FragmentationOption 枚举 FrequencyPair 类 FullTextCatalog 类 FullTextCatalogCollection 类 FullTextCatalogUpgradeOption 枚举 FullTextIndex 类 FullTextIndexColumn 类 FullTextIndexColumnCollection 类 FullTextService 类 FullTextStopList 类 FullTextStopListCollection 类 HttpAuthenticationModes 枚举 HttpPortTypes 枚举...
SELECT top 20 * FROM #TempFragmentation ORDER BY [Fragmentation %] DESC; DROP TABLE #TempFragmentation; 自上次SQL Server重启后,找出完全没有使用的索引: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 -- Do not lock anything, and do not get held up by any locks...
上图可以清晰地看到,SQL query经过SQL parser变成一个AST。然后经过planner,形成logical plan tree。之后optimizer 将它转为一个更优的physical plan。这里面包括许多优化规则,比如为join的算子去选择应该用哪一个物理算子去执行,aggregation是否要做two-phase的优化等等。optimizer之后会在schedule之前做一个fragmentation,把...
EnumFragmentation 方法 EnumObjectPermissions 方法 GetBoolParameter 方法 GetParameter 方法 GetStringParameter 方法 GetTextBody 方法 GetTextForScript 方法 GetTextProperty 方法 GetUrnRecursive 方法 Grant 方法 Initialize 方法 Refresh 方法 Rename 方法 Revoke 方法 Script 方法 ScriptHeader 方法...
SQL 複製 SELECT OBJECT_SCHEMA_NAME(i.object_id) AS schema_name, OBJECT_NAME(i.object_id) AS object_name, i.name AS index_name, i.type_desc AS index_type, 100.0 * (ISNULL(SUM(rgs.deleted_rows), 0)) / NULLIF(SUM(rgs.total_rows), 0) AS avg_fragmentation_...
EnumFragmentation 메서드 EnumObjectPermissions 메서드 Grant 메서드 Grant 메서드 Grant 메서드 (ObjectPermissionSet, String) Grant 메서드 (ObjectPermissionSet, String[]) Grant 메서드 (ObjectPermissionSet, String, Boolean) Grant 메서드 (ObjectPermissionSet,...
Provides an enumerable of properties that are explicitly disabled for specific server types or editions. This is not a list of all properties that don't work for the specified target. (Inherited fromSqlSmoObject) GetFragOptionString(FragmentationOption)(Inherited fromSqlSmoObject) ...
A Before/After comparison betweenFragmentationandPagesstatistics view is available only from the expanded view of an activity (click the plus sign icon to the left of an activity) after you select an individual index. When SQL Defrag Manager finishes performing an analysis or defragmentation activity...
What might not be so obvious is that after such indexes have fragmented a while, they're created their own "free space" though mid-index page splits (the "bad" kind). Then you come along and rebuild the index. I'd bet that the index has a "0" Fill Factor. If it does, the reb...
Robust message fragmentation & reassembly. Encryption. Game-Networking-Resources - Game networking is a subset of computer networking that commonly covers transport protocols, data replication, entity synchronization, lag compensation, client-side prediction, server reconciliation, interest management, bandwidth...