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https://issues.apache.org/jira/browse/DRILL-4211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Volodymyr Vysotskyi resolved DRILL-4211.
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Resolution: Fixed
Fix Version/s: 1.16.0
Fixed in the scope of DRILL-6734
> Column aliases not pushed down to JDBC stores in some cases when Drill
> expects aliased columns to be returned.
> --------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-4211
> URL: https://issues.apache.org/jira/browse/DRILL-4211
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators, Storage - JDBC
> Affects Versions: 1.3.0, 1.11.0
> Environment: Postgres db storage
> Reporter: Robert Hamilton-Smith
> Assignee: Timothy Farkas
> Priority: Major
> Labels: newbie
> Fix For: 1.16.0
>
>
> When making an sql statement that incorporates a join to a table and then a
> self join to that table to get a parent value , Drill brings back
> inconsistent results.
> Here is the sql in postgres with correct output:
> {code:sql}
> select trx.categoryguid,
> cat.categoryname, w1.categoryname as parentcat
> from transactions trx
> join categories cat on (cat.CATEGORYGUID = trx.CATEGORYGUID)
> join categories w1 on (cat.categoryparentguid = w1.categoryguid)
> where cat.categoryparentguid IS NOT NULL;
> {code}
> Output:
> ||categoryid||categoryname||parentcategory||
> |id1|restaurants|food&Dining|
> |id1|restaurants|food&Dining|
> |id2|Coffee Shops|food&Dining|
> |id2|Coffee Shops|food&Dining|
> When run in Drill with correct storage prefix:
> {code:sql}
> select trx.categoryguid,
> cat.categoryname, w1.categoryname as parentcat
> from db.schema.transactions trx
> join db.schema.categories cat on (cat.CATEGORYGUID = trx.CATEGORYGUID)
> join db.schema.wpfm_categories w1 on (cat.categoryparentguid =
> w1.categoryguid)
> where cat.categoryparentguid IS NOT NULL
> {code}
> Results are:
> ||categoryid||categoryname||parentcategory||
> |id1|restaurants|null|
> |id1|restaurants|null|
> |id2|Coffee Shops|null|
> |id2|Coffee Shops|null|
> Physical plan is:
> {code:sql}
> 00-00 Screen : rowType = RecordType(VARCHAR(50) categoryguid, VARCHAR(50)
> categoryname, VARCHAR(50) parentcat): rowcount = 100.0, cumulative cost =
> {110.0 rows, 110.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 64293
> 00-01 Project(categoryguid=[$0], categoryname=[$1], parentcat=[$2]) :
> rowType = RecordType(VARCHAR(50) categoryguid, VARCHAR(50) categoryname,
> VARCHAR(50) parentcat): rowcount = 100.0, cumulative cost = {100.0 rows,
> 100.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 64292
> 00-02 Project(categoryguid=[$9], categoryname=[$41], parentcat=[$47])
> : rowType = RecordType(VARCHAR(50) categoryguid, VARCHAR(50) categoryname,
> VARCHAR(50) parentcat): rowcount = 100.0, cumulative cost = {100.0 rows,
> 100.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 64291
> 00-03 Jdbc(sql=[SELECT *
> FROM "public"."transactions"
> INNER JOIN (SELECT *
> FROM "public"."categories"
> WHERE "categoryparentguid" IS NOT NULL) AS "t" ON
> "transactions"."categoryguid" = "t"."categoryguid"
> INNER JOIN "public"."categories" AS "categories0" ON "t"."categoryparentguid"
> = "categories0"."categoryguid"]) : rowType = RecordType(VARCHAR(255)
> transactionguid, VARCHAR(255) relatedtransactionguid, VARCHAR(255)
> transactioncode, DECIMAL(1, 0) transactionpending, VARCHAR(50)
> transactionrefobjecttype, VARCHAR(255) transactionrefobjectguid,
> VARCHAR(1024) transactionrefobjectvalue, TIMESTAMP(6) transactiondate,
> VARCHAR(256) transactiondescription, VARCHAR(50) categoryguid, VARCHAR(3)
> transactioncurrency, DECIMAL(15, 3) transactionoldbalance, DECIMAL(13, 3)
> transactionamount, DECIMAL(15, 3) transactionnewbalance, VARCHAR(512)
> transactionnotes, DECIMAL(2, 0) transactioninstrumenttype, VARCHAR(20)
> transactioninstrumentsubtype, VARCHAR(20) transactioninstrumentcode,
> VARCHAR(50) transactionorigpartyguid, VARCHAR(255)
> transactionorigaccountguid, VARCHAR(50) transactionrecpartyguid, VARCHAR(255)
> transactionrecaccountguid, VARCHAR(256) transactionstatementdesc, DECIMAL(1,
> 0) transactionsplit, DECIMAL(1, 0) transactionduplicated, DECIMAL(1, 0)
> transactionrecategorized, TIMESTAMP(6) transactioncreatedat, TIMESTAMP(6)
> transactionupdatedat, VARCHAR(50) transactionmatrulerefobjtype, VARCHAR(50)
> transactionmatrulerefobjguid, VARCHAR(50) transactionmatrulerefobjvalue,
> VARCHAR(50) transactionuserruleguid, DECIMAL(2, 0) transactionsplitorder,
> TIMESTAMP(6) transactionprocessedat, TIMESTAMP(6)
> transactioncategoryassignat, VARCHAR(50) transactionsystemcategoryguid,
> VARCHAR(50) transactionorigmandateid, VARCHAR(100) fingerprint, VARCHAR(50)
> categoryguid0, VARCHAR(50) categoryparentguid, DECIMAL(3, 0) categorytype,
> VARCHAR(50) categoryname, VARCHAR(50) categorydescription, VARCHAR(50)
> partyguid, VARCHAR(50) categoryguid1, VARCHAR(50) categoryparentguid0,
> DECIMAL(3, 0) categorytype0, VARCHAR(50) categoryname0, VARCHAR(50)
> categorydescription0, VARCHAR(50) partyguid0): rowcount = 100.0, cumulative
> cost = {100.0 rows, 100.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 64259
> {code}
> I worked around it by creating a view on postgres but not ideal. Thanks in
> advance.
> First Drill Jira Bug.
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