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Bug: assertion failed: !column.is_empty(). when using CASE WHEN on empty DataBlock #6682

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leiysky opened this issue Jul 19, 2022 · 2 comments · Fixed by #6685
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Bug: assertion failed: !column.is_empty(). when using CASE WHEN on empty DataBlock #6682

leiysky opened this issue Jul 19, 2022 · 2 comments · Fixed by #6685
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@sundy-li
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A-query Area: databend query C-bug Category: something isn't working

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@leiysky
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leiysky commented Jul 19, 2022

Only can be reproduced in debug build:

select case when number > 1 then 1 when number < 1 then 2 else 1 end from numbers(2) where false;

Which is caused by the debug_assertion here
@leiysky leiysky added C-bug Category: something isn't working A-query Area: databend query labels Jul 19, 2022
@leiysky leiysky mentioned this issue Jul 19, 2022
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@leiysky
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leiysky commented Jul 19, 2022

cc @sundy-li

@leiysky leiysky changed the title Bug: assertion failed: !column.is_empty(). when using CASE WHEN on empty table Bug: assertion failed: !column.is_empty(). when using CASE WHEN on empty DataBlock Jul 19, 2022
@xudong963
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xudong963 commented Jul 19, 2022 •
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#6659 same reason. cc @sundy-li

@sundy-li sundy-li self-assigned this Jul 19, 2022
@sundy-li sundy-li mentioned this issue Jul 19, 2022
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@mergify mergify bot closed this as completed in #6685 Jul 19, 2022
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A-query Area: databend query C-bug Category: something isn't working
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fix(query): remove incorrect debug_assert sundy-li/databend
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@sundy-li @leiysky @xudong963