Examples: FILL with a Constant Value - Advanced SQL Engine - Teradata Database

Example: Invalid Case: Fill with an Incompatible Constant Value

In the example the data type of the constant is incompatible with the data type of the data being aggregated, in this case TEMPERATURE:

SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 09:45:00' AND TIMESTAMP '2014-01-06 11:45:00'
AND BUOYID=44
GROUP BY TIME (MINUTES(15) AND BUOYID) FILL('a')
ORDER BY 2,3;

*** Failure 3706 Data type specified in FILL clause is incompatible with input 
data types to some aggregate functions.

Example: Fill with a Constant Value

The example shows a query when the FILL clause is used with a constant value with a compatible data type:

SELECT $TD_TIMECODE_RANGE, $TD_GROUP_BY_TIME, BUOYID, AVG(TEMPERATURE)
FROM OCEAN_BUOYS
WHERE TD_TIMECODE BETWEEN TIMESTAMP '2014-01-06 09:45:00' AND TIMESTAMP '2014-01-06 11:45:00'
AND BUOYID=44
GROUP BY TIME (MINUTES(15) AND BUOYID) FILL(45)
ORDER BY 2,3;

Result: The timebuckets with no value are included in the result set with the specified constant value returned in place of the missing values.