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1 Teradata DatabaseSQL data Types and LiteralsRelease 2010 The product or products described in this book are licensed products of Teradata Corporation or its , BYNET, DBC/1012, DecisionCast, DecisionFlow, DecisionPoint, Eye logo design, InfoWise, Meta Warehouse, MyCommerce, SeeChain, SeeCommerce, SeeRisk, Teradata Decision Experts, Teradata Source Experts, WebAnalyst, and You ve Never Seen Your Business Like This Before are trademarks or registered trademarks of Teradata Corporation or its and SCSIS elect are trademarks or registered trademarks of Adaptec, Opteron and Opteron are trademarks of Advanced Micro Devices, and NetVault are trademarks or registered trademarks of BakBone Software, , PowerPath, SRDF, and Symmetrix are registered trademarks of EMC is a trademark of GoldenGate Software, and HP are registered trademarks of Hewlett-Packard , Pentium, and XEON are registered trademarks of Intel , CICS, RACF, Tivoli, and z/OS are registered trademarks of International Business Machines is a registered trademark of Linus and Engenio are registered trademarks of LSI , Active Directory, Windows, Windows NT.

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5 Teradata Corporation will have no obligation of any kind with respect to Feedback and will be free to use, reproduce, disclose, exhibit, display, transform, create derivative works of, and distribute the Feedback and derivative works thereof without limitation on a royalty-free basis. Further, Teradata Corporation will be free to use any ideas, concepts, know-how, or techniques contained in such Feedback for any purpose whatsoever, including developing, manufacturing, or marketing products or services incorporating 2000 2010 by Teradata Corporation. All Rights data Types and Literals3 PrefacePurposeSQL data Types and Literals describes how to use data Types and Literals within Teradata this book in conjunction with the other books in the SQL book administrators, database administrators, and security administrators are the principal audience for this book.

6 Teradata field engineers and other technical personnel responsible for designing and maintaining Teradata Database may also find this book Software ReleaseThis book supports Teradata Database You should be familiar with basic relational database management technology and SQL. This manual is not an SQL you are not familiar with Teradata Database, you may find it useful to read Introduction to Te r a d a t a before reading this additional information about developing applications using embedded SQL, see Te r a d a t a Preprocessor2 for Embedded SQL Programmer information about geospatial Types .

7 See SQL Geospatial to This Book4 SQL data Types and LiteralsChanges to This BookReleaseDescriptionTe r a d a t a D a t a b a s e 2010 Added an example of a Period literal that uses the UNTIL_CHANGED r a d a t a D a t a b a s e 2009 Clarified rounding of FLOAT, REAL, DOUBLE PRECISION data r a d a t a D a t a b a s e 2009 Added clarification that UDTs cannot be used as input arguments and return values of UDFs written in Java, and they cannot be used as IN, INOUT, and OUT parameters of external stored procedures written in Java. Added information about Period data Types . Documented that individual UDTs can be archived, copied, or restored.

8 Removed the restriction that prohibits using UDTs in conjunction with recursive queries. Added information about dynamic UDT (VARIANT_TYPE UDT). Added additional information about implicit conversion of DateTime data Types . Documented that COMPRESS cannot be specified for any partitioning columns of a PPI partitioning expression. Added new section about data type attributes and r a d a t a D a t a b a s e 2007 Addition of material to support Unicode character string Literals , hexadecimal name Literals , and Unicode delimited identifiers Addition of material to explain the use of the DECIMALDIGITS BTEQ command to set the maximum precision for decimal values Addition of material to support implicit conversion of DateTime data typesPrefaceAdditional InformationSQL data Types and Literals5 Additional InformationTo maintain the quality of our products and services, we would like your comments on the accuracy.

9 Clarity, organization, and value of this document. Please e-mail: to Microsoft Windows and LinuxThis book refers to Microsoft Windows and Linux. For Teradata Database , these references mean: Windows is Microsoft Windows Server 2003 the Teradata Information Products Publishing Library site to: View or download a manual:1 Under Online Publications, select General your search criteria and click Search. Download a documentation CD-ROM:1 Under Online Publications, select General the Title or Keyword field, enter CD-ROM, and click Search. Order printed manuals:Under Print & CD Publications, select How to Teradata home page provides links to numerous sources of information about Teradata.

10 Links include: Executive reports, case studies of customer experiences with Teradata, and thought leadership Technical information, solutions, and expert advice Press releases, mentions and media Customer Education designs, develops and delivers education that builds skills and capabilities for our customers, enabling them to maximize their Teradata Teradata @ Your Service to access Orange Books, technical alerts, and knowledge repositories, view and join forums, and download software Developer Exchange provides articles on using Teradata products, technical discussion forums, and code to Microsoft Windows and Linux6 SQL data Types and Literals Linux is SUSE Linux Enterprise Server 9 and SUSE Linux Enterprise Server to Microsoft Windows and LinuxSQL data Types and Literals7 PrefaceReferences to Microsoft Windows and Linux8 SQL data Types and LiteralsSQL data Types and Literals9 Table of ContentsPreface.