Searching with Comparison Operators

Do you want to find all the references in your project that were published after 2016? Or references that don't yet have location information? You can use comparison operators to create a very precise search in both the Quick search and Advanced search.

Greater Than and Less Than

Use these operators to find references published within a particular time span:

> Greater than

< Less than

>= Greater than or equal

<= Less than or equal

Examples:

What you want to find:

What to type in the Search criteria box:

References published before 2016

d: < 2016

References added to a Citavi project in 2016

"created on": = 2016

Thoughts and quotations that were added to a Citavi project between November 30, 2015 and March 4, 2016

"Created on": >=30.11.2015 AND "Modified on": <=4.3.2016

Please note

If you're searching fields that contain a month or day in addition to the year, for example "5-2017" or 5/15/2017, you must enter a complete date in the search field, for example ">01.01.2017"

Empty and Not Empty

To restrict a search to references with a field that is empty (or not empty, i.e. with any content in the field), use the exclamation point or asterisk:

! Is empty

* Is not empty

Examples:

What you want to find:

What to type in the Search criteria box:

References without keywords

k: !

References that have not yet been checked against the original source

"Original checked by/on": !

References with an original publication date

Original publication: *

Advanced

To find references (search shortcut rc) or knowledge items (search shortcut kic) within a specific category or sub-category, enter the number of the category (in the examples below: 4) and then add one or two plus signs.

What you want to find:

What to type in the Search criteria box:

All reference within a category and its subcategories

rc: 4+

All reference within a category

rc: 4++