Find outdated statistics in SQL Server

SQL server uses the STATISTICS to find the appropriate Query plan.

if you are experiencing performance issues for your queries than it may be due to outdated statistics. An outdated statistic can make the sql server choose a wrong plan, use the following query to find outdated stats:

SELECT OBJECT_NAME(ID) AS [Table], SI.Name, STATS_DATE(ID, IndID) AS [Date Last Update], RowModCtr [Rows Modified Since Last Update]

FROM SYS.Tables AS ST INNER JOIN SYS.SYSIndexes AS SI ON SI.[ID] = ST.[object_ID]

INNER JOIN SYS.Schemas AS SS ON ST.[schema_ID] = SS.[Schema_ID]

WHERE STATS_DATE(ID, IndID) <= DATEADD(DAY,-1,GETDATE()) AND RowModCtr > 10

ORDER BY [RowModCtr] DESC

Once you identified the outdated stats, you can use the "Update Statistics" to do the update.