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LucV
Calcite | Level 5

Hello,

 

Is it possible to use SAS to join the data from multiple data sources (for instance Teradata, SQL Server, Hadoop)?

Preferrably by writing SQL Select queries.

The data volumes in all datasources are high (GBs) and we need to minimize data replication.

 

Thanks a lot,

Lucian 

1 ACCEPTED SOLUTION

Accepted Solutions
LinusH
Tourmaline | Level 20

Not knowing about your general understanding of SAS/ACCESS processing, but I recommend first to get familiar with the documentation for your databases. Pay special attention to the difference between implicit (libname) and explicit SQL pass-through.

 

There are chapters in the documentation that discuss how to put processing done to the underlying DBMS, like joins.

But it's a special case when you have large volumes of data to join between different locations. The data needs to at some point be in a common place to make the join executed. Where that location depends on your specific situation, data, requirements, constraints etc.

 

Apart from doc there have been several SAS Global Proceedings papers discussing ACCESS to RDBMS and Hadoop.

Data never sleeps

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3 REPLIES 3
LinusH
Tourmaline | Level 20
Yes. Syntactically it's standard functionality.
But how to optimise it is a total different question and need a detail analysis.
Data never sleeps
LucV
Calcite | Level 5

Thank you Linus. Any readings you could recommend for optimizing such queries, please?

Regards,

 

LinusH
Tourmaline | Level 20

Not knowing about your general understanding of SAS/ACCESS processing, but I recommend first to get familiar with the documentation for your databases. Pay special attention to the difference between implicit (libname) and explicit SQL pass-through.

 

There are chapters in the documentation that discuss how to put processing done to the underlying DBMS, like joins.

But it's a special case when you have large volumes of data to join between different locations. The data needs to at some point be in a common place to make the join executed. Where that location depends on your specific situation, data, requirements, constraints etc.

 

Apart from doc there have been several SAS Global Proceedings papers discussing ACCESS to RDBMS and Hadoop.

Data never sleeps

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How to connect to databases in SAS Viya

Need to connect to databases in SAS Viya? SAS’ David Ghan shows you two methods – via SAS/ACCESS LIBNAME and SAS Data Connector SASLIBS – in this video.

Find more tutorials on the SAS Users YouTube channel.

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