UTF -8 or UTF-16? - response (2) by dnoeth
Hi Nishant, UNICODE in Teradata is always stored as UTF-16, i.e. two bytes per character. In 13.10 there's COMPRESS USING TransUnicodeToUTF8 DECOMPRESS USING TransUTF8ToUnicode to change internal...
View ArticleHow long it will take to insert 20 million rows to teradata table from java...
Hi All, We want to insert the bulk amount of data to Teradata tables from java application for Cost analytics project (it is a new project) . As per my analysis & understanding , JDBC FastLoad...
View ArticleUTF -8 or UTF-16? - response (3) by Raja_KT
Hi Nishant, Will this function help you? I ran two cases select octet_length('Amazon Web services',UTF8) UTF8_byte,octet_length('Amazon Web services',UTF16) UTF16_byte You can substitute your values...
View ArticleRewriting the Self join - response (1) by Raja_KT
Hi Bikky, My thought is that the first select within the derive is enough.Do I miss anything here, due to slight astigmatism :) ? Why don't your see the explain and validate the data too? Cheers, Raja
View ArticleRewriting the Self join - response (2) by ulrich
hm, try and check the differences in explain and run times select A.MERGE_ID, A.REM_ID, A.EFF_DT, A.FIRST_MERGE_DT , A.CURR_CUST_MERGE_DT FROM CUST_HIST A where exists ( select * from CUST_HIST B...
View ArticleRewriting the Self join - response (4) by ulrich
This should create also the same output an would do the self join only once but comes with a smal prod join SELECT case when c.id = 1 then A.MERGE_ID else B.REM_ID end, case when c.id = 1 then A.REM_ID...
View ArticleDifference between NULL and Empty - forum topic by tddev1984
Hi, Could some one please explain me the exact difference between NULL and Empty values for a field from a database perspective ? I do understand the concept that NULL is absence of a value and empty...
View ArticleHow long it will take to insert 20 million rows to teradata table from java...
I don't think there is an absolute answer of this, you might need to look at some bench marking results for this but still it will be highly dependent upon I/O and network/communication capacity....
View ArticleHow long it will take to insert 20 million rows to teradata table from java...
This might be helpful too.http://developer.teradata.com/doc/connectivity/jdbc/reference/current/jdbcug_chapter_2.html#BABFGFA2
View ArticleDifference between NULL and Empty - response (1) by M.Saeed Khurram
hi, You know well about the null, it is absolutely absense of a value, and if you find the meaning of empty the google defines it as "containing nothing; not filled or occupied" So you can say NULL is...
View Articlediff between USI and NUSI - response (13) by s@ir@m
Hi Dieter, can u e explain why NUSI takes all AMP Operation, give me Best example Thanks Ratnam
View ArticleTeradata - response (1) by M.Saeed Khurram
Hi, You can find YTD and MTD caiolculation examples here:http://www.info.teradata.com/htmlpubs/DB_TTU_14_00/index.html#page/SQL_Reference/B035_1145_111A/App-Performance_SQL_Functions.100.06.html Please...
View ArticleCan some one provide the solution for the below scenario? - response (9) by...
You can find YTD and MTD caiolculation examples here:http://www.info.teradata.com/htmlpubs/DB_TTU_14_00/index.html#page/SQL_Reference/B035_1145_111A/App-Performance_SQL_Functions.100.06.html
View Articlediff between USI and NUSI - response (14) by M.Saeed Khurram
Hi Ratnam, I know I am not Dieter but let me try to answer your question: In a NUSI access the message from PE is brodcasted to all the amps, the reason is to scan all the NUSI subtables, once the NUSI...
View ArticleWhy I do not see all the databases in Teradata Studio - response (9) by fgrimmer
Is the database you are looking for a child to another database? You can change the Data Source Explorer view to show all the databases in a flat view (not hierarchical) by changing a preference. Go to...
View ArticlePerformance Metrics for Fastload Implementation Options: 1.JDBC Fastload...
No, there are no published performance metrics, and we (Teradata Engineering) are unlikely to publish anything like that, for a couple of reasons: 1. We want to avoid the notion of "competition"...
View ArticleMerge statement showing 0 records merged - response (4) by Soumik
hi Raja,as you mentioned that it can be the behaviour of teradata sql assistant, but as per my experience, when i ran the same query in sql assistant, i could see the non zero record counts. Running...
View ArticleHow long it will take to insert 20 million rows to teradata table from java...
As Kawish said, the throughput that you obtain will be dependent on many factors, such as the number of columns, the average amount of data per row, the available network bandwidth, the CPU and I/O...
View ArticleMerge statement showing 0 records merged - response (5) by Raja_KT
Hi Soumik, Why don't you paste the code here in all four cases with data so that we can have a look. Of course, I dont have login to unix box, but others who can test , can give an opinion. Cheers, Raja
View ArticleWhy I do not see all the databases in Teradata Studio - response (10) by...
fgrimmer: That was it. Thank you so much. I can now see all the databases. Prem
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