Teradata database restart? - response (6) by ToddAWalter
Yes. Performance degradation only between the two restarts of course.
View ArticleWhat's the quickest way to find out all the values under an attributes -...
Dieter thanks alot. Found your another Post where you have explained it all! Great!
View ArticleTo check ALL condition in Teradata - forum topic by pavan.polish
Hi All, I have a below requirement:- Table1:- GROUP_ID - MEMBER_ID A - A A - B A - C M - M M - N M - O X - X X - Y X - Z Table2:- MEMBER_ID - MEMBER_FLAG A - Y B - Y C - Y M - Y N - ? O - Y X - N Y - N...
View ArticleForming Groups which are circular in nature - response (2) by pavan.polish
Hi Dieter, Based on some business conditions the starting point can be decided. In this case, assuming starting point as A to check further. Sagar.
View ArticleUSI VS NUSI - forum topic by dsnaveen
Hi Guys, Can please someone let me know in which scenario we need to use USI and NUSI. 1 or 2 example would be great. Thank you, Naveen Forums: Database
View ArticleTo check ALL condition in Teradata - response (1) by dnoeth
Hi Sagar, simply add: SELECT .... QUALIFY MIN(MEMBER_FLAG) OVER (PARTITION BY GROUP_ID) = 'Y' AND MIN(MEMBER_FLAG) OVER (PARTITION BY GROUP_ID) = MAX(MEMBER_FLAG) OVER (PARTITION BY GROUP_ID) Dieter
View ArticleForming Groups which are circular in nature - response (3) by dnoeth
Hi Sagar, for me assumimg is easy, but it's hard for SQL :-) There must be a SQL-condition to find the starting point. Dieter
View ArticleUSI VS NUSI - response (1) by dnoeth
Hi Naveen, SIs in Teradata are rarely used for Joins (different to other DBMSes), so they're usually implemented to get a faster (index-based) access (this is the same in any other DBMS). As you can't...
View ArticleTo check ALL condition in Teradata - response (2) by pavan.polish
Hi Dieter, Many thanks for your inputs and it worked well for the said scenario. I got the data like below:- GROUP_ID - MEMBER_ID - MEMBER_FLAG M - M - N M - N - N M - O - N X - X - Y X - Y - N X - Z -...
View ArticleTo check ALL condition in Teradata - response (3) by dnoeth
Hi Sagar, this QUALIFY will return only group M. If not, you did something wrong, so better show your actual query. Dieter
View ArticleImmediately exit a query if a condition is verified - response (13) by...
You can use the EXISTS clause as follows: SELECT * FROM a_really_big_table WHERE EXISTS (SELECT day_of_week FROM sys_calendar.calendar WHERE day_of_week = 2...
View ArticleRemove FALLBACK option and Data from FALLBACK AMP - response (3) by teraforsk
Views/macros donot require perm space and their defination is just store in DD. I dont thing it really makes sense to have fallback/No Fallback for Views and Macros.
View ArticleIssue with Rank/row_number in table - forum topic by adash-7422
Hi I have a table with 19 M records and we are using row_number to get ranks on 10/11 cols. Something like: row_number () over (partition by cola,colb,colc,cold order by col1 desc) rank1,...
View ArticleIssue with Rank/row_number in table - response (1) by dnoeth
Each RANK will be a seperate step in explain and each step will spool all the rows twice. What datatypes are the PARTITION/ORDER BY columns? VARCHARs are expanded to CHARs in that case, this might...
View ArticleCompiling UDFs Migration from TD13 to TD14 - response (1) by shershahkhan
Hi, I don't have answer to your question but just wanted to check how did the migration go overall? I am PLanning for migration from TD13.1 to TD14.1 so wanted to check is there any issues that you...
View Articlehelp me to group the records - forum topic by Gowtham
help me to group the records as the resultset given below.TableID TYPE STDT ENDT 1 A 1Aug 10Aug 1 A 11Aug 20Aug 2 B 21Aug 30Aug 2 B 31Aug 9Sep 1 A 10Sep 20SepBelow is the expected resultsetID TYPE STDT...
View Articlehelp me to group the records - response (1) by chinmay Athavale
sel ID,TYPE,MIN(STDT),MAX(ENDT)FROM TABLE GROUP BY 1,2 Regards, Chinmay Athavale
View Articlehelp me to group the records - response (2) by Gowtham
Hi chinmay, your query is wrong, check my expected result...
View Articlehelp me to group the records - response (3) by Gowtham
Hi chinmay, your query is wrong, check my expected result...
View Articlehelp me to group the records - response (4) by Gowtham
Chinmay, for same id and type I want different stdt and endt, we cannot groupby directly.
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