17.10 - Usage Notes - Advanced SQL Engine - Teradata Database

Teradata Vantage™ - Data Types and Literals

Product
Advanced SQL Engine
Teradata Database
Release Number
17.10
Release Date
July 2021
Content Type
Programming Reference
Publication ID
B035-1143-171K
Language
English (United States)

Internal Representation of INTERVAL HOUR TO MINUTE

Field Storage Format Total Length
HOUR SMALLINT 4 bytes
MINUTE SMALLINT

External Representation of INTERVAL HOUR TO MINUTE

INTERVAL HOUR TO MINUTE types are imported and exported in record and indicator modes as CHARACTER data using the client character set.

Type Format
CHARACTER(precision + 4) '-h(precision):mm'

For example, for INTERVAL HOUR(2) TO MINUTE, a value might be '  17:37 '.

Range of Values

The range of values for INTERVAL HOUR TO MINUTE is as follows.

Type and Precision Minimum Value Maximum Value
INTERVAL HOUR(1) TO MINUTE -'9:59' '9:59'
INTERVAL HOUR(2) TO MINUTE -'99:59' '99:59'
INTERVAL HOUR(3) TO MINUTE -'999:59' '999:59'
INTERVAL HOUR(4) TO MINUTE -'9999:59' '9999:59'
Decimal values are not allowed for Interval data types except for second intervals.

Implicit and Explicit INTERVAL HOUR TO MINUTE Conversion

Vantage performs implicit conversion from one Interval data type to another Interval type in some cases. You can also use CAST to explicitly convert one Interval type to another.

Conversions are possible only within the same INTERVAL family. For example, you may convert a YEAR interval to months, but not to days or hours.

For more information, see Teradata Vantage™ - SQL Functions, Expressions, and Predicates, B035-1145.