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Fix read from Buffer table with empty nested table with different types.#15662

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KochetovNicolai merged 3 commits intomasterfrom
fix-15529
Oct 12, 2020
Merged

Fix read from Buffer table with empty nested table with different types.#15662
KochetovNicolai merged 3 commits intomasterfrom
fix-15529

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@KochetovNicolai KochetovNicolai commented Oct 6, 2020

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  • Bug Fix

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Fix error Cannot add simple transform to empty Pipe which happened while reading from Buffer table which has different structure than destination table. It was possible if destination table returned empty result for query. Fixes #15529

@robot-clickhouse robot-clickhouse added the pr-bugfix Pull request with bugfix, not backported by default label Oct 6, 2020
@nikitamikhaylov nikitamikhaylov self-assigned this Oct 6, 2020
@KochetovNicolai KochetovNicolai merged commit 2a62a91 into master Oct 12, 2020
@KochetovNicolai KochetovNicolai deleted the fix-15529 branch October 12, 2020 11:12
robot-clickhouse pushed a commit that referenced this pull request Oct 12, 2020
robot-clickhouse pushed a commit that referenced this pull request Oct 12, 2020
robot-clickhouse pushed a commit that referenced this pull request Oct 12, 2020
KochetovNicolai added a commit that referenced this pull request Oct 15, 2020
Backport #15662 to 20.8: Fix read from Buffer table with empty nested table with different types.
KochetovNicolai added a commit that referenced this pull request Oct 15, 2020
Backport #15662 to 20.9: Fix read from Buffer table with empty nested table with different types.
KochetovNicolai added a commit that referenced this pull request Oct 15, 2020
Backport #15662 to 20.10: Fix read from Buffer table with empty nested table with different types.
robot-clickhouse pushed a commit that referenced this pull request Oct 15, 2020
KochetovNicolai added a commit that referenced this pull request Oct 16, 2020
Backport #15662 to 20.7: Fix read from Buffer table with empty nested table with different types.
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After upgrade from 20.3 to 20.8 Engine=Buffer raise Code: 49. DB::Exception: Cannot add simple transform to empty Pipe

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