GitHub user wangyum opened a pull request:
https://github.com/apache/spark/pull/21863
[SPARK-18874][SQL][FOLLOW-UP] Improvement type mismatched message
## What changes were proposed in this pull request?
How to reproduce:
```sql
create table test1(c1 double, c2 string, c3 string);
create table test2(c1 decimal(18, 0), c2 string, c3 int);
select * from test1 where (c1, c2, c3) in (select c1, c2, c3 from test2);
```
Vanilla message:
```
Mismatched columns:
[(, t, e, s, t, 1, ., `, c, 1, `, :, d, o, u, b, l, e, ,, , t, e, s, t, 2,
., `, c, 1, `, :, d, e, c, i, m, a, l, (, 1, 8, ,, 0, ), ), (, t, e, s, t, 1,
., `, c, 3, `, :, s, t, r, i, n, g, ,, , t, e, s, t, 2, ., `, c, 3, `, :, i,
n, t, )]
```
After this patch:
```
Mismatched columns:
[(test1.`c1`:double, test2.`c1`:decimal(18,0)), (test1.`c3`:string,
test2.`c3`:int)]
```
## How was this patch tested?
manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangyum/spark SPARK-18874
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21863.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 #21863
----
commit e455bda5f62f9ce6805809b66482a93bec9d7956
Author: Yuming Wang <yumwang@...>
Date: 2018-07-24T15:36:37Z
Improvement type mismatched message.
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