Teradata is a parallel 'shared-nothing' database management system. It is primarily used for data warehouse applications with large data volumes.

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How to split a large table in Teradata

I'm trying to load data from a very large table (200 million rows) into a Presentation Datamart (PDM) for an Enterprise Data Warehouse using Teradata 14.10. I want to split this large table into ...
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SQL MAX function

Suppose I have a table with attributes Name, Age as follows: MyTable (Name, Age) Now, to get the oldest age I can write the following query: SELECT MAX(Age) AS "Oldest Age" FROM MyTable; ...
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Teradata query to fetch records based on date value

I have a case where current date is passed as a parameter to fetch records in TD through a SQL. If current_date doesnt have any records in the DB, then I need to query the DB using previous date ...
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Problem while connecting to teradata with sqoop

I am trying to connect to Teradat using Sqoop with following command: sqoop import -libjars /usr/lib/sqoop/lib/tdgssconfig.jar,/usr/lib/sqoop/lib/terajdbc4.jar -driver com.teradata.jdbc.TeraDriver ...
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Is it possible to automatically convert/load an Access database into a CSV or TXT file?

I'm working on moving an Access database to ultimately Teradata. Now I know that Teradata can't read Access files (.aacdb). So what a colleague has tried was manually convert one of the tables in the ...
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Normalization of Time Series Data

I have a table containing various a/b test experiment performance on a daily basis. The table structure looks something like this: date | experiment | user_count | user_attr | sales ...
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Teradata With Recursive

Hi All i'm having problems writing a recursive query and i ran out of options that i can think of . The query should join serial numbers in one cell coma delimited to a specific order number . ...
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Teradata : Disadvantage of Collect stats

I want to know any disadvantage can occur by doing collect stats on a column that is being widely used in join condition across so many procedures ? (Eg. the column is accessed 300+ times access in 60 ...
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Teradata performance statistics

I need some statistics regarding the performance of Teradata, something like with a given hardware, given nodes and given AMPs - a table which has thousands of rows can be read in 't' secs. I need ...
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Rename primary key constraint in Teradata

Does Teradata have a way to rename a primary key constraint, rather than dropping it and recreating it? I'm using SP_RENAME for SQL Server and ALTER TABLE...RENAME CONSTRAINT for Oracle, but I don't ...
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Teradata: How to design table to be normalized with many foreign key columns?

I am designing a table in Teradata with about 30 columns. These columns are going to need to store several time-interval-style values such as Daily, Monthly, Weekly, etc. It is bad design to store ...