How to use Lookup functions SSRS

SSRS Lookup functions allow you to combine data from two datasets in a single data region. There are different types of lookup functions: Lookup LookupSet MultiLookup Lookup The Lookup function is used for an 1-1 relation between two dataset. LookupSet The LookupSet function is used for an 1-N relation between two dataset: Usually, LookupSet is ...

Deserialization failed: The ‘DataType’ attribute is not declared

deserialization failed Deserialization failed: The ‘DataType’ attribute is not declared. Line X, position Y. Solitamente l’errore si verifica sui report che possiedono parametri con valori statici o di default, oppure quando il progetto viene migrato ad una nuova versione di SSRS.Per risolvere il problema occorre modificare opportunamente la definizione XML del report, rimuovendo l’attributo DataTypedal ...