fix test cases

tests/script/tsim/parser/function.sim

@@ -821,10 +821,10 @@ sql insert into tm0 values('2015-08-18T00:18:00Z', 2.126) ('2015-08-18T00:24:00Z
 
 sql_error select derivative(ts) from tm0;
 sql_error select derivative(k) from tm0;
-sql select derivative(k, 0, 0) from tm0;
+sql_error select derivative(k, 0, 0) from tm0;
 sql_error select derivative(k, 1, 911) from tm0;
 sql_error select derivative(kx, 1s, 1) from tm0;
-sql select derivative(k, -20s, 1) from tm0;
+sql_error select derivative(k, -20s, 1) from tm0;
 sql select derivative(k, 20a, 0) from tm0;
 sql select derivative(k, 200a, 0) from tm0;
 sql select derivative(k, 999a, 0) from tm0;
@@ -932,7 +932,7 @@ sql insert into t0 values('2020-1-1 1:4:10', 10);
 
 sql insert into t1 values('2020-1-1 1:1:2', 2);
 print ===========================>td-4739
-sql select diff(val) from (select derivative(k, 1s, 0) val from t1);
+sql select diff(val) from (select ts, derivative(k, 1s, 0) val from t1);
 if $rows != 0 then
   return -1
 endi
@@ -1077,4 +1077,4 @@ endi
 if $data11 != NULL then
   print ======data11=$data11
   return -1
-endi
\ No newline at end of file
+endi