testdata/workloads/functional-query/queries/QueryTest/iceberg-plain-count-star-optimization.test

====
---- QUERY
create table ice_tbl (
  col_i INT,
  col_s STRING
) partitioned by spec (col_s) stored as iceberg tblproperties ('write.format.default' = 'parquet');
---- RESULTS
'Table has been created.'
====
---- QUERY
select count(*) from ice_tbl;
---- RESULTS
0
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
insert into
  ice_tbl
values
  (1, "odd"),
  (3, "odd"),
  (5, "odd");
show files in ice_tbl;
---- RESULTS
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=odd/.*.0.parq','.*','','$ERASURECODE_POLICY'
---- TYPES
STRING, STRING, STRING, STRING
====
---- QUERY
select count(*) from ice_tbl;
---- RESULTS
3
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
create table ice_tbl_u1 stored as iceberg as select * from ice_tbl;
---- RESULTS
'Inserted 3 row(s)'
====
---- QUERY
select count(*) from ice_tbl_u1;
---- RESULTS
3
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
insert into
  ice_tbl
values
  (2, "even"),
  (4, "even"),
  (6, "even");
show files in ice_tbl;
---- RESULTS
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=even/.*.0.parq','.*','','$ERASURECODE_POLICY'
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=odd/.*.0.parq','.*','','$ERASURECODE_POLICY'
---- TYPES
STRING, STRING, STRING, STRING
====
---- QUERY
select count(*) from ice_tbl;
---- RESULTS
6
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
create table ice_tbl_u2 stored as iceberg as select * from ice_tbl;
---- RESULTS
'Inserted 6 row(s)'
====
---- QUERY
select count(*) from ice_tbl_u2;
---- RESULTS
6
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
insert into
  ice_tbl
values
  (1, "odd"),
  (2, "even");
show files in ice_tbl;
---- RESULTS
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=even/.*.0.parq','.*','','$ERASURECODE_POLICY'
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=even/.*.0.parq','.*','','$ERASURECODE_POLICY'
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=odd/.*.0.parq','.*','','$ERASURECODE_POLICY'
row_regex:'$NAMENODE/test-warehouse/$DATABASE.db/ice_tbl/data/col_s=odd/.*.0.parq','.*','','$ERASURECODE_POLICY'
---- TYPES
STRING, STRING, STRING, STRING
====
---- QUERY
select count(*) from ice_tbl;
---- RESULTS
8
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
select count(*) from ice_tbl for system_time as of now();
---- RESULTS
8
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
set explain_level=3;
explain select count(col_i), count(*) from ice_tbl;
---- RESULTS: VERIFY_IS_SUBSET
'Analyzed query: SELECT count(col_i), CAST(8 AS BIGINT) FROM'
'$DATABASE.ice_tbl'
====
---- QUERY
set explain_level=3;
explain select count(distinct col_i), count(*) from ice_tbl;
---- RESULTS: VERIFY_IS_SUBSET
'Analyzed query: SELECT count(DISTINCT col_i), CAST(8 AS BIGINT) FROM'
'$DATABASE.ice_tbl'
====
---- QUERY
set explain_level=3;
explain select min(col_i), count(*), max(col_i) from ice_tbl;
---- RESULTS: VERIFY_IS_SUBSET
'Analyzed query: SELECT min(col_i), CAST(8 AS BIGINT), max(col_i) FROM'
'$DATABASE.ice_tbl'
====
---- QUERY
set explain_level=3;
explain select 123, count(*), 321 from ice_tbl;
---- RESULTS: VERIFY_IS_SUBSET
'Analyzed query: SELECT CAST(123 AS TINYINT), CAST(8 AS BIGINT), CAST(321 AS'
'SMALLINT)'
====
---- QUERY
# Filtering by a partition column results in Iceberg doing the filtering instead of Impala.
select
  count(*)
from
  ice_tbl
where
  col_s = 'odd';
---- RESULTS
4
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 2
====
---- QUERY
select
  count(*)
from
  ice_tbl
having
  avg(col_i) < 0;
---- RESULTS
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 4
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
select
  count(*)
from
  ice_tbl
group by
  col_s;
---- RESULTS
4
4
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 4
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
select
  count(distinct col_i)
from
  ice_tbl;
---- RESULTS
6
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 4
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
truncate ice_tbl;
---- RESULTS
'Table has been truncated.'
====
---- QUERY
select count(*) from ice_tbl;
---- RESULTS
0
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
create table parq_tbl(col_i INT, col_s STRING) PARTITIONED BY(x INT) STORED AS PARQUET;
---- RESULTS
'Table has been created.'
====
---- QUERY
insert into parq_tbl PARTITION(x = 12340) values (0, "a");
insert into parq_tbl PARTITION(x = 12341) values (1, "b");
insert into parq_tbl PARTITION(x = 12342) values (2, "c");
select count(*) from parq_tbl;
---- RESULTS
3
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 3
====
---- QUERY
select count(*) as c from ice_tbl_u1 union all (select count(*) c from ice_tbl_u2) order by c;
---- RESULTS
3
6
---- TYPES
BIGINT
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
with u1 as (select count(*) from ice_tbl_u1), u2 as (select count(*) from ice_tbl_u2) select * from u1, u2;
---- RESULTS
3,6
---- TYPES
BIGINT,BIGINT
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====
---- QUERY
with u1 as (select count(*) from ice_tbl_u1),
u2 as (select count(*) from ice_tbl_u1 union all (select count(*) from ice_tbl_u2)) select * from u1, u2 order by 1,2;
---- RESULTS
3,3
3,6
---- TYPES
BIGINT,BIGINT
---- RUNTIME_PROFILE
aggregation(SUM, NumRowGroups): 0
aggregation(SUM, NumFileMetadataRead): 0
====