EQUALCOVER
The EQUALCOVER
field specifier (case sensitive) allows you to find documents in which the values in all instances of a specified field are found in the set of numeric values provided in the specifier. In other words, the specifier must cover all instances of the field.
The values must be numeric. If you want to match string values, use MATCHCOVER.
NOTE: You can optimize the field specifier speed by restricting the field to the
Format
FieldText=EQUALCOVER{yourValues}:yourField
yourValues
|
One or more numeric values. A document returns only if the value in each of its instances of yourField equals one of the values in yourValues . Separate the numbers with commas. There must be no space before or after a comma. |
yourField
|
The name of the field to match against. A document returns only if:
|
Example
FieldText=EQUALCOVER{9,10,11,12}:GRADELEVEL
For a document to return as a result, its GRADELEVEL
fields must have no values that are not in the specified list. For example, if a document includes a GRADELEVEL
field with the value 8, it does not return.
(If a document has no GRADELEVEL
field at all, it returns.)