[TD-1765] add test cases.

tests/script/general/parser/groupby.sim

@@ -533,6 +533,51 @@ if $data03 != 99.000000000 then
   return -1
 endi
 
+print ============>td-1765
+sql select percentile(c4, 49),min(c4),max(c4),avg(c4),stddev(c4) from group_tb0  group by c8;
+if $rows != 100 then
+  return -1
+endi
+
+if $data00 != 4851.000000000 then
+  return -1
+endi
+
+if $data01 != 0 then
+  return -1
+endi
+
+if $data02 != 9900 then
+  return -1
+endi
+
+if $data03 != 4950.000000000 then
+  return -1
+endi
+
+if $data04 != 2886.607004772 then
+  return -1
+endi
+
+if $data10 != 4852.000000000 then
+  return -1
+endi
+
+if $data11 != 1 then
+  return -1
+endi
+
+if $data12 != 9901 then
+  return -1
+endi
+
+if $data13 != 4951.000000000 then
+  return -1
+endi
+
+if $data14 != 2886.607004772 then
+  return -1
+endi
 
 #=========================== group by multi tags ======================
 sql create table st (ts timestamp, c int) tags (t1 int, t2 int, t3 int, t4 int);