ReadRecords (Dataset function): Difference between revisions

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<tr><th><var>Max</var></th>
<tr><th><var>Max</var></th>
<td>This is an optional, [[Notation conventions for methods#Named parameters|name required]], numeric argument that sets an upper limit for the number of records to be read in by the method. Assuming that this can be catered for by the CCATEMP resources of the job, the count method against the target <var>Stringlist</var> object would return the same value as the <var>MAX</var> setting after the <var>ReadRecords</var> invocation completes.
<td>This is an optional, [[Notation conventions for methods#Named parameters|name required]], numeric argument that sets an upper limit for the number of records to be read in by the method. Assuming that this limit can be accommodated by the CCATEMP resources of the job, the <var>Count</var> method against the target <var>Stringlist</var> object after the <var>ReadRecords</var> invocation completes will return the same value as the <var>Max</var> setting.
<p>
The default limit is [[??]].</td></tr>
The default limit is to read all the records from the input dataset. </p></td></tr>


<tr><th><var>Min</var></th>
<tr><th><var>Min</var></th>
<td>This is an optional, name required, numeric argument that sets a minimum number of records to be read via the method. If this minimum number of record reads is not achieved, the request is cancelled with:
<td>This is an optional, name required, numeric argument that sets a minimum number of records to be read via the method. If this minimum number of record reads is not achieved, the request is cancelled with:
<p class="code">Cancelling request: MSIR.0752: ... too few records available to meet requested minimum </p>
<p class="code">MSIR.0752: ... too few records available to meet requested minimum </p>
<p>
<p>
The default minimum value is [[??]]. </p></td></tr>
There is no default minimum value. </p></td></tr>
</table>
</table>



Latest revision as of 12:21, 25 April 2017

Read multiple records from this dataset (Dataset class)


This page is under construction.

Syntax

%sl = dataset:ReadRecords[( [Max= number], [Min= number])]

Syntax terms

%stringlist A Stringlist object variable to receive the blocks of data.
dataset A reference to an instance of a Dataset object.
Max This is an optional, name required, numeric argument that sets an upper limit for the number of records to be read in by the method. Assuming that this limit can be accommodated by the CCATEMP resources of the job, the Count method against the target Stringlist object after the ReadRecords invocation completes will return the same value as the Max setting.

The default limit is to read all the records from the input dataset.

Min This is an optional, name required, numeric argument that sets a minimum number of records to be read via the method. If this minimum number of record reads is not achieved, the request is cancelled with:

MSIR.0752: ... too few records available to meet requested minimum

There is no default minimum value.

Usage notes

Examples

See also