Gleb Kanterov created BEAM-6810:
-----------------------------------
Summary: [SQL] Plan optimizer eliminates aliasing in trivial
projections
Key: BEAM-6810
URL: https://issues.apache.org/jira/browse/BEAM-6810
Project: Beam
Issue Type: Bug
Components: dsl-sql
Affects Versions: 2.11.0
Reporter: Gleb Kanterov
Assignee: Gleb Kanterov
Fix For: 2.12.0
Trivial projection is a projection that uses all input columns and doesn't
re-order them. Simplest example is:
{code}
SELECT * FROM PCOLLECTION
{code}
Given input PCollection with a schema `c_int64: BIGINT` following query should
result in PCollection with a schema `abc: BIGINT`, however, due to a bug in
query optimization, it results in `c_int64: BIGINT`
{code}
SELECT c_int64 as abc FROM PCOLLECTION
{code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
