performance - SQL Server Stored Procedures Execution difference -


i have sql server 2016. there 2 absolutely same stored procedures different names, execute differently. first completes in 17 minutes, other in 18 second. first created before index on 1 of elements created, recompiled , cleared plans plan cache. result not change.

what problem can , how reconfigure execution plan?

to improve performance of stored procedure must executed script lower. can recreate execution plan.

exec sp_recompile n'procedurename';  go  dbcc freeproccache no_infomsgs; go exec sp_updatestats;  go

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