diff --git a/be/src/vec/functions/array/function_array_constructor.cpp b/be/src/vec/functions/array/function_array_constructor.cpp index af64027ec298f6..6a26725ac9d00d 100644 --- a/be/src/vec/functions/array/function_array_constructor.cpp +++ b/be/src/vec/functions/array/function_array_constructor.cpp @@ -36,6 +36,7 @@ #include "vec/data_types/data_type.h" #include "vec/data_types/data_type_array.h" #include "vec/data_types/data_type_nullable.h" +#include "vec/data_types/data_type_number.h" #include "vec/functions/function.h" #include "vec/functions/simple_function_factory.h" @@ -59,11 +60,14 @@ class FunctionArrayConstructor : public IFunction { bool use_default_implementation_for_nulls() const override { return false; } - size_t get_number_of_arguments() const override { return 1; } + size_t get_number_of_arguments() const override { return 0; } DataTypePtr get_return_type_impl(const DataTypes& arguments) const override { - DCHECK(!arguments.empty()) - << "function: " << get_name() << ", arguments should not be empty"; + // we accept with empty argument, like array(), which will be treated as array(UInt8) + if (arguments.empty()) { + return std::make_shared( + make_nullable(std::make_shared())); + } return std::make_shared(make_nullable(remove_nullable(arguments[0]))); } diff --git a/regression-test/data/nereids_function_p0/scalar_function/Array.out b/regression-test/data/nereids_function_p0/scalar_function/Array.out index bf55a289cedd83..bc99cd9c386933 100644 --- a/regression-test/data/nereids_function_p0/scalar_function/Array.out +++ b/regression-test/data/nereids_function_p0/scalar_function/Array.out @@ -14445,3 +14445,9 @@ true ["2012-03-11 11:10:11", "2012-03-11 11:10:21"] ["2012-03-12 12:11:12", "2012-03-12 12:11:23"] +-- !array_empty_fe -- +[] + +-- !array_empty_be -- +[] + diff --git a/regression-test/suites/nereids_function_p0/scalar_function/Array.groovy b/regression-test/suites/nereids_function_p0/scalar_function/Array.groovy index a786b9304388f4..5957ced51af928 100644 --- a/regression-test/suites/nereids_function_p0/scalar_function/Array.groovy +++ b/regression-test/suites/nereids_function_p0/scalar_function/Array.groovy @@ -1276,4 +1276,9 @@ suite("nereids_scalar_fn_Array") { qt_sequence_datetime_hour """select sequence(kdtmv2s1, date_add(kdtmv2s1, interval kint-3 hour), interval kint hour) from fn_test order by kdtmv2s1;""" qt_sequence_datetime_minute """select sequence(kdtmv2s1, date_add(kdtmv2s1, interval kint+1 minute), interval kint minute) from fn_test order by kdtmv2s1;""" qt_sequence_datetime_second """select sequence(kdtmv2s1, date_add(kdtmv2s1, interval kint second), interval kint-1 second) from fn_test order by kdtmv2s1;""" + + // with array empty + qt_array_empty_fe """select array()""" + sql """ set debug_skip_fold_constant=true; """ + qt_array_empty_be """select array()""" }