SQL Server Migration from 2008 R2 to 2014 -


we have migrated database sql server 2008 r2 sql server 2014 of backup/restore method. database in sql server 2014 , has compatibility level 100, didn't change 120.

if change 120, flush query plans? in sql server 2014, microsoft has rewritten cardinality estimator. flush old plan , regenerate plan according new cardinality estimator? can explain or point reference can understand clearly?


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