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Search Query | Results will contain |
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cancer | cancer, cancers, and synonyms such as tumors |
heart attack | heart and attack, as well as synonyms of "heart attack" such as "myocardial infarction" |
"heart attack" | the literal words "heart attack" must be found |
"heart attack"~3 | stemmed variations of heart and attack within 3 words of each other |
heat~ | stemmed variations of heat and words whose spelling is similar such as heart, wheat, cheat, meat, etc. |
heart* | words beginning with heart |
crab OR lobster OR shrimp | any of the words crab, lobster, or shrimp |
crab || lobster || shrimp | any of the words crab, lobster, or shrimp (same as above) |
bank AND loan AND business | all of the words bank, loan, and business |
bank +loan +business | all of the words bank, loan, and business (same as above) |
bank && loan && business | all of the words bank, loan, and business (same as above) |
bank NOT river | the word bank but not the word river |
bank -river | the word bank but not the word river (same as above) |
Title:smoking | Retrieve items with smoking in the Title field of the item's metadata. Many fields are searchable. |
Date:[1954-01-01 TO 1960-12-31] | Retrieve items with terms within the range of 1954 to 1960. |
Operator | Definition | Example |
---|---|---|
AND + && |
Intersection - Retrieve documents containing all words or phrases (and synonyms) connected by the AND operator. This is the default operator if none is specified | leukemia AND chemotherapy heart +lung heart && lung heart lung |
OR || |
Union - Retrieve documents containing any of the specified words or phrases (and synonyms) connected by the OR operator | aspirin OR ibuprofen |
NOT - |
Difference - Retrieve documents that do not contain the word or phrase (and synonyms) following the NOT operator | Immunodeficiency NOT AIDS heart -kidney |
" " | Multi-Word - Retrieve documents containing the exact word phrase as specified between the quotes (and synonyms) | "heart attack" |
" "~4 | Proximity - Retrieve documents containing the exact words separated by no more than the specified number of words (4 in this case) | "heart lung"~4 |
term~ | Close To - Retrieve documents with terms that are close to (similar to) the specified term | java~ finds lava |
term* | Wild Card - Retrieve documents with terms beginning with the specified characters | heart* finds heartache |
[low TO high] | Range - Retrieve items with terms within the range of low to high. A value of * means lowest or highest respectively. | [1954 TO 1960] |
Notes on Operators
Often there are multiple names (synonyms) for a single concept (e.g., cancer of the colon, colonic neoplasm, colon cancer, etc.). Thus, searching automatically adds terms related to those you entered. For example, when using the phrase heart attack in a search, the related phrase myocardial infarction will automatically be added.
Date Comparison Operators:
Note: These operators are only available for Fielded Searches. They are selected using the pulldown list of operators associated with each Date Field.
Operator | Date Meaning |
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< | Before |
<= | Before or On (inclusive) |
= | Only on this date |
not = | NOT on this date |
>= | After or On (inclusive) |
> | After |
Date Field Examples:
Starting Date Field | Ending Date Field | Meaning |
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1997-03-23 | blank | Date is March 23, 1997 or later |
1997-03-23 | 1997-03-23 | Date is March 23, 1997 |
blank | 1997-03-23 | Date is March 23, 1997 or earlier |
1997-03-23 | 1999-01-02 | Date is between March 23, 1997 and January 2, 1999, inclusive |