Boolean Tutorial for EMM Survey Registry
You will be able to conduct Boolean searches in our EMM Survey Registry. Please consult the table below regarding the special character(s) you will need to use. For more detailed information about Boolean searches and the logic adopted by our registry, please consult the following GitHub page: Full-text queries
Character |
Explanation |
| + | Acts as the AND operator
Example: Roma+Hungary |
| | | Acts as the OR operator
Example: Albanian|Serbian |
| * | Serves as the wildcard
Example: Rom* |
| “” | Wraps together terms into a phrase
Example: “Ethnic minorities” |
| () | Wraps together a clause for precedence
Example: (Ethnic minorities) |
| ~n | After a term: Sets fuzziness (fuzziness = match all terms with up to a certain number of characters added, deleted, or changed)
Example: Rom~2 — After a phrase: Sets slop (slop = match all terms in a query with up to a certain number of misorderings) Example: ~2Rom |
| – | Negates a term
Example: -Rural |
| NOTE: This table is an adaptation of the table found in the GitHub page: Full-text queries | |