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I'm selecting and styling my points layer on a contour map of Philadelphia using Rules Based Styling. (see: Can I use rules based rendering in QGIS to select features?). The filtering process using [string_field = 'string'] turns out not to be accurate for one of my three rules. I have 'Homocide - Justifiable' and it returns points with (at least) 'Thefts'.

I'd like to try another expression. In any case it would be nice to have a list of all the possible expressions.

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That question link seems dead. – Nathan W Jun 4 '13 at 0:51

The full function reference is available directly in the query builder:

enter image description here

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