GitHub user huaxingao opened a pull request:
https://github.com/apache/spark/pull/13492
[SPARK-15749][SQL]make the error message more meaningful
## What changes were proposed in this pull request?
For table test1 (C1 varchar (10), C2 varchar (10)), when I insert a row
using
```
sqlContext.sql("insert into test1 values ('abc', 'def', 1)")
```
I got error message
```
Exception in thread "main" java.lang.RuntimeException: RelationC1#0,C2#1
JDBCRelation(test1)
requires that the query in the SELECT clause of the INSERT INTO/OVERWRITE
statement generates the same number of columns as its schema.
```
The error message is a little confusing. In my simple insert statement, it
doesn't have a SELECT clause.
I will change the error message to a more general one
```
Exception in thread "main" java.lang.RuntimeException: RelationC1#0,C2#1
JDBCRelation(test1)
requires that the data to be inserted have the same number of columns as
the target table.
```
## How was this patch tested?
I tested the patch using my simple unit test, but it's a very trivial
change and I don't think I need to check in any test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/huaxingao/spark spark-15749
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13492.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #13492
----
commit 11768e8ec799a8b51bbf90ff9943b2b0a2808e72
Author: Huaxin Gao <huax...@us.ibm.com>
Date: 2016-06-03T06:15:32Z
[SPARK-15749][SQL]make the error message more meaningful
----
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