Matching Null and Blank Values in a field
To match records that have a blank or null value in a field,
choose "equals" and then type "null" into the box as the value to match.
Example Find records where loc_prefix is blank, and loc_suffix is "--".
Loc Prefix
Loc Suffix
Using "or" to match multiple values in a field
To create a query that matches more than one value in a field by using
the pipe symbol ("|") between the values you want to match.
Example find records where Type is either "fig" or "publ"
Type
Query Help
University of California Museum of Paleontology
