enh: window clause validity check

tests/script/tsim/query/explain.sim

@@ -45,8 +45,8 @@ sql explain select * from information_schema.user_stables;
 sql explain select count(*),sum(f1) from tb1;
 sql explain select count(*),sum(f1) from st1;
 sql explain select count(*),sum(f1) from st1 group by f1;
-sql explain select count(f1) from tb1 interval(1s, 2d) sliding(3s) fill(prev);
-sql explain select min(f1) from st1 interval(1m, 2a) sliding(3n); 
+sql explain select count(f1) from tb1 interval(10s, 2s) sliding(3s) fill(prev);
+sql explain select min(f1) from st1 interval(1m, 2a) sliding(30s); 
 
 print ======== step3 
 sql explain verbose true select * from st1 where -2;
@@ -65,8 +65,8 @@ sql explain analyze select * from information_schema.user_stables;
 sql explain analyze select count(*),sum(f1) from tb1;
 sql explain analyze select count(*),sum(f1) from st1;
 sql explain analyze select count(*),sum(f1) from st1 group by f1;
-sql explain analyze select count(f1) from tb1 interval(1s, 2d) sliding(3s) fill(prev);
-sql explain analyze select min(f1) from st1 interval(3n, 2a) sliding(1n); 
+sql explain analyze select count(f1) from tb1 interval(10s, 2s) sliding(3s) fill(prev);
+sql explain analyze select min(f1) from st1 interval(3m, 2a) sliding(1m); 
 
 print ======== step5 
 sql explain analyze verbose true select ts from st1 where -2;
@@ -78,20 +78,20 @@ sql explain analyze verbose true select * from information_schema.user_stables;
 sql explain analyze verbose true select count(*),sum(f1) from tb1;
 sql explain analyze verbose true select count(*),sum(f1) from st1;
 sql explain analyze verbose true select count(*),sum(f1) from st1 group by f1;
-sql explain analyze verbose true select count(f1) from tb1 interval(1s, 2d) sliding(3s) fill(prev);
+sql explain analyze verbose true select count(f1) from tb1 interval(10s, 2s) sliding(3s) fill(prev);
 sql explain analyze verbose true select ts from tb1 where f1 > 0;
 sql explain analyze verbose true select f1 from st1 where f1 > 0 and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00';
 sql explain analyze verbose true select * from information_schema.user_stables where db_name='db2';
 sql explain analyze verbose true select count(*),sum(f1) from st1 where f1 > 0 and ts > '2021-10-31 00:00:00' group by f1 having sum(f1) > 0;
-sql explain analyze verbose true select min(f1) from st1 interval(3n, 2a) sliding(1n); 
+sql explain analyze verbose true select min(f1) from st1 interval(3m, 2a) sliding(1m); 
 sql explain analyze verbose true select * from (select min(f1),count(*) a from st1 where f1 > 0) where a < 0;
 
 #not pass case
 #sql explain verbose true select count(*),sum(f1) as aa from tb1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' order by aa;
 #sql explain verbose true select * from st1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' order by ts;
 #sql explain verbose true select count(*),sum(f1) from st1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' order by ts;
-#sql explain verbose true select count(f1) from tb1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' interval(1s, 2d) sliding(3s) order by ts;
-#sql explain verbose true select min(f1) from st1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' interval(1m, 2a) sliding(3n)  fill(linear) order by ts;
+#sql explain verbose true select count(f1) from tb1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' interval(10s, 2s) sliding(3s) order by ts;
+#sql explain verbose true select min(f1) from st1 where (f1 > 0 or f1 < -1) and ts > '2020-10-31 00:00:00' and ts < '2021-10-31 00:00:00' interval(1m, 2a) sliding(30s)  fill(linear) order by ts;
 #sql explain select max(f1) from tb1 SESSION(ts, 1s);
 #sql explain select max(f1) from st1 SESSION(ts, 1s);
 #sql explain select * from tb1, tb2 where tb1.ts=tb2.ts;