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Backport #50585 to 23.5: Fix Log family table return wrong rows count after truncate #50787

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merged 1 commit into from Jun 12, 2023
Merged

Backport #50585 to 23.5: Fix Log family table return wrong rows count after truncate #50787

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2 changes: 2 additions & 0 deletions src/Storages/StorageLog.cpp
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Expand Up @@ -775,6 +775,8 @@ void StorageLog::truncate(const ASTPtr &, const StorageMetadataPtr &, ContextPtr

marks_loaded = true;
num_marks_saved = 0;
total_rows = 0;
total_bytes = 0;
getContext()->dropMMappedFileCache();
}

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2 changes: 2 additions & 0 deletions src/Storages/StorageStripeLog.cpp
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Expand Up @@ -424,6 +424,8 @@ void StorageStripeLog::truncate(const ASTPtr &, const StorageMetadataPtr &, Cont

indices_loaded = true;
num_indices_saved = 0;
total_rows = 0;
total_bytes = 0;
getContext()->dropMMappedFileCache();
}

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2 changes: 2 additions & 0 deletions tests/queries/0_stateless/02771_log_faminy_truncate_count.reference
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@@ -0,0 +1,2 @@
0
0
26 changes: 26 additions & 0 deletions tests/queries/0_stateless/02771_log_faminy_truncate_count.sql
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@@ -0,0 +1,26 @@
DROP TABLE IF EXISTS test_log;
CREATE TABLE test_log
(
`crypto_name` String,
`trade_date` Date
)
ENGINE = Log;

INSERT INTO test_log (crypto_name, trade_date) VALUES ('abc', '2021-01-01'), ('def', '2022-02-02');

TRUNCATE TABLE test_log;
SELECT count() FROM test_log;

DROP TABLE IF EXISTS test_log;
CREATE TABLE test_log
(
`crypto_name` String,
`trade_date` Date
)
ENGINE = StripeLog;

INSERT INTO test_log (crypto_name, trade_date) VALUES ('abc', '2021-01-01'), ('def', '2022-02-02');

TRUNCATE TABLE test_log;
SELECT count() FROM test_log;
DROP TABLE test_log;