wuwenchi commented on issue #5000:
URL: https://github.com/apache/iceberg/issues/5000#issuecomment-1153572709
> Ideally, they could be stored in PartitionSpec as normal PartitionFields.
Yes, in fact, I save these specified partition keys in PartitionSpec.
When we get the partition keys in creating iceberg table, we create the
corresponding transforms according to function name:
```java
partitionKeys.forEach(name -> {
ComputedColumn computedColumn = computedCols.get(name);
if (computedColumn == null) {
builder.identity(name);
// identity
} else {
...
switch (udfProp.getFuncName()) {
case "years":
builder.year(udfProp.getSrcColumn(), computedColumn.getName());
// transforms
break;
case "months":
builder.month(udfProp.getSrcColumn(), computedColumn.getName());
// transforms
break;
...
}
}
}
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