sql 重组和重建索引

Posted 2021-05-13

SELECT dbschemas.[name] as 'Schema',
dbtables.[name] as 'Table',
dbindexes.[name] as 'Index',
indexstats.avg_fragmentation_in_percent,
indexstats.page_count, 
case 
	when indexstats.avg_fragmentation_in_percent > 5 and indexstats.avg_fragmentation_in_percent < 30 then 'ALTER INDEX ' + dbindexes.[name] + ' ON ' + dbschemas.[name] + '.' + dbtables.[name] + ' REORGANIZE'
	when indexstats.avg_fragmentation_in_percent > 30 then 'ALTER INDEX ' + dbindexes.[name] + ' ON ' + dbschemas.[name] + '.' + dbtables.[name] + ' REBUILD'
	else 'Não há ação necessária.'
end as 'ActionNeeded'
FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS indexstats
INNER JOIN sys.tables dbtables on dbtables.[object_id] = indexstats.[object_id]
INNER JOIN sys.schemas dbschemas on dbtables.[schema_id] = dbschemas.[schema_id]
INNER JOIN sys.indexes AS dbindexes ON dbindexes.[object_id] = indexstats.[object_id]
AND indexstats.index_id = dbindexes.index_id
WHERE indexstats.database_id = DB_ID() and indexstats.avg_fragmentation_in_percent > 0
ORDER BY indexstats.avg_fragmentation_in_percent desc