According to MSDN article, ‘DISABLE_PARAMETER_SNIFFING’ instructs Query Optimizer to use average data distribution while compiling a query with one or more parameters. This instruction makes the query plan independent on the parameter value that was first used when the query was compiled. This hint name is equivalent to trace flag 4136 or Database Scoped Configuration setting PARAMETER_SNIFFING = OFF.
Looks like it’s a pretty good hint, However, it doesn’t means you can resolve all parameter sniffing issue by using this query hint.
Actually, the sentence ‘Query Optimizer to use average data distribution while compiling a query with one or more parameters’ is