Using substring notation

You can select portions of a user variable by using substring notation, as shown in the following example:

<USER_VARIABLE { (start_location {, length } ) } >

The start_location and length values indicate position and count. The default start_location number is 1. If the start_location number is larger than the length of the variable, RUV substitutes a null value. Use a minus sign in the start_location value to specify a count from the end of the variable and select characters to the left by the length value. If you do not provide a length value, RUV assumes that you want to use the remainder of the string.

The following table shows examples using a job name of PRODGNL:

Notation

Result

Explanation

<PRODGNL>

PRODGNL

Default uses all characters

<PRODGNL(3,2)>

OD

Start at third character, count 2

<PRODGNL(,2)>

PR

Start at first character, count 2

<PRODGNL(5)>

GNL

Start at fifth character

<PRODGNL(9,3)>

 

9 too large, null substitution

<PRODGNL(-3)>

GNL

Go to end, move back 3

Related topic

Using-variables

 

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