Xiao Li 51d3c854c5 [SPARK-20067][SQL] Unify and Clean Up Desc Commands Using Catalog Interface ... ### What changes were proposed in this pull request? This PR is to 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. Below is the current way: ``` Schema: STRUCT<`a`: STRING (nullable = true), `b`: INT (nullable = true), `c`: STRING (nullable = true), `d`: STRING (nullable = true)> ``` After the change, it should look like ``` Schema: root |-- a: string (nullable = true) |-- b: integer (nullable = true) |-- c: string (nullable = true) |-- d: string (nullable = true) ``` ### How was this patch tested? `describe.sql` and `show-tables.sql` Author: Xiao Li <gatorsmile@gmail.com> Closes #17394 from gatorsmile/descFollowUp.		2017-04-03 23:30:12 -07:00
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src	[SPARK-20067][SQL] Unify and Clean Up Desc Commands Using Catalog Interface	2017-04-03 23:30:12 -07:00
pom.xml	[SPARK-17807][CORE] split test-tags into test-JAR	2016-12-21 16:37:20 -08:00