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Posted to dev@hive.apache.org by "Prasad Chakka (JIRA)" <ji...@apache.org> on 2009/05/20 01:54:45 UTC
[jira] Created: (HIVE-497) predicate pushdown fails if all columns
are not selected
predicate pushdown fails if all columns are not selected
--------------------------------------------------------
Key: HIVE-497
URL: https://issues.apache.org/jira/browse/HIVE-497
Project: Hadoop Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 0.4.0
Reporter: Prasad Chakka
Fix For: 0.4.0
predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
create table ppda(a string, b string);
select a from ppda where ppda.a > 10; --> fails
select b from ppda where ppda.a > 10; --> ok
select * from ppda where ppda.a > 10; --> ok
select b from appd where appd.b > 10 and appd.a > 20; --> ok
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[jira] Updated: (HIVE-497) predicate pushdown fails if all columns
are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasad Chakka updated HIVE-497:
-------------------------------
Assignee: Prasad Chakka
Status: Patch Available (was: Open)
The select operator created by ColumnPruner doesn't have the map of output column to input column names so the code is asserting as expected. Added this map for ColumnPruner as well.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Ashish Thusoo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711324#action_12711324 ]
Ashish Thusoo commented on HIVE-497:
------------------------------------
+1
Am running tests on this and I will check it in once those are done.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Updated: (HIVE-497) predicate pushdown fails if all columns
are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasad Chakka updated HIVE-497:
-------------------------------
Attachment: hive-497.3.patch
ok, another attempt. *sigh*
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.3.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "He Yongqiang (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711037#action_12711037 ]
He Yongqiang commented on HIVE-497:
-----------------------------------
If we keeps column information(column names instead of numbers) for input tables,as Hive-460 intends to do, can this problem also be resolved.
In my debug, the error is caused by passing in number to RowResover's reverseLookup(), but should pass in real column name.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12710950#action_12710950 ]
Prasad Chakka commented on HIVE-497:
------------------------------------
I think the problem only happens if ColumPruner kicks in and creates a new SELECT op. Otherwise things seem to be fine.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Fix For: 0.4.0
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711376#action_12711376 ]
Prasad Chakka commented on HIVE-497:
------------------------------------
yes, we should turn on ppd. let's make it a different JIRA.
@ashish, TestParse results shouldn't need to be changed since ppd is not enabled for them. and tests passed fine for me. anyways, i am rerunning the tests.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "He Yongqiang (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711254#action_12711254 ]
He Yongqiang commented on HIVE-497:
-----------------------------------
Got it. Thanks for the explanation, Prasad. The parse and optimize codes are making me a little headache. :D
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "He Yongqiang (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711033#action_12711033 ]
He Yongqiang commented on HIVE-497:
-----------------------------------
+1. Looks good, and it passed my example.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Ashish Thusoo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711336#action_12711336 ]
Ashish Thusoo commented on HIVE-497:
------------------------------------
I am getting a test failure for
ppd1.q
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Ashish Thusoo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711365#action_12711365 ]
Ashish Thusoo commented on HIVE-497:
------------------------------------
Yes we should, we definitely have to do it before putting it into production.
Need a new JIRA for that. Can you do the honors?
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Updated: (HIVE-497) predicate pushdown fails if all columns
are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasad Chakka updated HIVE-497:
-------------------------------
Attachment: hive-497.patch
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Ashish Thusoo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711368#action_12711368 ]
Ashish Thusoo commented on HIVE-497:
------------------------------------
still fails the tests.
You have to update the outputs for TestParse as well.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Updated: (HIVE-497) predicate pushdown fails if all columns
are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasad Chakka updated HIVE-497:
-------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
Status: Resolved (was: Patch Available)
athusoo committed this patch may19th, 2009.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.3.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Updated: (HIVE-497) predicate pushdown fails if all columns
are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Prasad Chakka updated HIVE-497:
-------------------------------
Attachment: hive-497.2.patch
i forgot to update the ppd1.q.out file. attached is the updated version.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Prasad Chakka (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711246#action_12711246 ]
Prasad Chakka commented on HIVE-497:
------------------------------------
actually "0" here is not a number but the internal name. so if and when 460 is fixed, actual names are compared. name of columns change when they flow through an operator, especially in a select op. so the colExprMap keeps a map of output columns to input column names (or the other way round, not sure) so that translation can be done when predicates move up (or down depending on how you look at it) an operator.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
--
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Ashish Thusoo (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12712327#action_12712327 ]
Ashish Thusoo commented on HIVE-497:
------------------------------------
Running the tests now.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.3.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
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[jira] Commented: (HIVE-497) predicate pushdown fails if all
columns are not selected
Posted by "Namit Jain (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12711363#action_12711363 ]
Namit Jain commented on HIVE-497:
---------------------------------
can we turn on partition pruning by default in the unit tests - new tests are getting added all the time, and it might be difficult to catch these bugs.
We can still turn it off in any production cluster till it gets reasonably tested.
> predicate pushdown fails if all columns are not selected
> --------------------------------------------------------
>
> Key: HIVE-497
> URL: https://issues.apache.org/jira/browse/HIVE-497
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Prasad Chakka
> Assignee: Prasad Chakka
> Fix For: 0.4.0
>
> Attachments: hive-497.2.patch, hive-497.patch
>
>
> predicate pushdown seems to fail in some scenarios... it is ok if all the columns are selected.
> create table ppda(a string, b string);
> select a from ppda where ppda.a > 10; --> fails
> select b from ppda where ppda.a > 10; --> ok
> select * from ppda where ppda.a > 10; --> ok
> select b from appd where appd.b > 10 and appd.a > 20; --> ok
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