zhangstar333 opened a new pull request, #59123:
URL: https://github.com/apache/doris/pull/59123
### What problem does this PR solve?
iceberg table maybe could have column statistics, so if like agg of
min/max(col)
no need to scan all data files.
```
| 0:VICEBERG_SCAN_NODE(129)
|
| table:
test_iceberg_optimize_min_max_catalog.format_v2.sample_mor_parquet |
| inputSplitNum=41, totalFileSize=283273, scanRanges=41
|
| partition=0/0
|
| cardinality=1000, numNodes=1
|
| pushdown agg=MINMAX
|
| MINMAX: opt/total_splits(32/41)
|
| final projections: id[#0]
|
| final project output tuple id: 1
|
|
|
|
|
|
|
| ========== STATISTICS ==========
|
| planned with unknown column statistics
|
+--------------------------------------------------------------------------------+
52 rows in set (0.05 sec)
mysql> select count() from
test_iceberg_optimize_min_max_catalog.format_v2.sample_mor_parquet$delete_files;
+---------+
| count() |
+---------+
| 9 |
+---------+
1 row in set (0.07 sec)
```
```
10000000 rows in table
mysql> set enable_iceberg_min_max_optimization = false;
Query OK, 0 rows affected (0.01 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.18 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.18 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.18 sec)
mysql> set enable_iceberg_min_max_optimization = true;
Query OK, 0 rows affected (0.00 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.06 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.05 sec)
mysql> select min(sales_id) from t_sales_record;
+---------------+
| min(sales_id) |
+---------------+
| 7001 |
+---------------+
1 row in set (0.05 sec)
```
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [x] 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:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] 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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