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[Fix](function) Fix wrong decimal of unix_timestamp #55013

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Merged
zclllyybb merged 1 commit into from
Aug 20, 2025
Merged

[Fix](function) Fix wrong decimal of unix_timestamp #55013

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10 changes: 5 additions & 5 deletions be/src/vec/functions/function_timestamp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@
#include "vec/columns/column_string.h"
#include "vec/columns/column_vector.h"
#include "vec/common/assert_cast.h"
#include "vec/common/int_exp.h"
#include "vec/common/pod_array_fwd.h"
#include "vec/common/string_ref.h"
#include "vec/core/block.h"
Expand Down Expand Up @@ -672,11 +673,10 @@ struct UnixTimeStampDateImpl {
DCHECK(valid);

auto [sec, ms] = trim_timestamp(timestamp, NewVersion);
auto ms_str = std::to_string(ms).substr(0, scale);
if (ms_str.empty()) {
ms_str = "0";
}
col_result_data[i] = Decimal64::from_int_frac(sec, std::stoll(ms_str), scale).value;
col_result_data[i] =
Decimal64::from_int_frac(
sec, ms / static_cast<int64_t>(std::pow(10, 6 - scale)), scale)
.value;
}
block.replace_by_position(result, std::move(col_result));
}
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2 changes: 1 addition & 1 deletion ...che/doris/nereids/trees/expressions/functions/executable/DateTimeExtractAndTransform.java
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Expand Up @@ -650,7 +650,7 @@ private static String getTimestamp(LocalDateTime dateTime) {
if (duration.getNano() == 0) {
return String.valueOf(duration.getSeconds());
} else {
return duration.getSeconds() + "." + (duration.getNano() / 1000);
return duration.getSeconds() + "." + String.format("%06d", duration.getNano() / 1000);
}
}

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6 changes: 6 additions & 0 deletions regression-test/data/nereids_p0/sql_functions/datetime_functions/test_date_function.out
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Expand Up @@ -375,6 +375,12 @@ February
-- !sql_ustamp9 --
253402185599

-- !sql_ustamp10 --
1447381219.00001

-- !sql_ustamp11 --
1447381219.012000

-- !sql --
0

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9 changes: 7 additions & 2 deletions regression-test/suites/nereids_p0/sql_functions/datetime_functions/test_date_function.groovy
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Expand Up @@ -387,8 +387,13 @@ suite("test_date_function") {
qt_sql_ustamp7 """ select unix_timestamp(cast('2007-11-30 10:30:19.123456' as datetimev2(4))) """
qt_sql_ustamp8 """ SELECT UNIX_TIMESTAMP('9999-12-30 23:59:59.999'); """
qt_sql_ustamp9 """ SELECT UNIX_TIMESTAMP('9999-12-30 23:59:59'); """
check_fold_consistency("UNIX_TIMESTAMP('9999-12-30 23:59:59.999')")
check_fold_consistency("UNIX_TIMESTAMP('9999-12-30 23:59:59')")
qt_sql_ustamp10 """ select UNIX_TIMESTAMP('2015-11-13 10:20:19.000010'); """
qt_sql_ustamp11 """ select UNIX_TIMESTAMP(cast('2015-11-13 10:20:19.012' as datetime(6))); """
check_fold_consistency(" UNIX_TIMESTAMP('9999-12-30 23:59:59.999')")
check_fold_consistency(" UNIX_TIMESTAMP('9999-12-30 23:59:59')")
check_fold_consistency(" UNIX_TIMESTAMP('2015-11-13 10:20:19.000010')")
check_fold_consistency(" UNIX_TIMESTAMP(cast('2015-11-13 10:20:19.000' as datetime(6)))")
check_fold_consistency(" UNIX_TIMESTAMP(cast('2015-11-13 10:20:19.012' as datetime(6)))")
// these two functions may return different value if we call it in different time. so dont use testFoldConst here
sql "set debug_skip_fold_constant=true;"
sql "SELECT UNIX_TIMESTAMP(current_timestamp()) AS unix_timestamp;"
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