Used to get and set the interval value as string.
property AsString: string;
Use the AsString property to get and set the interval value as string. Oracle establishes certain formats for each interval type.
INTERVAL YEAR TO MONTH format:
'[year-]month'.
INTERVAL DAY TO SECOND formats:
'seconds',
'minutes[:seconds]',
'hours[:minutes:[seconds]]',
'days[ hours[:minutes:[seconds]]]'.
Optional fields are surrounded by brackets.
Reading AsString property when IsNull is True returns an empty string.