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Provide monotonicity info for toUnixTimestamp64* (#44116)

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* impl

* fix
This commit is contained in:
Nikita Taranov 2023-01-02 16:34:06 +01:00 committed by GitHub
parent 509fd873ec
commit 563b27f648
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3 changed files with 29 additions and 0 deletions
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7
src/Functions/FunctionUnixTimestamp64.h
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@ -84,6 +84,13 @@ public:
return res_column; return res_column;
} }
bool hasInformationAboutMonotonicity() const override { return true; }
Monotonicity getMonotonicityForRange(const IDataType & /*type*/, const Field & /*left*/, const Field & /*right*/) const override
{
return {.is_monotonic = true, .is_always_monotonic = true};
}
}; };

1
tests/queries/0_stateless/02499_monotonicity_toUnixTimestamp64.reference Normal file
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@ -0,0 +1 @@
1

21
tests/queries/0_stateless/02499_monotonicity_toUnixTimestamp64.sh Executable file
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@ -0,0 +1,21 @@
#!/usr/bin/env bash
# shellcheck disable=SC2154
unset CLICKHOUSE_LOG_COMMENT
CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
# shellcheck source=../shell_config.sh
. "$CURDIR"/../shell_config.sh
$CLICKHOUSE_CLIENT -q "create table t(ts DateTime64) engine=MergeTree order by ts as select * from numbers_mt(1e6);"
max_block_size=8192
query_id="${CLICKHOUSE_DATABASE}_02499_$RANDOM$RANDOM"
$CLICKHOUSE_CLIENT --query_id="$query_id" -q "select ts from t order by toUnixTimestamp64Nano(ts) limit 10 format Null settings max_block_size = $max_block_size, optimize_read_in_order = 1;"
$CLICKHOUSE_CLIENT -q "system flush logs;"
$CLICKHOUSE_CLIENT --param_query_id="$query_id" -q "select read_rows <= $max_block_size from system.query_log where event_date >= yesterday() and query_id = {query_id:String} and type = 'QueryFinish';"