# Unary SQL Sequence Functions

> The following unary functions take a single input sequence, apply the specified operation and return a sequence of the same type.

> seq_abs( input ) | Return the sequence of absolute values of the input sequence's elements
> seq_neg( input ) | Return the sequence of the negative of the input sequence's elements

> ## Example

> Following is an example code snippet demonstrating the unary operator functions:

>         -- seq_abs, seq_neg

>         INSERT INTO SimpleSequence(testNumber,iVal1)
>             VALUES(1,'{-3,-2,-1,0,1,2,3}');

>         SELECT iVal1, seq_abs(iVal1) AS "abs" FROM SimpleSequence WHERE testNumber = 1;
>         SELECT iVal1, seq_neg(iVal1) AS "neg" FROM SimpleSequence WHERE testNumber = 1;

>         iVal1{}
>         abs{}
>         ---------------------------------------------------------
>         {-3, -2, -1, 0, 1, 2, 3}
>         {3, 2, 1, 0, 1, 2, 3}

>         iVal1{}
>         neg{}
>         ---------------------------------------------------------
>         {-3, -2, -1, 0, 1, 2, 3}
>         {3, 2, 1, 0, -1, -2, -3}