Checks the existance of data.
Optional_data: unknownChecks whether value is less than or equal to (i.e. <=) the query.
Optional_data: unknownChecks whether value is greater than or equal to (i.e. >=) the query.
Optional_data: unknownCasts a boolean.
Optionalvalue_: unknownOptionaldata: unknownCompares data. This function is used when sorting.
Checks the equality of data.
Optional_data: unknownParses data and transform them into boolean values.
Checks the existance of data.
Optional_data: unknownChecks whether value is greater than (i.e. >) the query.
Optional_data: unknownChecks whether value is greater than or equal to (i.e. >=) the query.
Optional_data: unknownChecks whether value is equal to one of elements in query.
Optional_data: unknownChecks whether value is less than (i.e. <) the query.
Optional_data: unknownChecks whether value is less than or equal to (i.e. <=) the query.
Optional_data: unknownChecks the equality of data. Returns true if the value doesn't match.
Optionaldata: unknownChecks whether value is not equal to any elements in query.
Optional_data: unknownRenames a field.
Validates a boolean.
Optionaldata: unknownTransforms data into number to compress the size of database files.
Boolean schema type.