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Posted to issues@drill.apache.org by "Mariano Ruiz (JIRA)" <ji...@apache.org> on 2015/03/02 07:00:14 UTC
[jira] [Updated] (DRILL-2352) MongoDB join queries can't select
fields
[ https://issues.apache.org/jira/browse/DRILL-2352?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mariano Ruiz updated DRILL-2352:
--------------------------------
Description:
When I perform this *JOIN* query between two MongoDB documents, there is no problem:
{code:sql}
select * from zips as z join states as s on z.state = s.code;
{code}
Result:
{code}
+------------+------------+
| * | *0 |
+------------+------------+
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "NY" , "name" : "New York"} |
| { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
| { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
{code}
But when I try to select which field I want to see I get this:
{code}
0: jdbc:drill:zk=local> select z.city, s.name from zips as z join states as s on z.state = s.code;
Query failed: Query failed: Unexpected exception during fragment initialization: null
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
I realized after a few tests, that the problem is you can't specify a column from the table left operator in the JOIN-ON clause.
For example, this works:
{code}
jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state limit 5;
+------------+
| city |
+------------+
| LOS ANGELES |
| TRUCKEE |
| TRUCKEE |
| SOUTH LAKE TAHOE |
| TAHOE VISTA |
{code}
But this doesn't:
{code}
jdbc:drill:zk=local> select s.name from states as s join zips as z on s.code = z.state limit 5;
+------------+
| name |
+------------+
+------------+
{code}
The same occurs in the WHERE clause, for example this works:
{code:sql}
select z.city from states as s join zips as z on s.code = z.state where z.city = 'LOS ANGELES';
{code}
And this doesn't:
{code}
0: jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state where s.code = 'CA' limit 5;
Query failed: Query failed: Unexpected exception during fragment initialization: null
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
was:
When I perform this *JOIN* query between two MongoDB documents, there is no problem:
{code:sql}
select z.city, s.name from zips as z join states as s on z.state = s.code;
{code}
Result:
{code}
+------------+------------+
| * | *0 |
+------------+------------+
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
| { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "NY" , "name" : "New York"} |
| { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
| { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
{code}
But when I try to select which field I want to see I get this:
{code}
0: jdbc:drill:zk=local> select z.city, s.name from zips as z join states as s on z.state = s.code;
Query failed: Query failed: Unexpected exception during fragment initialization: null
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
I realized after a few tests, that the problem is you can't specify a column from the table left operator in the JOIN-ON clause.
For example, this works:
{code}
jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state limit 5;
+------------+
| city |
+------------+
| LOS ANGELES |
| TRUCKEE |
| TRUCKEE |
| SOUTH LAKE TAHOE |
| TAHOE VISTA |
{code}
But this doesn't:
{code}
jdbc:drill:zk=local> select s.name from states as s join zips as z on s.code = z.state limit 5;
+------------+
| name |
+------------+
+------------+
{code}
The same occurs in the WHERE clause, for example this works:
{code:sql}
select z.city from states as s join zips as z on s.code = z.state where z.city = 'LOS ANGELES';
{code}
And this doesn't:
{code}
0: jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state where s.code = 'CA' limit 5;
Query failed: Query failed: Unexpected exception during fragment initialization: null
Error: exception while executing query: Failure while executing query. (state=,code=0)
{code}
> MongoDB join queries can't select fields
> ----------------------------------------
>
> Key: DRILL-2352
> URL: https://issues.apache.org/jira/browse/DRILL-2352
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - MongoDB
> Affects Versions: 0.7.0
> Environment: Ubuntu 14.04 64 bits, OpenJDK 1.7.0_75, Mongo 2.6.8
> Reporter: Mariano Ruiz
> Assignee: B Anil Kumar
>
> When I perform this *JOIN* query between two MongoDB documents, there is no problem:
> {code:sql}
> select * from zips as z join states as s on z.state = s.code;
> {code}
> Result:
> {code}
> +------------+------------+
> | * | *0 |
> +------------+------------+
> | { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
> | { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
> | { "city" : "AGAWAM" , "loc" : [ -72.622739 , 42.070206] , "pop" : 15338 , "state" : "MA"} | { "code" : "NY" , "name" : "New York"} |
> | { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "CA" , "name" : "California"} |
> | { "city" : "CUSHMAN" , "loc" : [ -72.51565 , 42.377017] , "pop" : 36963 , "state" : "MA"} | { "code" : "DC" , "name" : "Washington"} |
> {code}
> But when I try to select which field I want to see I get this:
> {code}
> 0: jdbc:drill:zk=local> select z.city, s.name from zips as z join states as s on z.state = s.code;
> Query failed: Query failed: Unexpected exception during fragment initialization: null
> Error: exception while executing query: Failure while executing query. (state=,code=0)
> {code}
> I realized after a few tests, that the problem is you can't specify a column from the table left operator in the JOIN-ON clause.
> For example, this works:
> {code}
> jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state limit 5;
> +------------+
> | city |
> +------------+
> | LOS ANGELES |
> | TRUCKEE |
> | TRUCKEE |
> | SOUTH LAKE TAHOE |
> | TAHOE VISTA |
> {code}
> But this doesn't:
> {code}
> jdbc:drill:zk=local> select s.name from states as s join zips as z on s.code = z.state limit 5;
> +------------+
> | name |
> +------------+
> +------------+
> {code}
> The same occurs in the WHERE clause, for example this works:
> {code:sql}
> select z.city from states as s join zips as z on s.code = z.state where z.city = 'LOS ANGELES';
> {code}
> And this doesn't:
> {code}
> 0: jdbc:drill:zk=local> select z.city from states as s join zips as z on s.code = z.state where s.code = 'CA' limit 5;
> Query failed: Query failed: Unexpected exception during fragment initialization: null
> Error: exception while executing query: Failure while executing query. (state=,code=0)
> {code}
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