"From" clauses in Create database query. - topic by seahawkmehta
Hi I'm biginner to teradata. I want to ask u that while we creating a new database in teradata why we use "from" clauses in that query.
View ArticleTeradata Parallel Transporter (TPT) 14.00.00.07 on Windows 2003 x64 Java...
Hi, I'm trying to install teradata 14 on Windows 2003x64 server manually. I've installed core modules without problem but when I install TPT, it gives me error: 'java’ is not recognized as an internal...
View ArticleAlert for certain DDL/DML queries at real time using VP, TASM or any other...
Hi, Is there a way I can send alerts using VP, TASM or any other means only for collect stats queries? My intension is to set up an alert for long running collect stats during business hours (eg:...
View ArticleCounting consecutive dates - topic by Tigersense
I am trying to figure out how to count consecutive dates for and Employee where TRAN_TYP = 'A' I have tried CSUM but could not get exactly what I wanted. Any help would be appreciated. Thanks....
View ArticleUSI in multiload - response (10) by cheeli
Thank you for the post Dieter. 1. Each AMP will hold the secondary index values for their rows in the base table only for NUSI. How does the hash value point to the same AMP for the rows that are in...
View ArticleCounting consecutive dates - response (1) by mohan.mscss
Please show some data and how exactly you need the result..
View ArticleUSI in multiload - response (11) by dnoeth
Hi Cheeli, "broadcast to all AMPs" means sending a message over the BYNET to all AMPs in the system. This has to be done for a NUSI access: the hash of the actual NUSI value can be calculated (using...
View Article"From" clauses in Create database query. - response (1) by dnoeth
In Teradata there's a hierarchy of databases/users, "dbc" being the root. When FROM is not specified it defaults to the logged in user. As most customers use a single admin user (e.g. "sysdba") for...
View ArticleCounting consecutive dates - response (2) by dnoeth
Yes, some more info would be helpful indeed, but this is probably what you want: select EMP_NUM, TRAN_DT, ROW_NUMBER() OVER (PARTITION BY EMP_NUM, dummy ORDER BY TRAN_DT) as consecutive_days from (...
View ArticleCounting consecutive dates - response (3) by Tigersense
dnoeth, That is great. It has basically gotten me on the right track. Much Thanks!!! Wish there was a thumbs up button for you.
View ArticleExplain plans differ when object (view) names are fully qualified and when...
Does the optimizer treat a query differently when the object names in the query are fully qualified vs. when they are not fully qualified ? I came across a query which gives one explain plan when the...
View ArticleExplain plans differ when object (view) names are fully qualified and when...
It will be great if you provide view defintion
View ArticleExplain plans differ when object (view) names are fully qualified and when...
My mistake, I meant query which gives different plan, if possible
View ArticleSlow Left Join query - response (1) by ulrich
some observations - 1. "spa_usage1 contains app 54 million rows" vs. "The size of Spool 2 is estimated with low confidence to be 567,176,439 rows" which is a 10x difference. Stats not up to date? or...
View ArticlePurge the work tables cretaed a month before and create report with the list...
Hi All, I need to purge work tables which were created a month before. I am using the below query to extract the list of all such tables: SELECT DISTINCT 'DROP TABLE DB1.' || B.TABLENAME || ' ;' FROM...
View ArticleSlow Left Join query - response (2) by nyemul
Hi Ulrich, select count(*) from misc.SPA_USAGE1 shows rows as 575,641,759 DataBaseName TableName skew_factor 1 misc spa_usage1 1.71 My apologies for...
View ArticleSlow Left Join query - response (3) by ulrich
The skew value of the table is irrelevant as it is reflecting the S_SK,C_SK combination. try select top 100 hashrow(S_SK), count(*) from spa_usage1 group by 1 order by 2 descPPI - for this specific...
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