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Feature Request
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Resolution: Done
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Major
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8.13.3
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None
This is somewhat related to TEIID-3743, which added support of multiple count distinct metrics. We have a requirement to allow multiple count distinct metrics grouped by common attributes.
Currently, we get a failure as follows:
org.teiid.runtime.client.TeiidClientException: java.lang.RuntimeException: Remote org.teiid.core.TeiidProcessingException: TEIID30504 vw_impression_click_transaction_process_date_detail: 500051 TEIID11008:TEIID11004 Error executing statement(s): [Prepared Values: [] SQL: SELECT g_0.process_date_key, SUM(g_0.num_clicks), SUM(g_0.num_impressions), COUNT(DISTINCT g_0.orderid), COUNT(DISTINCT g_0.`hash_tid`), SUM(g_0.sales) FROM detail.vw_impression_click_transaction_process_date_detail g_0 WHERE g_0.process_date_key >= '2016-05-22' AND g_0.process_date_key < '2016-05-23' AND g_0.advertiser_key = 12345 GROUP BY g_0.process_date_key]
To allow this request to succeed, we could have translator write that Impala query as:
select nvl(v1.c1,v2.c1), nvl(v1.c2,v1.c2), nvl(v1.c3,v1.c3), v1.c4, v2.c5, nvl(v1.c6,v1.c6) from (
SELECT g_0.process_date_key as c1,
SUM(g_0.num_clicks) as c2,
SUM(g_0.num_impressions) as c3,
COUNT(DISTINCT g_0.orderid) as c4,
SUM(g_0.sales) as c6
FROM detail.vw_impression_click_transaction_process_date_detail g_0
WHERE g_0.process_date_key >= '2016-05-22'
AND g_0.process_date_key < '2016-05-23'
AND g_0.advertiser_key = 12345
GROUP BY g_0.process_date_key
) v1 inner join
(
SELECT g_0.process_date_key as c1,
SUM(g_0.num_clicks) as c2,
SUM(g_0.num_impressions) as c3,
COUNT(DISTINCT g_0.`hash_tid`) as c5,
SUM(g_0.sales) as c6
FROM detail.vw_impression_click_transaction_process_date_detail g_0
WHERE g_0.process_date_key >= '2016-05-22'
AND g_0.process_date_key < '2016-05-23'
AND g_0.advertiser_key = 12345
GROUP BY g_0.process_date_key
) v2 on v1.c1 = v2.c1;
