A basic filter expression. Usually is a part of
field? string | Function
The data item field to which the filter operator is applied.
Determines if the string comparison is case-insensitive.
operator string | Function
The filter operator (comparison).
The supported operators are:
"neq"(not equal to)
"isnull"(is equal to null)
"isnotnull"(is not equal to null)
"lte"(less than or equal to)
"gte"(greater than or equal to)
The following operators are supported for string fields only:
The value to which the field is compared. Has to be of the same type as the field.