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Posted to issues@paimon.apache.org by "tsreaper (via GitHub)" <gi...@apache.org> on 2024/12/02 07:55:03 UTC
[PR] [docs] Add document for nested column evolution [paimon]
tsreaper opened a new pull request, #4619:
URL: https://github.com/apache/paimon/pull/4619
### Purpose
This PR adds document for nested column evolution in Flink and Spark.
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Re: [PR] [docs] Add document for nested column evolution [paimon]
Posted by "JingsongLi (via GitHub)" <gi...@apache.org>.
JingsongLi commented on code in PR #4619:
URL: https://github.com/apache/paimon/pull/4619#discussion_r1865386411
##########
docs/content/flink/sql-alter.md:
##########
@@ -78,6 +78,10 @@ If you use object storage, such as S3 or OSS, please use this syntax carefully,
The following SQL adds two columns `c1` and `c2` to table `my_table`.
+{{< hint info >}}
+Flink SQL does not support adding nested columns. To add a column in a row type, see [Changing Column Type](#changing-column-type).
Review Comment:
If you want to add a column in a row type, see....
##########
docs/content/flink/sql-alter.md:
##########
@@ -99,6 +103,10 @@ otherwise this operation may fail, throws an exception like `The following colum
ALTER TABLE my_table DROP (c1, c2);
```
+{{< hint info >}}
+Flink SQL does not support dropping nested columns. To drop a column in a row type, see [Changing Column Type](#changing-column-type).
Review Comment:
If you want to drop a column in a row type, see....
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Re: [PR] [docs] Add document for nested column evolution [paimon]
Posted by "JingsongLi (via GitHub)" <gi...@apache.org>.
JingsongLi merged PR #4619:
URL: https://github.com/apache/paimon/pull/4619
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