-- { echoOn }



select 'optimize_trivial_insert_select=0', 'max_insert_threads=0';
optimize_trivial_insert_select=0	max_insert_threads=0
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=0,
    optimize_trivial_insert_select=0,
    max_insert_threads=0; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '0' and
    Settings['optimize_trivial_insert_select'] = '0' and
    Settings['max_insert_threads'] = '0';
2
select count() from testX;
10
select count() from testXA;
10
select count() from testXB;
0
select count() from testXC;
10
select 'optimize_trivial_insert_select=0', 'max_insert_threads=16';
optimize_trivial_insert_select=0	max_insert_threads=16
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=0,
    optimize_trivial_insert_select=0,
    max_insert_threads=16; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '0' and
    Settings['optimize_trivial_insert_select'] = '0' and
    Settings['max_insert_threads'] = '16';
2
select count() from testX;
20
select count() from testXA;
20
select count() from testXB;
0
select count() from testXC;
20
select 'optimize_trivial_insert_select=1', 'max_insert_threads=0';
optimize_trivial_insert_select=1	max_insert_threads=0
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=0,
    optimize_trivial_insert_select=1,
    max_insert_threads=0; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '0' and
    Settings['optimize_trivial_insert_select'] = '1' and
    Settings['max_insert_threads'] = '0';
2
select count() from testX;
30
select count() from testXA;
30
select count() from testXB;
0
select count() from testXC;
30
select 'optimize_trivial_insert_select=1', 'max_insert_threads=16';
optimize_trivial_insert_select=1	max_insert_threads=16
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=0,
    optimize_trivial_insert_select=1,
    max_insert_threads=16; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '0' and
    Settings['optimize_trivial_insert_select'] = '1' and
    Settings['max_insert_threads'] = '16';
2
select count() from testX;
40
select count() from testXA;
40
select count() from testXB;
0
select count() from testXC;
40
select 'optimize_trivial_insert_select=0', 'max_insert_threads=0';
optimize_trivial_insert_select=0	max_insert_threads=0
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=1,
    optimize_trivial_insert_select=0,
    max_insert_threads=0; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '1' and
    Settings['optimize_trivial_insert_select'] = '0' and
    Settings['max_insert_threads'] = '0';
5
select count() from testX;
50
select count() from testXA;
50
select count() from testXB;
0
select count() from testXC;
50
select 'optimize_trivial_insert_select=0', 'max_insert_threads=16';
optimize_trivial_insert_select=0	max_insert_threads=16
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=1,
    optimize_trivial_insert_select=0,
    max_insert_threads=16; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '1' and
    Settings['optimize_trivial_insert_select'] = '0' and
    Settings['max_insert_threads'] = '16';
5
select count() from testX;
60
select count() from testXA;
60
select count() from testXB;
0
select count() from testXC;
60
select 'optimize_trivial_insert_select=1', 'max_insert_threads=0';
optimize_trivial_insert_select=1	max_insert_threads=0
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=1,
    optimize_trivial_insert_select=1,
    max_insert_threads=0; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '1' and
    Settings['optimize_trivial_insert_select'] = '1' and
    Settings['max_insert_threads'] = '0';
5
select count() from testX;
70
select count() from testXA;
70
select count() from testXB;
0
select count() from testXC;
70
select 'optimize_trivial_insert_select=1', 'max_insert_threads=16';
optimize_trivial_insert_select=1	max_insert_threads=16
insert into testX select number from numbers(10) settings
    log_queries=1,
    parallel_view_processing=1,
    optimize_trivial_insert_select=1,
    max_insert_threads=16; -- { serverError FUNCTION_THROW_IF_VALUE_IS_NON_ZERO }
system flush logs;
select arrayUniq(thread_ids) from system.query_log where
    current_database = currentDatabase() and
    type != 'QueryStart' and
    query like '%insert into testX %' and
    Settings['parallel_view_processing'] = '1' and
    Settings['optimize_trivial_insert_select'] = '1' and
    Settings['max_insert_threads'] = '16';
5
select count() from testX;
80
select count() from testXA;
80
select count() from testXB;
0
select count() from testXC;
80