T-SQL to get the SQL Server Service Start time and Up time of SQL Server service

There are number of occasions where we need to get to know the SQL Server service start date time and also from what time the SQL Services are up and running generally termed as Uptime. There are many ways to do it like check for temp DB Creation time, using DMF sys.dm_io_virtual_file_stats etc. Below written is small T-SQL script but very useful which provides you this information. Hope this is useful. Comments and suggestions are always welcome.

USE MASTER
GO
SET NOCOUNT ON
GO
SELECT 'SQL server started at ' + 
CAST((CONVERT(DATETIME, sqlserver_start_time, 126)) AS VARCHAR(20))
+' and is up and running from '+
CAST((DATEDIFF(MINUTE,sqlserver_start_time,GETDATE()))/60 AS VARCHAR(5)) 
+ ' hours and ' +
RIGHT('0' + CAST(((DATEDIFF(MINUTE,sqlserver_start_time,GETDATE()))%60) AS VARCHAR(2)),2) 
+ ' minutes' AS [Start_Time_Up_Time] FROM sys.dm_os_sys_info
GO
SET NOCOUNT OFF
GO 

T-SQL to get various details on currently running Active processes on SQL Server Instance

Couple of day back i was working on something very important which will run some stored procedures to accomplish the task. Now there can be many transactions or different piece of codes in a Stored Procedure. Now just think that you come across a weird situation where you are not getting your results on time or may be its taking more time than expected. Now you can determine which is session and spid your procedure is running, but what if you want to know which piece of code is running which might me causing the issue, since how long it is running etc these kind of various questions comes to mind and we are stuck. Now thanks to DMV’s and DMF’s which makes our task easier by giving various piece of information which will be very useful for us. So i came with a small piece of TSQL which will answer these kind of questions and gives us the vital information.

This also provides information on estimated completion time, completed percentage for various operations like Backup,Database Integrity Check, Index Re-Organise etc.

USE MASTER
GO
SELECT SPID,ER.percent_complete,
/* This piece of code has been taken from article. Nice code to get time criteria's
http://beyondrelational.com/blogs/geniiius/archive/2011/11/01/backup-restore-checkdb-shrinkfile-progress.aspx
*/
      CAST(((DATEDIFF(s,start_time,GetDate()))/3600) as varchar) + ' hour(s), '
        + CAST((DATEDIFF(s,start_time,GetDate())%3600)/60 as varchar) + 'min, '
        + CAST((DATEDIFF(s,start_time,GetDate())%60) as varchar) + ' sec' as running_time,
    CAST((estimated_completion_time/3600000) as varchar) + ' hour(s), '
        + CAST((estimated_completion_time %3600000)/60000 as varchar) + 'min, '
        + CAST((estimated_completion_time %60000)/1000 as varchar) + ' sec' as est_time_to_go,
    DATEADD(second,estimated_completion_time/1000, getdate()) as est_completion_time,
/* End of Article Code */   
ER.command,ER.blocking_session_id, SP.DBID,LASTWAITTYPE,
DB_NAME(SP.DBID) AS DBNAME,
SUBSTRING(est.text, (ER.statement_start_offset/2)+1,
        ((CASE ER.statement_end_offset
         WHEN -1 THEN DATALENGTH(est.text)
         ELSE ER.statement_end_offset
         END - ER.statement_start_offset)/2) + 1) AS QueryText,
TEXT,CPU,HOSTNAME,LOGIN_TIME,LOGINAME,
SP.status,PROGRAM_NAME,NT_DOMAIN, NT_USERNAME
FROM SYSPROCESSES SP
INNER JOIN sys.dm_exec_requests ER
ON sp.spid = ER.session_id
CROSS APPLY SYS.DM_EXEC_SQL_TEXT(er.sql_handle) EST
ORDER BY CPU DESC

Thanks & Regards,

Manjunath C Bhat

TSQL to get All Primary Key Columns and its relevant details

I was working on database design stuff and came across a situation where in i had to get all the primary keys existing in database for all tables and the primary key columns and column details. It would be very had and insane to go into each table and search for PK and its data. So i came up with this small script which gives you all information on Primary Keys. This can be modified as per your needs to get more information or for foreign keys etc. Hope this is useful for some guys looking for it. It was very helpful for me though 🙂

SELECT SS.NAME AS [TABLE_SCHEMA], ST.NAME AS [TABLE_NAME]
     , SKC.NAME AS [CONSTRAINT_NAME], SC.NAME AS [CONSTRAINT_COLUMN_NAME],
     CAST(STY.NAME AS VARCHAR(20)) +'('+
     CAST(CASE ST.NAME
     WHEN 'NVARCHAR' THEN (SELECT SC.MAX_LENGTH/2)
     ELSE (SELECT SC.MAX_LENGTH)
     END AS VARCHAR(20)) +')' AS [DATA_TYPE]
  FROM SYS.KEY_CONSTRAINTS AS SKC
  INNER JOIN SYS.TABLES AS ST
    ON ST.OBJECT_ID = SKC.PARENT_OBJECT_ID
  INNER JOIN SYS.SCHEMAS AS SS
    ON SS.SCHEMA_ID = ST.SCHEMA_ID
  INNER JOIN SYS.INDEX_COLUMNS AS SIC
    ON SIC.OBJECT_ID = ST.OBJECT_ID
   AND SIC.INDEX_ID = SKC.UNIQUE_INDEX_ID
  INNER JOIN SYS.COLUMNS AS SC
    ON SC.OBJECT_ID = ST.OBJECT_ID
   AND SC.COLUMN_ID = SIC.COLUMN_ID
  INNER JOIN SYS.TYPES AS STY
      ON SC.USER_TYPE_ID = STY.USER_TYPE_ID
  ORDER BY TABLE_SCHEMA, TABLE_NAME, CONSTRAINT_NAME;

Happy Coding.

Thanks and Regards,

Manjunath C Bhat