jinxing64 commented on issue #1485: [CALCITE-2792] Stackoverflow while evaluating filter with large number of OR conditions URL: https://github.com/apache/calcite/pull/1485#issuecomment-539817754 Hi, @hsyuan may I as a question ? This fix replaces `createLeftCall` with `createBalancedCall` and the `SqlNode` converted from `RexNode` will be more 'balanced'. But what if we pass a `SqlNode` of left deep binary tree into `SqlValidatorImpl`, can we avoid the stackoverflow of SqlValidatorImpl#registerSubQueries discussed in JIRA ?
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