Julian Hyde created CALCITE-4946:
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Summary: Add method RelBuilder.size()
Key: CALCITE-4946
URL: https://issues.apache.org/jira/browse/CALCITE-4946
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Add method {{{}RelBuilder.size(){}}}, one application of which is to know
whether it is safe to call {{{}peek(){}}}.
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