Shixiong Zhu created SPARK-15231:
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Summary: Document the semantic of saveAsTable and insertInto and
don't drop columns silently
Key: SPARK-15231
URL: https://issues.apache.org/jira/browse/SPARK-15231
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Shixiong Zhu
Assignee: Shixiong Zhu
We should document the difference between "insertInto" and "saveAsTable":
"insertInto" is using the position-based column resolution but "saveAsTable
with append" is using name based resolution.
In addition, for "saveAsTable with append", when try to add more columns, we
just drop the new columns silently. The correct behavior should be throwing an
exception.
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