Hi devs, I opened a ticket CALCITE-5948[1] to solved the questions below.
If we call elements cast in array or map functions such as `array(1, cast(2 as tinyint))` or `map[1, 1, 2, cast(2 as smallint)]` it will be success in validation but failed in runtime with exception. Actually we need a explicit casting if the type of an element in ARRAY/MAP not equals with the derived component type. currently some other issues such as CALCITE-4850[2] also indicate this bug from a concrete case. We should fix this because not only the array function is wrong and also it affects all other array functions. BTW, In the process of solving this issue, I found another issue CALCITE-5960[3] which is related with this. I have fixed it in one PR. Becasuse they are related and can be covered by CALCITE-5948 test cases. If someone has time, please help me to review this PR. thanks. The PR link: https://github.com/apache/calcite/pull/3395 [1] https://issues.apache.org/jira/browse/CALCITE-5948 [2] https://issues.apache.org/jira/browse/CALCITE-4850 [3] https://issues.apache.org/jira/browse/CALCITE-5960 Best Regards, Ran Tao https://github.com/chucheng92
