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call

snap_searchPlus(p_search,

p_filter);

p_search

A search term string.

These searches use MySQL's fulltext index employing one of the two supported search modes depending on the string supplied.

If p_search includes plus "+" or minus "-" symbols, the search is performed using boolean mode. This means matches are only returned if all words preceded by "+" are present and none of the words "-". Word not preceded by either plus or minus, are not required to match but will contribute to the search. The results of this search are sorted by with the shortest matching terms first.

If p_search does not include "+" or "-" symbols, the MySQL natural language search is used. It also orders the returned results by 'relevance' and is intended to assist contextual searching through literature. However, our testing indicate that the boolean mode is usually more effective for SNOMED CT searches.

For more information about full text searches in MySQL please see Full-Text Search Functions in the MySQL Reference Manual.

'+fundus +stomach'

'+lung +disease +chronic'

'appendix'

'hemoglobin'

'infection'

A filter that will be applied to selectively include concepts that are subtype descendants of a specified concept:

• a simple focus concept subtype constraint.
  • Starting with a less than sign < followed either by either
    • a conceptId; or
    • a shortcut abbreviation for a commonly used concept. To see the current set of shortcuts run the following query "SELECT * FROM config_shortcutPlus;"

A regular expression pattern to be used to filter terms returned by the search string

• a regular expression to exclude matching terms
  • Starting this with an exclamation mark ! followed by the regular expression you want to exclude for the terms found by p_search.
• a regular expression required for inclusion
  
  • The text of the regular expression that must be matched for inclusion.

'<find'

'<proc'

'<123037004'

'!lung'

'heart'

Viral pneumonia associated with acquired immunodeficiency syndrome

Viral pneumonia associated with acquired immunodeficiency syndrome (disorder)