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22.8 Backport of #44469 Don't execute and/or/if/multiIf on LowCardinality dictionary #283

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Enmk
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@Enmk Enmk commented Jun 28, 2023

Changelog category (leave one):

  • Bug Fix (user-visible misbehavior in an official stable release)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Don't execute and/or/if/multiIf on LowCardinality dictionary, so the result type cannot be LowCardinality. It could lead to error Illegal column ColumnLowCardinality in some cases. (ClickHouse#44469 by @Avogar)

Don't execute and/or/if/multiIf on LowCardinality dictionary
@Enmk Enmk merged commit 1611262 into customizations/22.8.18 Jun 30, 2023
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2 participants