Category: MS SQL

Index Information

USE: To display index information.

SET NOCOUNT ON

SELECT DB_NAME(IPS.database_id) AS [database_name]
     , OBJECT_NAME(IPS.object_id, IPS.database_id) AS [object_name]
     , QUOTENAME(I.name) [index_name]
     , CASE WHEN avg_fragmentation_in_percent < 10 THEN 'LOW'
            WHEN avg_fragmentation_in_percent < 30 THEN 'MEDIUM'
            WHEN avg_fragmentation_in_percent < 50 THEN 'HIGH'
            ELSE 'EXTREME' END [fragmentation_indicator]
     , IPS.index_id
     , IPS.index_type_desc
     , IPS.avg_fragmentation_in_percent
     , IPS.fragment_count
     , IPS.avg_fragment_size_in_pages
     , IPS.page_count
  FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL , 'LIMITED') AS IPS
 INNER JOIN sys.indexes I  ON IPS.object_id = I.object_id 
   AND IPS.index_id = I.index_id
 ORDER BY [object_name], [index_name]
GO

 

Table Constraints

USE: To display all table constraints from a database.

SET NOCOUNT ON

SELECT A.name [TableName]
     , B.name [ColumnName]
     , C.name [ConstraintName]
     , C.[type] [ConstraintType]
     , A.crdate
  FROM sysobjects A
 INNER JOIN sys.columns B ON A.id = B.object_id
 INNER JOIN sys.key_constraints C ON A.id = C.parent_object_id
 WHERE A.Xtype = 'U'
   AND B.is_identity = 1
 ORDER BY 1
GO

 

Database Information

USE: To display database detail information.

SELECT @@SERVERNAME [ServerName],
       MF.data_space_id,
       MF.database_id,
       MF.[type],
       MF.[type_desc],
       MF.[name] [DBName],
       MF.[physical_name] [FilePath],
       MF.[state_desc],
       CAST((MF.[size] * 8.0) / 1024.0 AS numeric(19,2)) [FileSize (MB)],
       MF.[max_size],
       MF.[growth],
       DB.[create_date],
       DB.[compatibility_level],
       DB.[collation_name],
       DB.[user_access_desc],
       DB.[state_desc],
       DB.[recovery_model]
  FROM sys.master_files MF
 INNER JOIN sys.databases DB ON MF.database_id = DB.database_id
  LEFT JOIN sys.data_spaces DS ON MF.data_space_id = DS.data_space_id
  LEFT JOIN sys.database_files DF ON DS.name = DF.name
GO

 

Database Size

USE: To display database file size information at the server level.

SELECT @@SERVERNAME [ServerName],
       MF.database_id,
       DB.[name] [DBName],
       SUM(CAST((MF.[size] * 8.0) / 1024.0 AS numeric(19,2))) [Total Space Usage (MB)]
  FROM sys.master_files MF
 INNER JOIN sys.databases DB ON MF.database_id = DB.database_id
 GROUP BY MF.database_id, DB.[name]
 ORDER BY MF.database_id
 GO

 

Capture sp_who2

USE: To capture the result from executing sp_who2 system stored procedure. 

SET NOCOUNT ON

IF OBJECT_ID('tempdb..#SP_WHO2') IS NOT NULL
   DROP TABLE #SP_WHO2
GO

CREATE TABLE #SP_WHO2 (
       SPID varchar(128)
     , [Status] char(12)
     , [Login] varchar(128)
     , [HostName] varchar(128)
     , [BlkBy] varchar(128)
     , [DBName] varchar(128)
     , [Command] varchar(128)
     , [CPUTime] varchar(128)
     , [DiskIO] varchar(128)
     , LastBatch varchar(128)
     , ProgramName varchar(128)
     , SPID2 varchar(128)
     , REQUESTED varchar(128))

INSERT #SP_WHO2
EXEC SP_WHO2
GO

 

Database File Growth

USE: To find out recent database files growth.

IF(SELECT CONVERT(int,value_in_use) FROM sys.configurations WHERE [name] = 'default trace enabled' ) = 1 
BEGIN
  declare @curr_tracefilename varchar(500) ; 
  declare @base_tracefilename varchar(500) ; 
  declare @indx int ;

  SELECT @curr_tracefilename = [path] 
    FROM sys.traces where is_default = 1 ;
    
    SET @curr_tracefilename = REVERSE(@curr_tracefilename);
    
    SELECT @indx  = PATINDEX('%%', @curr_tracefilename) ;

    SET @curr_tracefilename = REVERSE(@curr_tracefilename) ;
    SET @base_tracefilename = LEFT( @curr_tracefilename,LEN(@curr_tracefilename) - @indx) + 'log.trc' ;  

  SELECT (DENSE_RANK() OVER(ORDER BY StartTime DESC))%2 AS [l1],
         CONVERT(int, EventClass) [EventClass],
         DatabaseName,
         [Filename],
         (Duration/1000) [Duration],
         StartTime,
         EndTime,
         (IntegerData*8.0/1024) [ChangeInSize]
    FROM ::fn_trace_gettable( @base_tracefilename, default ) 
   WHERE EventClass >= 92 AND
         EventClass <= 95 AND
         ServerName = @@SERVERNAME AND
         DatabaseName = DB_NAME()  
   ORDER BY StartTime DESC;   
END
GO

 

Default Trace

DECLARE @TracePath nvarchar(256)

SELECT @TracePath =  [path]
  FROM master.sys.traces

SELECT *
  FROM ::fn_trace_gettable (@TracePath,default)

SELECT T.EventID
     , T.ColumnID
     , E.Name [EventDescription]
     , C.Name [ColumnDescription]
  FROM ::fn_trace_geteventinfo(1) T
 INNER JOIN sys.trace_events E ON T.EventID = E.trace_event_id
 INNER JOIN sys.trace_columns C ON T.columnid = C.trace_column_id

SELECT T.EventID
     , E.Name [EventDescription]
     , COUNT(*) [DataColumnCount]
  FROM ::fn_trace_geteventinfo(1) T
 INNER JOIN sys.trace_events E ON T.EventID = E.trace_event_id
 GROUP BY T.EventID, E.Name