The below example resolves to the number of enabled 2.4 GHz radios in the current context. So for instance if you wanted to count number of access points on a floor you would have to do so within the "floor" loop's context and not within the an inner "aps" loop context (where count would always be 1).
Please be aware that the count includes only objects in the current context. Loop tag attributes are documented here: Loop Tag Specification chapter. So to get a count of an object type within the current context just write a count tag with the same attributes as you would a loop-start tag that would iterate the objects you wish to count. Using our example table from earlier, this would be: SELECT COUNT () FROM mytable WHERE mycolumn IS NULL This is a common and fundamental data quality check.
Essentially the count tag resolves to a number equal to how many times a loop with identical attributes would iterate. Here's the simplest way to count NULL values in SQL The easiest way to count the NULLs in a column is to combine COUNT () with WHERE
The count tag shares all attributes of loop-start tag.
It allows a template to show the number of elements on any object type within the current context. The count tag was introduced in ESS 8.1.0.
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