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    %INDEX Built-In Function

    The %INDEX function is one of the functions that up until recently I was unaware of. It is really handy when you are manipulating multiple-occurrence data structures. It is even more useful when used in conjunction with the _QRNU_DSI_xxxx built-in value (where xxxx = the name of a multi-occurrence data structure). The command EVAL _QRNU_DSI_xxxx will return the current occurrence of a multiple-occurrence data structure. This is often a very useful thing to know during program execution and as far as I know this is the only way to get it. By using the %INDEX function you can also change the current o

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    %INDEX Built-In Function

    The %INDEX function is one of the functions that up until recently I was unaware of. It is really handy when you are manipulating multiple-occurrence data structures. It is even more useful when used in conjunction with the _QRNU_DSI_xxxx built-in value (where xxxx = the name of a multi-occurrence data structure). The command EVAL _QRNU_DSI_xxxx will return the current occurrence of a multiple-occurrence data structure. This is often a very useful thing to know during program execution and as far as I know this is the only way to get it. By using the %INDEX function you can also change the current

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    iscover something new, so I thought I'd share what I learned with you.

    %INDEX Built-In Function

    The %INDEX function is one of the functions that up until recently I was unaware of. It is really handy when you are manipulating multiple-occurrence data structures. It is even more useful when used in conjunction with the _QRNU_DSI_xxxx built-in value (where xxxx = the name of a multi-occurrence data structure). The command EVAL _QRNU_DSI_xxxx will return the current occurrence of a multiple-occurrence data structure. This is often a very useful thing to know during program execution and as far as I know this is the only way to get it. By using the %INDEX function you can also change the current

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    multiple-occurrence data structures. It is even more useful when used in conjunction with the _QRNU_DSI_xxxx built-in value (where xxxx = the name of a multi-occurrence data structure). The command EVAL _QRNU_DSI_xxxx will return the current occurrence of a multiple-occurrence data structure. This is often a very useful thing to know during program execution and as far as I know this is the only way to get it. By using the %INDEX function you can also change the current
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    ent occurrence of a multiple-occurrence data structure. This is often a very useful thing to know during program execution and as far as I know this is the only way to get it. By using the %INDEX function you can also change the current occurrence of a multiple-occurrence data structure. See below.

    d WorkMultDS1 ds occurs(30)

    d StringA 10a

    d StringB 25a

    To find the current occurrence of the data structure without changing it:

    Command: EVAL _QRNU_DSI_WorkMultDS1

    Result: 1 (or whatever the current occurrence of WorkMultDS1 is)

    To change the current occurrence:

    Command: WorkMultDS1 = %INDEX(12)

    Result: WorkMultDS1 = %INDEX(12) = 12

    After issuing the above command interrogated subfields will reflect the values of the twelfth occurrence of the data structure.

    %SUBSTR Built-In Function

    This function is really convenient when you are working with large strings. Using the EVAL function by itself will only display only the first 500 characters of a field. As a side note, the easy solution to that problem is to append the type and length to the EVAL function as shown below:<

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