| BaseX specific: Either wildcard or the [[Full-Text#Fuzzy_Querying|fuzzy option]] can be chosen at the same time.
|<code>'a' contains text 'a' using wildcards using fuzzy</code>
|- valign="top" scope="row"
|<code>FTST0000</code>
| BaseX specific: Thesaurus level must be a constant integer.
|<code>for $x in 1 to 5 return 'a' contains text 'a' using thesaurus at "..." exactly $x levels</code>
|- valign="top" scope="row"
|<code>FTST0007</code>