wgy8283335 opened a new issue #12906:
URL: https://github.com/apache/shardingsphere/issues/12906
## Whether 'EnumerableCalc' and 'EnumerableCorrelate' in Rel Node Tree could
be replaced by Bindable Node
SQL:
```
SELECT t_order_federate.order_id, t_order_federate.user_id FROM
t_order_federate WHERE EXISTS (SELECT * FROM t_user_info WHERE
t_order_federate.user_id = t_user_info.user_id)
```
After optimizing:
```
"EnumerableCalc(expr#0..3=[{inputs}],expr#4=[ISNOTNULL($t3)],proj#0..1=[{exprs}],$condition=[$t4])"
+ "
EnumerableCorrelate(correlation=[$cor0],joinType=[left],requiredColumns=[{1}]) "
+ "
EnumerableInterpreterBindableTableScan(table=[[federate_jdbc,t_order_federate]])
"
+ "
EnumerableInterpreterBindableAggregate(group=[{}],agg#0=[MIN($0)]) "
+ " BindableProject($f0=[true]) "
+ "
BindableTableScan(table=[[federate_jdbc,t_user_info]],filters=[[=(CAST($cor0.user_id):VARCHAR,CAST($0):VARCHAR)]],projects=[[0]])
";
```
related issue #12709.
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