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Old 04-04-2016, 10:32 AM   #7
theducks
Well trained by Cats
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Posts: 31,149
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Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
I am with BR on using simple (custom) columns whenever possible.

Columns built form other columns must be used when the contents is based upon a column that continuously varies (eg reading progress). Every calculation slows the application down.

For (mostly) Static values, use Bulk S&R to pre-load the custom column. Pre-loading is a single time performance hit.

use Save the Searches to periodically fill in the blanks
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