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https://issues.apache.org/jira/browse/SPARK-20067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li updated SPARK-20067:
----------------------------
Description:
We should unify and clean up the outputs of `DESC EXTENDED/FORMATTED` and `SHOW
TABLE EXTENDED` by moving the logics into the Catalog interface. The output
formats are improved. We also add the missing attributes. It impacts the DDL
commands like `SHOW TABLE EXTENDED`, `DESC EXTENDED` and `DESC FORMATTED`.
In addition, by following what we did in Dataset API `printSchema`, we can use
`treeString` to show the schema in the more readable way.
was:
Currently, we are using {{sql}} to print the schema. To make the schema more
readable, we should use {{treeString}}, like what we did in Dataset API
{{printSchema}}
Below is the current way:
{noformat}
Schema: STRUCT<`a`: STRING (nullable = true), `b`: INT (nullable = true), `c`:
STRING (nullable = true), `d`: STRING (nullable = true)>
{noformat}
After the change, it should look like
{noformat}
Schema: root
|-- a: string (nullable = true)
|-- b: integer (nullable = true)
|-- c: string (nullable = true)
|-- d: string (nullable = true)
{noformat}
> Use treeString to print out the table schema for CatalogTable
> -------------------------------------------------------------
>
> Key: SPARK-20067
> URL: https://issues.apache.org/jira/browse/SPARK-20067
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.1.0
> Reporter: Xiao Li
> Assignee: Xiao Li
>
> We should unify and clean up the outputs of `DESC EXTENDED/FORMATTED` and
> `SHOW TABLE EXTENDED` by moving the logics into the Catalog interface. The
> output formats are improved. We also add the missing attributes. It impacts
> the DDL commands like `SHOW TABLE EXTENDED`, `DESC EXTENDED` and `DESC
> FORMATTED`.
> In addition, by following what we did in Dataset API `printSchema`, we can
> use `treeString` to show the schema in the more readable way.
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