Kyligence / ClickHouse

ClickHouse® is a free analytics DBMS for big data
https://clickhouse.com
Apache License 2.0
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Columns of union may be diffferent in type #436

Open shuai-xu opened 1 year ago

shuai-xu commented 1 year ago

Describe what's wrong

When running a sql with join, the colunms from two steams may be different in type, one may be nullable while the other not. When aggregating the two stream, it will mismatch and throw a momory exception.

432 is one of this case.

lgbo-ustc commented 1 year ago

same as https://github.com/Kyligence/ClickHouse/issues/432