924060929 opened a new pull request, #15671:
URL: https://github.com/apache/doris/pull/15671
# Proposed changes
1. generate lots of aggregate functions
2. support array functions, like `array_union`. we should support array
grammar in the future, e.g. `select [1, 2, 3]`
3. add `checkLegality` function to check the legality of expression before
do type coercion, remove the `ForbiddenMetricTypeArguments`
4. refactor the `NullableAggregateFunction`: distinct is the first
parameter, alwaysNullable is the second parameter; Fix some wrong initialize
order: super(distinct, alwaysNullable) and super(alwaysNullable, distinct)
## Checklist(Required)
1. Does it affect the original behavior:
- [ ] Yes
- [x] No
- [ ] I don't know
5. Has unit tests been added:
- [x] Yes
- [ ] No
- [ ] No Need
6. Has document been added or modified:
- [ ] Yes
- [ ] No
- [x] No Need
7. Does it need to update dependencies:
- [ ] Yes
- [x] No
8. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [x] No
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