[td-225] update the sim script.

tests/script/general/parser/topbot.sim

@@ -66,6 +66,11 @@ if $row != 100 then
   return -1
 endi
 
+sql select bottom(c1, 100) from tb_stb0
+if $row != 100 then
+  return -1
+endi
+
 sql select last(*) from tb_tb9
 if $row != 1 then
   return -1
@@ -81,4 +86,36 @@ if $row != 0 then
   return -1
 endi
 
+sql create table test(ts timestamp, col1 tinyint, col2 smallint, col3 int, col4 bigint, col5 float, col6 double, col7 bool, col8 binary(20), col9 nchar(20)) tags(loc nchar(20));
+sql create table test1 using test tags('beijing');
+sql insert into test1 values(1537146000000, 1, 1, 1, 1, 0.100000, 0.100000, 0, 'taosdata1', '涛思数据1');
+sql insert into test1 values(1537146000001, 2, 2, 2, 2, 1.100000, 1.100000, 1, 'taosdata2', '涛思数据2');
+sql insert into test1 values(1537146000002, 3, 3, 3, 3, 2.100000, 2.100000, 0, 'taosdata3', '涛思数据3');
+sql insert into test1 values(1537146000003, 4, 4, 4, 4, 3.100000, 3.100000, 1, 'taosdata4', '涛思数据4');
+sql insert into test1 values(1537146000004, 5, 5, 5, 5, 4.100000, 4.100000, 0, 'taosdata5', '涛思数据5');
+sql insert into test1 values(1537146000005, 6, 6, 6, 6, 5.100000, 5.100000, 1, 'taosdata6', '涛思数据6');
+sql insert into test1 values(1537146000006, 7, 7, 7, 7, 6.100000, 6.100000, 0, 'taosdata7', '涛思数据7');
+sql insert into test1 values(1537146000007, 8, 8, 8, 8, 7.100000, 7.100000, 1, 'taosdata8', '涛思数据8');
+sql insert into test1 values(1537146000008, 9, 9, 9, 9, 8.100000, 8.100000, 0, 'taosdata9', '涛思数据9');
+sql insert into test1 values(1537146000009, 10, 10, 10, 10, 9.100000, 9.100000, 1, 'taosdata10', '涛思数据10');
+sql select bottom(col5, 10) from test
+if $rows != 10 then
+  return -1
+endi
+
+if $data01 != 0.10000 then
+  print expect 0.10000 actual: $data01
+  return -1
+endi
+
+if $data11 != 1.10000 then
+  print expect 1.10000 actual: $data11
+  return -1
+endi
+
+if $data21 != 2.10000 then
+  print expect 2.10000 actual: $data21
+  return -1
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file