1. create aggregation table
2. insert some data
3. drop the table and create again
4. modify some parameters for some branch
5. insert some data
6. change the parameters back to its default
For left outer join or full outer join, when build side data is empty, null data is output for build side, but nested column data of nullable column is not properly initialized, which may cause decimal arithmetic overflow
This enhancement shall extend existing logic for SHOW PARTITIONS FROM to include: -
Limit/Offset
Where [partition name only] [equal operator and like operator]
Order by [partition name only]
Issue Number: close#27834
* [regression-test](Variant) Add more cases related to schema changes
And fix bugs about schema change for variant:
fix bug schema change crash on doing schema change with tablet schema that contains extracted columns
If specified, got a column of constant. otherwise an incremental series like it always be.
mysql> select * from numbers("number" = "5", "const_value" = "-123");
+--------+
| number |
+--------+
| -123 |
| -123 |
| -123 |
| -123 |
| -123 |
+--------+
5 rows in set (0.11 sec)
If the original data is：
```sql
+-----------------------------------------------------+
| s_info |
+-----------------------------------------------------+
| {"s_id": 2, "s_name": "nereids", "s_address": "20"} |
| {"s_id": 1, "s_name": "doris", "s_address": "18"} |
+-----------------------------------------------------+
```
In the original logic, the struct type data exported to a csv file format did not contain column names,like
```
{2, "nereids", "20"}
{1, "doris", "18"}
```
This pr do not need to be merged into branch-2.0
refactor:
1. split InsertIntoTableCommand into three sub command
- InsertIntoTableCommand
- InsertOverwriteTableCommand
- BatchInsertIntoTableCommand
feature:
1. support DEFAULT keywords in values list
2. support empty values list
3. support temporary partition
4. support insert into values in txn model
fix:
1. should start transaction before release read lock on target table
* [DNM](decimal) use new way for decimal arithmetic precision promotion
* [improvement](decimal) [DNM](decimal) use new way for decimal arithmetic precision promotion
1. [DNM](decimal) use new way for decimal arithmetic precision promotion
2. throw exception if it overflows for decimal arithmetics
3. throw exception if it overflows when casting among number types
* fix compile error of gcc
* improvement
---------
Co-authored-by: morrySnow <morrysnow@126.com>
q1: "select * from ut_p temporary partitions(tp1) where val > 0"
in q1, temporary partition tp1 is scaned
q2: "select * from ut_p where val > 0"
in q2, temporary partition tp1 is not scaned.
