Hi
Current we got like this in Window#Group if we wrote SQL like `rows between
0 preceding and 2 following`
$3 PRECEDING
$4 FOLLOWING
$3 and $4 is input ref, and we had to find $3 and $4 in Window#constant,
and all digest about Window#Group doesn't replace the ref back to literal,
so it lost the info:
It's a plan in RelOptRuleTest:
LogicalProject(EMPNO=[$0], DEPTNO=[$1], W_COUNT=[$2])
LogicalFilter(condition=[IS NULL($2)])
LogicalWindow(window#0=[window(partition {} order by [] rows
between $2 PRECEDING and $3 PRECEDING aggs [COUNT($0)])])
LogicalProject(EMPNO=[$0], DEPTNO=[$7])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
Regards!
Aron Tao
