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perfect_sample_rows
Scott C Gray edited this page Feb 26, 2017
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perfect_sample_rows - Controls the display of query footer information
The ${perfect_sample_rows} determines the number of rows that are
sampled (held in memory) by perfect result renderers (such as used
by the "perfect" display style) before results are displayed. The
larger this number, the better the results will be rendered, however
the more memory will be consumed as all the rows must be held in memory
before display.
A value less than 1 indicates that all rows will be sampled prior to display. The default value is 500.