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From "Abhishek Girish (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2422) Querying views having the same name as their datasource fails
Date Tue, 10 Mar 2015 22:17:38 GMT
Abhishek Girish created DRILL-2422:
--------------------------------------

             Summary: Querying views having the same name as their datasource fails
                 Key: DRILL-2422
                 URL: https://issues.apache.org/jira/browse/DRILL-2422
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 0.8.0
            Reporter: Abhishek Girish
            Assignee: Jinfeng Ni


Git.Commit.ID: f658a3c (Mar 9 2015)

*Convert a simply text file to Parquet:*
{code:sql}
> select * from `abc.dat` limit 1;
+------------+
|  columns   |
+------------+
| ["hi","abc"] |
+------------+
1 row selected (0.574 seconds)

> create table abc_1 as select cast(columns[0] as varchar(10)) as a from `abc.dat`;
+------------+---------------------------+
|  Fragment  | Number of records written |
+------------+---------------------------+
| 0_0        | 1                         |
+------------+---------------------------+
1 row selected (0.626 seconds)

> select * from abc_1 limit 1;
+------------+
|     a      |
+------------+
| hi         |
+------------+
1 row selected (0.135 seconds)
{code}

*Create a view on top of the Parquet table:*
{code:sql}
> create view abc_1 as select cast(a as varchar(10)) as b from abc_1;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | View 'abc_1' created successfully in 'dfs.tmp' schema |
+------------+------------+
1 row selected (0.072 seconds)

> select * from abc_1 limit 1;
Query failed: SqlValidatorException: Column 'a' not found in any table
Error: exception while executing query: Failure while executing query. (state=,code=0)

OR 

> create view abc_1 as select cast(a as varchar(10)) as b from dfs.`/tmp/abc_1`;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | View 'abc_1' created successfully in 'dfs.tmp' schema |
+------------+------------+
1 row selected (0.047 seconds)

> select * from abc_1 limit 1;
Query failed: SqlValidatorException: Column 'a' not found in any table
Error: exception while executing query: Failure while executing query. (state=,code=0)

OR 

0: jdbc:drill:zk=10.10.103.32:5181> create view abc_1 as select a from dfs.`/tmp/abc_1`;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | View 'abc_1' created successfully in 'dfs.tmp' schema |
+------------+------------+
1 row selected (0.046 seconds)

0: jdbc:drill:zk=10.10.103.32:5181> select * from abc_1 limit 1;
+--+
|  |
+--+
+--+
No rows selected (11.856 seconds)
{code}
In the third case, queries do not return and need to be cancelled. 

For example:
{code:sql}
0: jdbc:drill:zk=10.10.103.32:5181> use dfs.tpcds1;
+--+
|  |
+--+
+--+
No rows selected (2.854 seconds)
{code}
Sqlline needs to be suspended, killed and restarted to be able to query again. 







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