gvvinblade commented on a change in pull request #8380:
URL: https://github.com/apache/ignite/pull/8380#discussion_r511111879
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File path:
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/rule/logical/LogicalOrToUnionRule.java
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@@ -63,7 +61,7 @@ private LogicalOrToUnionRule(Class<LogicalFilter> clazz,
String desc) {
List<RexNode> operands = RelOptUtil.disjunctions(dnf);
- if (operands.size() != 2)
+ if (operands.size() != 2 ||
RexUtil.find(SqlKind.IS_NULL).anyContain(operands))
Review comment:
this fix isn't the best one, but we need a way to detect somehow a
filter what is a result of previous rule call, otherwise we'll have infinity
rule match queue. And I have no idea how we would write a specific test for it
(a planer plans a query in finite number of steps, it means a condition works)
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