amorynan opened a new pull request, #48964: URL: https://github.com/apache/doris/pull/48964
### What problem does this PR solve?
before this pr , we deduce the precision of the function named_struct
containing the decimal type is same with the precision of the decimal type in
select . In this case we can not make right named_struct for multiple decimal
value
like :
```
mysql> create table t01 (a decimal(6,3), d struct<col:bigint,
col1:decimal(7,2)>) properties ("replication_num"="1");
Query OK, 0 rows affected (0.14 sec)
mysql> insert into t01 values (123.321, named_struct('col', 1, 'col1',
345.24));
Query OK, 1 row affected (0.26 sec)
{'label':'label_a2dc895ee7834701_841639ad6d93923f', 'status':'VISIBLE',
'txnId':'9010'}
mysql> select named_struct("col_11", a, "col_12", d) from t01;
+--------------------------------------------------------+
| named_struct("col_11", a, "col_12", d) |
+--------------------------------------------------------+
| {"col_11":123.321, "col_12":{"col":1, "col1":345.240}} |
+--------------------------------------------------------+
1 row in set (0.17 sec)
mysql> insert into t01 values (123.321, named_struct('col', 1, 'col1',
12345.24));
Query OK, 1 row affected (0.17 sec)
{'label':'label_77ed6047f6a6494d_810c26becfd0535c', 'status':'VISIBLE',
'txnId':'9011'}
mysql> select named_struct("col_11", a, "col_12", d) from t01;
ERROR 1105 (HY000): errCode = 2, detailMessage =
(10.16.10.6)[E-255]Arithmetic overflow when converting value 12345.24 from type
Decimal(7, 2) to type Decimal(6, 3)
mysql> desc verbose select named_struct("col_11", a, "col_12", d) from t01;
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Explain String(Nereids Planner)
|
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| PLAN FRAGMENT 0
|
| OUTPUT EXPRS:
|
| named_struct("col_11", a, "col_12", d)[#2]
|
| PARTITION: RANDOM
|
|
|
| HAS_COLO_PLAN_NODE: false
|
|
|
| VRESULT SINK
|
| MYSQL_PROTOCAL
|
|
|
| 0:VOlapScanNode(50)
|
| TABLE: tt.t01(t01), PREAGGREGATION: ON
|
| partitions=1/1 (t01)
|
| tablets=10/10, tabletList=1741751856342,1741751856344,1741751856346
...
|
| cardinality=2, avgRowSize=2955.0, numNodes=1
|
| pushAggOp=NONE
|
| final projections: named_struct('col_11', a[#0], 'col_12', CAST(d[#1]
AS struct<col:bigint,col1:decimalv3(6,3)>))
|
| final project output tuple id: 1
|
| tuple ids: 0
|
|
|
| Tuples:
|
| TupleDescriptor{id=0, tbl=t01}
|
| SlotDescriptor{id=0, col=a, colUniqueId=0, type=decimalv3(6,3),
nullable=true, isAutoIncrement=false, subColPath=null}
|
| SlotDescriptor{id=1, col=d, colUniqueId=1,
type=struct<col:bigint,col1:decimalv3(7,2)>, nullable=true,
isAutoIncrement=false, subColPath=null}
|
|
|
| TupleDescriptor{id=1, tbl=t01}
|
| SlotDescriptor{id=2, col=null, colUniqueId=null,
type=struct<col_11:decimalv3(6,3),col_12:struct<col:bigint,col1:decimalv3(6,3)>>,
nullable=false, isAutoIncrement=false, subColPath=null} |
|
|
|
|
|
```
Issue Number: close #xxx
Related PR: #xxx
Problem Summary:
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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