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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teradata database unable to increase database size in permanent space

Anyone with teradata database experience? I'm new to this database and I've been tasked to increase the size of a database. I am using Teradata Administrator to do this. I am using Tools > Modify ...
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Why does a table take more space in SQL server than in Teradata? [closed]

Is there any reason for a table to occupy significantly more space in SQL server than Teradata? The rows and data structure (columns, data types, data type length) are same, no extra objects like ...
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Granting permission on an altered table in Teradata

I have a table, which has two columns say A and B as part of the Primary index PI_AB. I have to alter the length of B column - increase it. I was planning to alter the primary index to just have A, ...
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Convert Teradata Database to SQL Server 2012 [closed]

I am just wondering if anyone has any experience, knowledge, or recommendations on migrating a Teradata database to SQL Server 2012. I have never worked with Teradata before so I am unfamiliar with ...
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266 views

Teradata SQL Assistant - List tables under DBC in the Database Explorer

I am able to query, but under DBC, in the Database Explorer, I do not see the list of tables. That also makes it impossible for me to qualify name and get any kind of ide support while writing my ...
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Best practice - use of derived table or use the original table in join?

Imagine I have the following tables in Teradata : TableA : Field1|Field2|Field3 TableB : Field1|Field4|Field5 I am trying to join these two tables Method 1 : SEL TableA.Field3, TableB.Field4 ...
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258 views

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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685 views

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 : 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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235 views

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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515 views

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 ...