qphien commented on pull request #1495:
URL: https://github.com/apache/iceberg/pull/1495#issuecomment-699936582
I think it is necessary to add a converter to transform Hive DDL schema to
iceberg schema instead of specifying iceberg schema in TBLPROPERTIES. Maybe we
can use
```xml
// Managed Table
CREATE TABLE icebergTable (id int, day string)
STORED BY 'org.apache.iceberg.mr.hive.HiveIcebergStorageHandler'
TBLPROPERTIES('iceberg.mr.table.partition.spec'='day:day')
// External Table
CREATE TABLE icebergTable (id int, day string)
STORED BY 'org.apache.iceberg.mr.hive.HiveIcebergStorageHandler'
LOCATION 'hdfs://path/to/table'
TBLPROPERTIES('iceberg.mr.table.partition.spec'='id:identity')
```
to create managed/external table, `iceberg.mr.table.partition.spec` can be
used to specify partition name and transform type.
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