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return 1 topn when to set 0 topn in analyzeOption #49080

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hawkingrei opened this issue Dec 1, 2023 · 0 comments · Fixed by #49068
Closed

return 1 topn when to set 0 topn in analyzeOption #49080

hawkingrei opened this issue Dec 1, 2023 · 0 comments · Fixed by #49068
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severity/moderate sig/planner SIG: Planner type/bug The issue is confirmed as a bug.

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@hawkingrei
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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

run TestOutOfRangeEstimationAfterDelete

add the log like this.

WzGnxI043k

fHuxL6iS34

2. What did you expect to see? (Required)

3. What did you see instead (Required)

it will print this log.

[2023/11/29 16:18:31.775 +08:00] [INFO] [builder.go:331] [done]
[2023/11/29 16:18:31.775 +08:00] [INFO] [builder.go:331] [done]
[2023/11/29 16:18:31.778 +08:00] [INFO] [builder.go:383] [before] [len=1] [topnNum=0]
[2023/11/29 16:18:31.778 +08:00] [INFO] [builder.go:385] [after] [len=1]
[2023/11/29 16:18:31.779 +08:00] [INFO] [builder.go:383] [before] [len=1] [topnNum=0]
[2023/11/29 16:18:31.779 +08:00] [INFO] [builder.go:385] [after] [len=1]

4. What is your TiDB version? (Required)
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severity/moderate sig/planner SIG: Planner type/bug The issue is confirmed as a bug.
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*: fix return 1 topn when to set 0 topn in analyzeOption hawkingrei/tidb
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@hawkingrei