[jira] [Created] (DRILL-4374) Drill rewrites Postgres query with ambiguous column references

["Justin Bradford (JIRA)" <ji...@apache.org>]

Justin Bradford created DRILL-4374:
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             Summary: Drill rewrites Postgres query with ambiguous column references
                 Key: DRILL-4374
                 URL: https://issues.apache.org/jira/browse/DRILL-4374
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 1.4.0
            Reporter: Justin Bradford


Drill drops table references when rewriting this query, resulting in ambiguous column references. This query: {code:sql} select s.uuid as site_uuid, psc.partner_id, sum(psc.net_revenue_dollars) as revenue from app.public.partner_site_clicks psc join app.public.sites s on psc.site_id = s.id join app.public.partner_click_days pcd on pcd.id = psc.partner_click_day_id where s.generate_revenue_report is true and pcd.`day` = '2016-02-07' group by s.uuid, psc.partner_id; {code} Results in this error: {quote} DATA_READ ERROR: The JDBC storage plugin failed while trying setup the SQL query. {quote} Trying to run this re-written query: {code:sql} SELECT "site_uuid", "partner_id", SUM("net_revenue_dollars") AS "revenue" FROM (SELECT "uuid" AS "site_uuid", "partner_id", "net_revenue_dollars" FROM "public"."partner_site_clicks" INNER JOIN "public"."sites" ON "partner_site_clicks"."site_id" = "sites"."id" INNER JOIN "public"."partner_click_days" ON "partner_site_clicks"."partner_click_day_id" = "partner_click_days"."id" WHERE "sites"."generate_revenue_report" IS TRUE AND "partner_click_days"."day" = '2016-02-07') AS "t0" GROUP BY "site_uuid", "partner_id" {code} That query fails due to an ambiguous "partner_id" reference as two of the tables have that column.



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