planner: reset not null flag when Apply convert to Join #19567
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XuHuaiyu
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LGTM |
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@wshwsh12 merge failed. |
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Signed-off-by: ti-srebot <[email protected]>
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cherry pick to release-4.0 in PR #19628 |
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) Signed-off-by: ti-srebot <[email protected]>
tidb> select (select count(c_int*c_int) from t2 where c_int = t1.c_int) c1, (select count(1) from t2 where c_int = t1.c_int) c2 from t1;
ERROR 1105 (HY000): interface conversion: expression.Expression is *expression.ScalarFunction, not *expression.Column |
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What problem does this PR solve?
Issue Number: close #19504
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