if we write sql with : `select cast(array() as array<varchar(10)>)`
castexpr in fe will call analyze() with `Type.matchExactType(childType, type, true);`
here array type only check contains_null , but should check inner type to make array matchExactType right
ctas with outer join like
```sql
create table a (
id int not null,
name varchar(20) not null
)
distributed by hash(id) buckets 4
properties (
"replication_num"="1"
);
create table b (
id int not null,
age int not null
)
distributed by hash(id) buckets 4
properties (
"replication_num"="1"
);
insert into a values(1, 'ww'), (2, 'zs');
insert into b values(1, 22);
create table c properties("replication_num"="1") as select a.id, a.name, b.age from a left join b on a.id = b.id;
```
the column 'age' in c is not null, but nullable is expected, we fix it by use the nullable mode of the outputs of root plan fragment.
* [Improvement](meta) add default_value column for result of show_variables stmt
* add Changed column to show whether value is modified
* fix code style issue
if we write sql with : select array(1.0,2.0,null, null,2.0)
here will pass arg type with uint8 to be which does not match array() func sign with deicmal, and make be core. so here should cast from be and make null tag to cast decimal type
Iceberg has its own metadata information, which includes count statistics for table data. If the table does not contain equli'ty delete, we can get the count data of the current table directly from the count statistics.
1. should not use ((LogicalPlanAdapter)parsedStmt).getStatementContext().getOriginStatement().originStmt.toLowerCase() as the cache key (do not invoke toLowerCase()), for example: select * from tbl1 where k1 = 'a' is different with select * from tbl1 where k1 = 'A', so the cache should be missed.
2. according to issue 6735 , the cache key should contains all views' s ddl sql (including nested views)
should use getHashJoinConjuncts() and getOtherJoinConjuncts() to get hash and other conjuncts of hash join node instead of categorizing them by checking if it's 'EqualTo' expression
slot bind failed for following querys:
select tpch.lineitem.* from lineitem
select tpch.lineitem.l_partkey from lineitem
the unbound slot is tpch.lineitem.l_partkey, but the bounded slot is default_cluster:tpch.lineitem.l_partkey. They are not matched.
we need to ignore default_cluster: when compare dbName
Problem:
When executing group_concat with order by inside in view, column can not be found when analyze.
Example:
create view if not exists test_view as select group_concat(c1,',' order by c1 asc) from table_group_concat;
select * from test_view;
it will return an error like: "can not find c1 in table_list"
Reason:
When we executing this sql in multi-instance environment, Planner would try to create plan in multi phase
aggregation. And because we analyze test_view independent with tables outside view. So we can not get
table informations inside view.
Solution:
Substitute order by expression of merge aggregation expressions.
