“Your query is malformed. Please rephrase your query.”
When performing a search the error message “Your query is malformed. Please rephrase your query.” may appear instead of search results in certain conditions:
1. Wrong search syntax was used in the query. For example, when using logical operators, they need to be placed correctly between keywords.
The solution in this case is to examine the query made (check the search fields, or search URL) and correct the query accordingly.
2. A limitation exists for naming of Ontolica Search searchable properties, as well as SharePoint managed properties. The following words should not be used to name these properties: SELECT, FROM, WHERE, ORDER BY, SET, AND, OR, NOT.
The solution in this case is to rename Ontolica properties as well as SharePoint managed properties, so that the SQL reserved keywords are not used any more.