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STDDEV Function...............................................................................................................................409
Considerations for STDDEV..........................................................................................................409
Definition of STDDEV..............................................................................................................409
Data Type of the Result............................................................................................................409
Operands of the Expression.....................................................................................................409
Nulls.........................................................................................................................................409
FLOAT(54) and DOUBLE PRECISION Data............................................................................409
Examples of STDDEV....................................................................................................................410
SUBSTRING/SUBSTR Function..........................................................................................................411
Alternative Forms..........................................................................................................................411
Considerations for SUBSTRING/SUBSTR.....................................................................................411
Requirements for the Expression, Length, and Start Position.................................................411
Examples of SUBSTRING/SUBSTR...............................................................................................411
SUM Function.....................................................................................................................................413
Considerations for SUM................................................................................................................413
Data Type and Scale of the Result............................................................................................413
Operands of the Expression.....................................................................................................413
Example of SUM............................................................................................................................413
TAN Function......................................................................................................................................414
Example of TAN............................................................................................................................414
TANH Function...................................................................................................................................415
Example of TANH.........................................................................................................................415
THIS Function.....................................................................................................................................416
Considerations for THIS................................................................................................................416
Counting the Rows...................................................................................................................416
Example of THIS............................................................................................................................416
TRANSLATE Function........................................................................................................................417
TRIM Function....................................................................................................................................418
Considerations for TRIM...............................................................................................................418
Result of TRIM..........................................................................................................................418
Examples of TRIM.........................................................................................................................418
UCASE Function.................................................................................................................................419
Considerations for UCASE............................................................................................................419
Examples of UCASE......................................................................................................................425
UPPER Function..................................................................................................................................427
Example of UPPER........................................................................................................................427
UPSHIFT Function..............................................................................................................................428
Examples of UPSHIFT...................................................................................................................428
USER Function....................................................................................................................................429
Example of USER...........................................................................................................................429
VARIANCE Function..........................................................................................................................430
Considerations for VARIANCE.....................................................................................................430
Definition of VARIANCE.........................................................................................................430
Data Type of the Result............................................................................................................431
Operands of the Expression.....................................................................................................431
Nulls.........................................................................................................................................431
FLOAT(54) and DOUBLE PRECISION Data............................................................................431
Examples of VARIANCE...............................................................................................................431
WEEK Function...................................................................................................................................432
Example of WEEK.........................................................................................................................432
YEAR Function....................................................................................................................................433
Example of YEAR..........................................................................................................................433
ZEROIFNULL Function......................................................................................................................434
Example of ZEROIFNULL.............................................................................................................434
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