Yu Xu created CALCITE-7472:
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Summary: Arrow adapter should support like operator push down
Key: CALCITE-7472
URL: https://issues.apache.org/jira/browse/CALCITE-7472
Project: Calcite
Issue Type: Improvement
Components: arrow-adapter
Affects Versions: 1.41.0
Reporter: Yu Xu
Assignee: Yu Xu
Fix For: 1.42.0
Currently Arrow adapter can not push down like operator to filter:
eg:
{code:java}
select \"stringField\ from arrowdatatype where \"stringField\" like '1%'";
{code}
plan is :
{code:java}
PLAN=EnumerableCalc(expr#0=[{inputs}], expr#1=['%2%'], expr#2=[LIKE($t0, $t1)],
stringField=[$t0], $condition=[$t2])\n ArrowToEnumerableConverter\n
ArrowProject(stringField=[$3])\n
ArrowTableScan(table=[[ARROW, ARROWDATATYPE]], fields=[[0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15]])\n\n {code}
if we can support like operator push down to ArrowFilter which would be better
and plan should be:
{code:java}
PLAN=ArrowToEnumerableConverter\n
ArrowProject(stringField=[$3])\n
ArrowFilter(condition=[LIKE($3, '%2%')])\n
ArrowTableScan(table=[[ARROW, ARROWDATATYPE]], fields=[[0, 1, 2, 3, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15]])\n\n {code}
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