17.10 - Usage Notes - Advanced SQL Engine - Teradata Database

Teradata Vantageā„¢ - 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 DAY TO MINUTE

Conceptually, INTERVAL DAY TO MINUTE is a record that has the following fields.

Field Name Storage Format Total Length
DAY SMALLINT 8 bytes (with 2 pad bytes)
HOUR SMALLINT
MINUTE SMALLINT

External Representation of INTERVAL DAY TO MINUTE

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

Type Format
CHARACTER(precision + 7) '-d(precision) hh:mm'

For example, for INTERVAL DAY (3) TO MINUTE, the value might be something like '-127 12:37'.

Range of Values

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

Type and Precision Minimum Value Maximum Value
INTERVAL DAY(1) TO MINUTE -'9 23:59' '9 23:59'
INTERVAL DAY(2) TO MINUTE -'99 23:59' '99 23:59'
INTERVAL DAY(3) TO MINUTE -'999 23:59' '999 23:59'
INTERVAL DAY(4) TO MINUTE -'9999 23:59' '9999 23:59'
Decimal values are not allowed for Interval data types except for second intervals.

Implicit and Explicit INTERVAL DAY 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 Vantageā„¢ - SQL Functions, Expressions, and Predicates, B035-1145.