Gets the where condition of the search field. This should be a sql statement that can be placed after "WHERE" in the sql query. A couple of examples: "id > 5", "(solved = 1) AND (tested = 0)".
An optional callback that will be used by the search field to process parameters before they are used in the sql query. The callback should take one value which is the value of the parameter from $_REQUEST and return one value, which is the desired value to use. The default is that wilcards (*) are converted to LIKE wildcards.
Overrides SearchField::getSqlWhereCondition() (Gets the where condition of the search field. This should be a sql statement that can be placed after "WHERE" in the sql query. A couple of examples: "id > 5", "(solved = 1) AND (tested = 0)".)