jorisvandenbossche commented on code in PR #42098:
URL: https://github.com/apache/arrow/pull/42098#discussion_r1637664643
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python/pyarrow/src/arrow/python/ipc.cc:
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@@ -79,7 +79,8 @@ Status
CastingRecordBatchReader::Init(std::shared_ptr<RecordBatchReader> parent,
// Ensure all columns can be cast before succeeding
for (int i = 0; i < num_fields; i++) {
- if (!compute::CanCast(*src->field(i)->type(), *schema->field(i)->type())) {
+ if ((!((src->field(i)->type()->Equals(schema->field(i)->type())))) &&
+ (!compute::CanCast(*src->field(i)->type(),
*schema->field(i)->type()))) {
Review Comment:
> we shouldn't have the T->T cast functions in the table.
We do have that for some, though, like boolean:
https://github.com/apache/arrow/blob/baf4089eaa84b2a5c2cb437f3a249f83577dbc29/cpp/src/arrow/compute/kernels/scalar_cast_boolean.cc#L50-L53
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