enh: index support between

tests/script/tsim/stable/tag_filter.sim

@@ -25,12 +25,13 @@ sql insert into db.ctb5 values(now, 5, "2")
 
 sql create table db.ctb6 using db.stb tags(6, "102")
 sql insert into db.ctb6 values(now, 6, "2")
-// int
+
 sql select * from db.stb where t1 = 1
 if $rows != 1 then 
   return -1
 endi
 
+
 sql select * from db.stb where t1 < 1 
 if $rows != 0 then 
   return -=1
@@ -56,4 +57,21 @@ if $rows != 5 then
   return -1
 endi
 
+sql select * from db.stb where t1 between 1 and 1 
+if $rows != 1 then 
+  return -1
+endi
+
+sql select * from db.stb where t1 between 1 and 6 
+if $rows != 6 then 
+  return -1
+endi
+
+sql select * from db.stb where t1 between 1 and 7 
+if $rows != 6 then 
+  return -1
+endi
+
+
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT