Tamino XQuery User Guide - Software AG Documentation

Text Retrieval
for $a in input()/patient
where $a/name = "Maier"
return $a/name
or you can use tf:containsText:
for $a in input()/patient
where tf:containsText($a/name, "Maier")
return $a/name
Unfortunately, there are at least four variants of the name which are all pronounced :
"Maier", "Mayer", "Meier", and "Meyer". Instead of constructing long Boolean expressions that try
to cover all existing homophones, you can use tf:phonetic in the scope of one of the search
functions:
for $a in input()/patient
where tf:containsText($a/name, tf:phonetic("Maier"))
return $a/name
This query will return all patients whose names sound like .
Tamino uses a set of rules to determine phonetic equivalency. There are rules pre-defined, which
are explained in more detail in the reference documentation to tf:phonetic. These rules are suitable
for German and English, but you can create your own set of rules. See the section Rules for Searches
Using Phonetic Values and Stemming below.
Note: You can not use tf:phonetic standalone, but only in the context of one of the following
functions: tf:containsText, tf:containsAdjacentText, tf:containsNearText,
tf:createAdjacentTextReference, tf:createNearTextReference,
tf:createTextReference. This means that the result of calling this function in another
context is unspecified and might change in a future Tamino version.
Stemming
A corpus with text in an inflecting language such as English or German often contains words in
inflected forms: nouns are declined and verbs are conjugated: "The nightingales were singing in
the trees." If you want to search for all occurrences of the verb "to sing" or of the nouns "nightingale"
and "tree", you need to know how these words are inflected and derived. One method is to reduce
any inflected form to its word stem. It is the stem to which morphemes are attached to construct
a certain grammatical form: So "were" + "sing" + "-ing" indicates the past continuous tense of the
verb "to sing".
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XQuery User Guide