liancheng commented on issue #24809: [SPARK-21136][SQL] Disallow FROM-only 
statements and show better warnings for Hive-style single-from statements
URL: https://github.com/apache/spark/pull/24809#issuecomment-501023688
 
 
   > Deprecate the `FROM table` statement, which is supported by accident and 
is actually parsed in the wrong code path.
   
   @yeshengm, "deprecate" in the PR description is inaccurate. This PR drops 
this syntax entirely instead of deprecating it, which usually means that we 
present a deprecation warning when a feature is used and remove it after a few 
releases.

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