Using Logical Operators
|
Character |
Operator |
Explanation |
Example |
Queries For |
|---|---|---|---|---|
|
/ |
Contains |
Contains a given string. |
/Contrast |
Procedure descriptions with the word Contrast. |
|
\ |
Does not contain |
Does not contain the given string. |
\Contrast |
Any string that does not contain Contrast. |
|
| |
Or |
Disjoins the expressions on either side of the operator. |
x or y |
Returns data that contain both x or y, but not both. |
|
& |
And |
Conjoins the expressions on either side of the operator. |
x and y |
Returns data that contain both x or y. |
General Guidance for Logical Operators
The following are examples of potential search queries using special characters and combinations of special characters.
|
Character |
Operator |
Explanation |
|---|---|---|
|
x&y |
x AND y |
Returns data that satisfies both conditions. |
|
x|y |
is x OR y |
Returns data that satisfies any of the conditions. |
|
x& |
x AND no condition |
Returns data that satisfies x. |
|
&x |
No condition AND x |
Returns data that satisfies x. |
|
x| |
x OR no condition |
Returns everything. |
|
|x |
No condition OR x |
Returns everything. |
Logical Operators Samples
- To find studies with image count less than 10 or image count greater than 1000: enter <10|>1000 into the Image Count QBE field.
- To find studies with a Proc Description starting with DIG and containing BI: enter DIG&/BI into the Proc Description QBE field.