INTERVAL data type
Informix®
Informix provides the INTERVAL data type to store a value that represents a
span of time.
INTERVAL types are divided into two classes:- Intervals of year-month class such as
INTERVAL YEAR(5) TO MONTH - Intervals of day-time class such as
INTERVAL DAY(9) TO SECOND
INTERVAL columns can be defined with various time units, by specifying a
start and end qualifier. For example, you can define an interval to store a number of hours and
minutes with INTERVAL HOUR(n) TO MINUTE, where
n defines the maximum number of digits for the hours unit.The values of Informix
INTERVAL can be represented with a
character string literal, or as INTERVAL()
literals:'-9834 15:45:12.345' -- an INTERVAL DAY(6) TO FRACTION(3)
'7623-11' -- an INTERVAL YEAR(9) TO MONTH
INTERVAL(18734:45) HOUR(5) TO MINUTE
INTERVAL(-7634-11) YEAR(5) TO MONTHMicrosoft™ SQL Server
Microsoft SQL Server does not provide a
data type corresponding the Informix
INTERVAL data type.
Solution
The INTERVAL data type and values are converted CHAR(50) column
with IBM® DB2®.
INTERVAL values can be stored and retrieved from the database. However, since
IBM DB2 does not support
a native interval type, arithmetics cannot be performed on the database side in SQL statements.
The
INTERVAL types translation can be controlled with the following FGLPROFILE
entry:dbi.database.dsname.ifxemul.datatype.interval = { true | false }