SAS/ACCESS 9.2 for Relational Databases: Reference, Fourth Edition

548 Data Types for Greenplum 4 Chapter 173 A name can contain as many as 128 characters.3 The first character in a name can be a letter or @, _, or #.3 A name cannot be a Greenplum reserved word, such as WHERE or VIEW.3 A name must be unique within each type of each object.For more information, see the Greenplum Database Administrator Guide.Data Types for GreenplumOverviewEvery column in a table has a name and a data type. The data type tells Greenplumhow much physical storage to set aside for the column and the form in which the datais stored. This section includes information about Greenplum data types, null anddefault values, and data conversions.For more information about Greenplum data types and to determine which datatypes are available for your version of Greenplum, see the Greenplum DatabaseAdministrator Guide.SAS/ACCESS Interface to Greenplum does not directly support any data types thatare not listed below. Any columns using these types are read into SAS as characterstrings.String DataCHAR(n)specifies a fixed-length column for character string data. The maximum length is32,767 characters. If the length is greater than 254, the column is a long-stringcolumn. SQL imposes some restrictions on referencing long-string columns. Formore information about these restrictions, see the Greenplum DatabaseAdministrator Guide.VARCHAR(n)specifies a varying-length column for character string data. The maximum lengthis 32,767 characters. If the length is greater than 254, the column is a long-stringcolumn. SQL imposes some restrictions on referencing long-string columns. Formore information about these restrictions, see the Greenplum DatabaseAdministrator Guide.LONG VARCHAR(n)specifies a varying-length column for character string data. The maximum size islimited by the maximum size of the database file. To determine the maximum sizeof your database, see the Greenplum Database Administrator Guide.Numeric DataBIGINTspecifies a big integer. Values in a column of this type can range from–9,223,372,036,854,775,808 to +9,223,372,036,854,775,807 .