000]";
-  const char* msg16 = "elapsed duration should be greater than database precision";
+  const char* msg16 = "elapsed duration should be greater than or equal to database precision";
 
   switch (functionId) {
     case TSDB_FUNC_COUNT: {