Some TSQL queries used by SQL DBA in day to day activities

Table of Contents

Database log file full. How to find log file used and free space?

--Run below script to any database, you will get result for all the database
DBCC SQLPERF(LOGSPACE)

1 2	--Run below script to any database, you will get result for all the database DBCC SQLPERF(LOGSPACE)

Low disk space. How to find free space on the disk?

--Run the below script to get the free space on the disks.
exec xp_fixeddrives

1 2	--Run the below script to get the free space on the disks. exec xp_fixeddrives

To get the SQL Server version installed in your server?

SELECT @@VERSION AS SQLVersion

1	SELECT @@VERSION AS SQLVersion

How to get when your SQL Server was last restarted?

SELECT sqlserver_start_time from sys.dm_os_sys_info

1	SELECT sqlserver_start_time from sys.dm_os_sys_info

How to check User database size in SQL Server?

SELECT DB_NAME(database_id) AS DatabaseName,
SUM((size*8)/1024.0/1024.0) SizeGB
FROM sys.master_files
WHERE DB_NAME(database_id) in (select name from sys.databases where name not in ('tempdb','master','msdb','model'))
group by DB_NAME(database_id)

SELECT DB_NAME(database_id) AS DatabaseName,

SUM((size*8)/1024.0/1024.0) SizeGB

FROM sys.master_files

WHERE DB_NAME(database_id) in (select name from sys.databases where name not in ('tempdb','master','msdb','model'))

group by DB_NAME(database_id)

How to check free space and space used by database data files and log files in SQL Server?

USE [AdventureWorks2017]
GO

SELECT DB_NAME() AS DbName,
name AS FileName,
size/128.0 AS CurrentSizeMB,
size/128.0 - CAST(FILEPROPERTY(name, 'SpaceUsed') AS INT)/128.0 AS FreeSpaceMB
FROM sys.database_files;
GO

USE [AdventureWorks2017]

SELECT DB_NAME() AS DbName,

name AS FileName,

size/128.0 AS CurrentSizeMB,

size/128.0 - CAST(FILEPROPERTY(name, 'SpaceUsed') AS INT)/128.0 AS FreeSpaceMB

FROM sys.database_files;

How to get session details in SQL Server?

select * from sys.dm_exec_sessions;

1	select * from sys.dm_exec_sessions;

exec sp_who2;

1	exec sp_who2;

How to get a blocking query in SQL Server?

SELECT * FROM sys.sysprocesses WHERE blocked &lt;&gt; 0;

1	SELECT * FROM sys.sysprocesses WHERE blocked <> 0;

exec sp_who2;

1	exec sp_who2;

How to get the list of databases which are offline in SQL Server?

SELECT name, database_id, create_date,*
FROM sys.databases where state_desc = 'offline';

1 2	SELECT name, database_id, create_date,* FROM sys.databases where state_desc = 'offline';

How to get database backup history details in SQL Server?

SELECT TOP 100
s.database_name,
m.physical_device_name,
CAST(CAST(s.compressed_backup_size /1048576 AS NUMERIC(14,2)) AS VARCHAR(14) ) + ' ' AS "bkSize in MB", /*s.backup_size --use this if not compressed*/
CAST(DATEDIFF(second, s.backup_start_date,
s.backup_finish_date) AS VARCHAR(4)) + ' ' + 'Seconds' TimeTaken,
s.backup_start_date,
CAST(s.first_lsn AS VARCHAR(50)) AS first_lsn,
CAST(s.last_lsn AS VARCHAR(50)) AS last_lsn,
CASE s.[type] WHEN 'D' THEN 'Full Backup'
WHEN 'I' THEN 'Differential Backup'
WHEN 'L' THEN 'Transaction Log Backup'
END AS BackupType,
s.server_name,
s.recovery_model
FROM msdb.dbo.backupset s
INNER JOIN msdb.dbo.backupmediafamily m ON s.media_set_id = m.media_set_id
WHERE s.database_name in (select name from sys.databases where name not in ('tempdb','master','msdb','model'))
and s.backup_start_date&gt;=DATEADD(day,-1,GETDATE())
ORDER BY s.database_name,backup_start_date DESC, backup_finish_date

SELECT TOP 100

s.database_name,

m.physical_device_name,

CAST(CAST(s.compressed_backup_size /1048576 AS NUMERIC(14,2)) AS VARCHAR(14) ) + ' ' AS "bkSize in MB", /*s.backup_size --use this if not compressed*/

CAST(DATEDIFF(second, s.backup_start_date,

s.backup_finish_date) AS VARCHAR(4)) + ' ' + 'Seconds' TimeTaken,

s.backup_start_date,

CAST(s.first_lsn AS VARCHAR(50)) AS first_lsn,

CAST(s.last_lsn AS VARCHAR(50)) AS last_lsn,

CASE s.[type] WHEN 'D' THEN 'Full Backup'

WHEN 'I' THEN 'Differential Backup'

WHEN 'L' THEN 'Transaction Log Backup'

END AS BackupType,

s.server_name,

s.recovery_model

FROM msdb.dbo.backupset s

INNER JOIN msdb.dbo.backupmediafamily m ON s.media_set_id = m.media_set_id

WHERE s.database_name in (select name from sys.databases where name not in ('tempdb','master','msdb','model'))

and s.backup_start_date>=DATEADD(day,-1,GETDATE())

ORDER BY s.database_name,backup_start_date DESC, backup_finish_date

SELECT
CONVERT(CHAR(100), SERVERPROPERTY('Servername')) AS Server,
d.name AS 'DatabaseName', d.database_id as ID, d.state_desc as Status,
MAX(CASE WHEN bu.TYPE = 'D' THEN bu.LastBackupDate END) AS 'Full DB Backup Status',
MAX(CASE WHEN bu.TYPE = 'I' THEN bu.LastBackupDate END) AS 'Differential DB Backup Status',
MAX(CASE WHEN bu.TYPE = 'L' THEN bu.LastBackupDate END) AS 'Transaction DB Backup Status',
CASE d.recovery_model WHEN 1 THEN 'Full' WHEN 2 THEN 'Bulk Logged' WHEN 3 THEN 'Simple' END RecoveryModel
FROM MASTER.sys.databases d

LEFT OUTER JOIN (SELECT database_name, TYPE, MAX(backup_start_date) AS LastBackupDate
FROM msdb.dbo.backupset
GROUP BY database_name, TYPE) AS bu ON d.name = bu.database_name
GROUP BY d.Name, d.recovery_model,d.database_id, d.state_desc

SELECT

CONVERT(CHAR(100), SERVERPROPERTY('Servername')) AS Server,

d.name AS 'DatabaseName', d.database_id as ID, d.state_desc as Status,

MAX(CASE WHEN bu.TYPE = 'D' THEN bu.LastBackupDate END) AS 'Full DB Backup Status',

MAX(CASE WHEN bu.TYPE = 'I' THEN bu.LastBackupDate END) AS 'Differential DB Backup Status',

MAX(CASE WHEN bu.TYPE = 'L' THEN bu.LastBackupDate END) AS 'Transaction DB Backup Status',

CASE d.recovery_model WHEN 1 THEN 'Full' WHEN 2 THEN 'Bulk Logged' WHEN 3 THEN 'Simple' END RecoveryModel

FROM MASTER.sys.databases d

LEFT OUTER JOIN (SELECT database_name, TYPE, MAX(backup_start_date) AS LastBackupDate

FROM msdb.dbo.backupset

GROUP BY database_name, TYPE) AS bu ON d.name = bu.database_name

GROUP BY d.Name, d.recovery_model,d.database_id, d.state_desc

How to get all indexes of a table in SQL Server?

exec sp_helpindex '[dbo].[ErrorLog]' -- Put table name here

1	exec sp_helpindex '[dbo].[ErrorLog]' -- Put table name here

How to get the last index statistics updated date in SQL Server?

SELECT name AS index_name,
STATS_DATE(OBJECT_ID, index_id) AS StatsUpdated
FROM sys.indexes
WHERE OBJECT_ID = OBJECT_ID('[Person].[EmailAddress]'); -- Put table name here

SELECT name AS index_name,

STATS_DATE(OBJECT_ID, index_id) AS StatsUpdated

FROM sys.indexes

WHERE OBJECT_ID = OBJECT_ID('[Person].[EmailAddress]'); -- Put table name here

How to get statistics of all objects of an entire database in SQL Server?

use [AdventureWorks2017] -- Put database name here
GO

select a.id as 'ObjectID', isnull(a.name,'Heap') as 'IndexName', b.name as 'TableName',
stats_date (id,indid) as stats_last_updated_time
from sys.sysindexes as a
inner join sys.objects as b
on a.id = b.object_id
where b.type = 'U'
GO

use [AdventureWorks2017] -- Put database name here

select a.id as 'ObjectID', isnull(a.name,'Heap') as 'IndexName', b.name as 'TableName',

stats_date (id,indid) as stats_last_updated_time

from sys.sysindexes as a

inner join sys.objects as b

on a.id = b.object_id

where b.type = 'U'

How to get table/index fragmentation in SQL Server?

SELECT OBJECT_NAME(DMV.object_id) AS TABLE_NAME ,
SI.NAME AS INDEX_NAME ,
avg_fragmentation_in_percent AS FRAGMENT_PERCENT ,
DMV.record_count
FROM sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, 'SAMPLED')
AS DMV
LEFT OUTER JOIN SYS.INDEXES AS SI ON DMV.OBJECT_ID = SI.OBJECT_ID
AND DMV.INDEX_ID = SI.INDEX_ID
--WHERE avg_fragmentation_in_percent > 10
AND index_type_desc IN ( 'CLUSTERED INDEX', 'NONCLUSTERED INDEX' )
AND DMV.record_count >= 2000
--ORDER BY TABLE_NAME DESC
ORDER BY FRAGMENT_PERCENT desc

SELECT OBJECT_NAME(DMV.object_id) AS TABLE_NAME ,

SI.NAME AS INDEX_NAME ,

avg_fragmentation_in_percent AS FRAGMENT_PERCENT ,

DMV.record_count

FROM sys.dm_db_index_physical_stats(DB_ID(), NULL, NULL, NULL, 'SAMPLED')

AS DMV

LEFT OUTER JOIN SYS.INDEXES AS SI ON DMV.OBJECT_ID = SI.OBJECT_ID

AND DMV.INDEX_ID = SI.INDEX_ID

--WHERE avg_fragmentation_in_percent > 10

AND index_type_desc IN ( 'CLUSTERED INDEX', 'NONCLUSTERED INDEX' )

AND DMV.record_count >= 2000

--ORDER BY TABLE_NAME DESC

ORDER BY FRAGMENT_PERCENT desc

How to get indexes with column on which index is created in SQL Server?

SELECT 
OBJECT_NAME(ind.object_id) AS ObjectName,ind.name AS IndexName,  ind.is_primary_key AS IsPrimaryKey, ind.is_unique AS IsUniqueIndex,col.name AS ColumnName, ic.is_included_column AS IsIncludedColumn
     
FROM    sys.indexes ind
        INNER JOIN sys.index_columns ic
            ON ind.object_id = ic.object_id
               AND ind.index_id = ic.index_id
        INNER JOIN sys.columns col
            ON ic.object_id = col.object_id
               AND ic.column_id = col.column_id
        INNER JOIN sys.tables t
            ON ind.object_id = t.object_id
 WHERE   t.is_ms_shipped = 0
 AND t.name in('ACCOUNT','ACCOUNT_VIEW')

 ORDER BY OBJECT_SCHEMA_NAME(ind.object_id) --SchemaName
      , OBJECT_NAME(ind.object_id) --ObjectName
      , ind.is_primary_key DESC
      , ind.is_unique DESC
      , ind.name --IndexName
      , ic.key_ordinal

SELECT

OBJECT_NAME(ind.object_id) AS ObjectName,ind.name AS IndexName, ind.is_primary_key AS IsPrimaryKey, ind.is_unique AS IsUniqueIndex,col.name AS ColumnName, ic.is_included_column AS IsIncludedColumn

FROM sys.indexes ind

INNER JOIN sys.index_columns ic

ON ind.object_id = ic.object_id

AND ind.index_id = ic.index_id

INNER JOIN sys.columns col

ON ic.object_id = col.object_id

AND ic.column_id = col.column_id

INNER JOIN sys.tables t

ON ind.object_id = t.object_id

WHERE t.is_ms_shipped = 0

AND t.name in('ACCOUNT','ACCOUNT_VIEW')

ORDER BY OBJECT_SCHEMA_NAME(ind.object_id) --SchemaName

, OBJECT_NAME(ind.object_id) --ObjectName

, ind.is_primary_key DESC

, ind.is_unique DESC

, ind.name --IndexName

, ic.key_ordinal

How to get % completion of a currently running job in SQL Server?

SELECT percent_complete ,r.estimated_completion_time/1000
"estimated_completion_time_in_second",* 
FROM sys.dm_exec_sessions s 
INNER JOIN sys.dm_exec_requests r 
ON s.session_id = r.session_id 
and s.login_name not like '%BeheraH'
and s.status='running'

SELECT percent_complete ,r.estimated_completion_time/1000

"estimated_completion_time_in_second",*

FROM sys.dm_exec_sessions s

INNER JOIN sys.dm_exec_requests r

ON s.session_id = r.session_id

and s.login_name not like '%BeheraH'

and s.status='running'

How to get jobs and respective owner details in SQL Server?

Use [AdventureWorks2017] -- Put database name here
Go

select s.name,l.name
from msdb..sysjobs s
left join master.sys.syslogins l on s.owner_sid = l.sid

Use [AdventureWorks2017] -- Put database name here

select s.name,l.name

from msdb..sysjobs s

left join master.sys.syslogins l on s.owner_sid = l.sid

To get job run history –run_duration column(HHMMSS format) in SQL Server?

Use [AdventureWorks2017] -- Put database name here Go

select
j.name as 'JobName',
run_date,
run_time,
msdb.dbo.agent_datetime(run_date, run_time) as 'RunDateTime',
run_duration
From msdb.dbo.sysjobs j
INNER JOIN msdb.dbo.sysjobhistory h
ON j.job_id = h.job_id
where j.enabled = 1 --Only Enabled Jobs
order by JobName, RunDateTime desc

Use [AdventureWorks2017] -- Put database name here Go

select

j.name as 'JobName',

run_date,

run_time,

msdb.dbo.agent_datetime(run_date, run_time) as 'RunDateTime',

run_duration

From msdb.dbo.sysjobs j

INNER JOIN msdb.dbo.sysjobhistory h

ON j.job_id = h.job_id

where j.enabled = 1 --Only Enabled Jobs

order by JobName, RunDateTime desc

How to know whether a job is running slow in SQL Server?

SELECT
job.Name, job.job_ID
,job.Originating_Server
,activity.run_requested_Date
,datediff(minute, activity.run_requested_Date, getdate()) AS Elapsed
FROM
msdb.dbo.sysjobs_view job
INNER JOIN msdb.dbo.sysjobactivity activity
ON (job.job_id = activity.job_id)
WHERE
run_Requested_date is not null
AND stop_execution_date is null
AND job.name like 'Adhoc_Maintenance.Subplan_1%'

SELECT

job.Name, job.job_ID

,job.Originating_Server

,activity.run_requested_Date

,datediff(minute, activity.run_requested_Date, getdate()) AS Elapsed

FROM

msdb.dbo.sysjobs_view job

INNER JOIN msdb.dbo.sysjobactivity activity

ON (job.job_id = activity.job_id)

WHERE

run_Requested_date is not null

AND stop_execution_date is null

AND job.name like 'Adhoc_Maintenance.Subplan_1%'

How to manage Tempdb issue in SQL Server?

-- Check Size:
select name,SUM(size)*1.0/128 AS [Size in MB] 
from tempdb.sys.database_files group by name;
exec sp_spaceused;

-- Check Size:

select name,SUM(size)*1.0/128 AS [Size in MB]

from tempdb.sys.database_files group by name;

exec sp_spaceused;

-- If tempdb is not releasing space, then execute below two commands.:

a) DBCC FREEPROCCACHE
b) dbcc shrinkfile (tempdev, 'target size in MB')

-- If tempdb is not releasing space, then execute below two commands.:

a) DBCC FREEPROCCACHE

b) dbcc shrinkfile (tempdev, 'target size in MB')

-- Temp DB Usage:

select reserved_MB= convert(numeric(10,2),
round((unallocated_extent_page_count+version_store_reserved_page_count+user_object_reserved_page_count +internal_object_reserved_page_count+mixed_extent_page_count)*8/1024.,2)),
unallocated_extent_MB =convert(numeric(10,2),
round(unallocated_extent_page_count*8/1024.,2)),user_object_reserved_page_count,user_object_reserved_MB =convert(numeric(10,2),
round(user_object_reserved_page_count*8/1024.,2))from sys.dm_db_file_space_usage

-- Temp DB Usage:

select reserved_MB= convert(numeric(10,2),

round((unallocated_extent_page_count+version_store_reserved_page_count+user_object_reserved_page_count +internal_object_reserved_page_count+mixed_extent_page_count)*8/1024.,2)),

unallocated_extent_MB =convert(numeric(10,2),

round(unallocated_extent_page_count*8/1024.,2)),user_object_reserved_page_count,user_object_reserved_MB =convert(numeric(10,2),

round(user_object_reserved_page_count*8/1024.,2))from sys.dm_db_file_space_usage

How to get unused indexes in SQL Server?

SELECT object_name(i.object_id) AS TableName, i.name AS [Unused Index]
 FROM sys.indexes i
 LEFT JOIN sys.dm_db_index_usage_stats s ON s.object_id = i.object_id
       AND i.index_id = s.index_id
       AND s.database_id = db_id()
 WHERE objectproperty(i.object_id, 'IsIndexable') = 1
 AND objectproperty(i.object_id, 'IsIndexed') = 1
 AND s.index_id is null
 OR (s.user_updates > 0 and s.user_seeks = 0 and s.user_scans = 0 and s.user_lookups = 0) ORDER BY object_name(i.object_id) ASC

SELECT object_name(i.object_id) AS TableName, i.name AS [Unused Index]

FROM sys.indexes i

LEFT JOIN sys.dm_db_index_usage_stats s ON s.object_id = i.object_id

AND i.index_id = s.index_id

AND s.database_id = db_id()

WHERE objectproperty(i.object_id, 'IsIndexable') = 1

AND objectproperty(i.object_id, 'IsIndexed') = 1

AND s.index_id is null

OR (s.user_updates > 0 and s.user_seeks = 0 and s.user_scans = 0 and s.user_lookups = 0) ORDER BY object_name(i.object_id) ASC

How find DB wise open connection?

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",
loginame as "LoginName"
FROM sys.sysprocesses
WHERE dbid >4
GROUP BY dbid, loginame

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",

loginame as "LoginName"

FROM sys.sysprocesses

WHERE dbid >4

GROUP BY dbid, loginame

How check the active connection in SQL Server?

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",
loginame as "LoginName"
FROM sys.sysprocesses
   WHERE dbid > 0
GROUP BY dbid, loginame

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",

loginame as "LoginName"

FROM sys.sysprocesses

WHERE dbid > 0

GROUP BY dbid, loginame

How to check connections for a particular DB in SQL Server?

select spid,loginame,DB_NAME(dbid) AS DB_NAME ,status
from sys.sysprocesses where DB_NAME(dbid)='DB_Name';

1 2	select spid,loginame,DB_NAME(dbid) AS DB_NAME ,status from sys.sysprocesses where DB_NAME(dbid)='DB_Name';

How to get maximum user connection settings in SQL Server?

select * from sys.configurations
where name ='user connections'

1 2	select * from sys.configurations where name ='user connections'

To know current actual connection settings in SQL Server?

select * from sys.dm_os_performance_counters
where counter_name ='User Connections';

1 2	select * from sys.dm_os_performance_counters where counter_name ='User Connections';

To get table name having particular data type in SQL Server?

SELECT OBJECT_NAME(c.object_id) as table_name
, c.name
, t.name
, c.precision
, c.scale
FROM sys.columns c
INNER JOIN sys.types t ON c.user_type_id = t.user_type_id
WHERE t.name IN ('numeric')
AND c.scale &lt;&gt; 0
ORDER BY 1, 2

SELECT OBJECT_NAME(c.object_id) as table_name

, c.name

, t.name

, c.precision

, c.scale

FROM sys.columns c

INNER JOIN sys.types t ON c.user_type_id = t.user_type_id

WHERE t.name IN ('numeric')

AND c.scale <> 0

ORDER BY 1, 2

How to get DB Users and their role privileges in SQL Server?

SELECT (select name from sys.databases where name='359STG') DBNAME,m.NAME USERNAME, p.NAME DBROLE
FROM sys.database_role_members rm
JOIN sys.database_principals p
ON rm.role_principal_id = p.principal_id
JOIN sys.database_principals m
ON rm.member_principal_id = m.principal_id

SELECT (select name from sys.databases where name='359STG') DBNAME,m.NAME USERNAME, p.NAME DBROLE

FROM sys.database_role_members rm

JOIN sys.database_principals p

ON rm.role_principal_id = p.principal_id

JOIN sys.database_principals m

ON rm.member_principal_id = m.principal_id

How to Rename a database in SQL Server?

USE master
GO
ALTER DATABASE
SET SINGLE_USER
WITH ROLLBACK IMMEDIATE
GO
EXEC master..sp_renamedb 'DBName','DBNewName'
GO
ALTER DATABASE DBNewName
SET MULTI_USER

USE master

ALTER DATABASE

SET SINGLE_USER

WITH ROLLBACK IMMEDIATE

EXEC master..sp_renamedb 'DBName','DBNewName'

ALTER DATABASE DBNewName

SET MULTI_USER

How to Rename logical data file/log file name in SQL Server?

USE [master];
GO
ALTER DATABASE [DB Name] MODIFY FILE ( NAME = oldname, NEWNAME = naewname );
ALTER DATABASE [DB Name] MODIFY FILE ( NAME = odname_Log, NEWNAME = newname_Log );
GO

USE [master];

ALTER DATABASE [DB Name] MODIFY FILE ( NAME = oldname, NEWNAME = naewname );

ALTER DATABASE [DB Name] MODIFY FILE ( NAME = odname_Log, NEWNAME = newname_Log );

How to get Query from currently running session in SQL Server?

DECLARE @sqltext VARBINARY(128)
SELECT @sqltext = sql_handle
FROM sys.sysprocesses
WHERE spid = (select session_id from sys.dm_exec_sessions where status='running' and login_name='LoginName')
SELECT TEXT
FROM sys.dm_exec_sql_text(@sqltext)

DECLARE @sqltext VARBINARY(128)

SELECT @sqltext = sql_handle

FROM sys.sysprocesses

WHERE spid = (select session_id from sys.dm_exec_sessions where status='running' and login_name='LoginName')

SELECT TEXT

FROM sys.dm_exec_sql_text(@sqltext)

How get SQL Text using session-id in SQL Server?

DBCC INPUTBUFFER (session id)

1	DBCC INPUTBUFFER (session id)

How to get expensive queries in the database in SQL Server?

SELECT TOP 20
       st.text,
       qp.query_plan,
       qs.*
FROM sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.plan_handle) st
CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp
Where st.dbid=9 and qs.last_execution_time>'2017-07-03 21:00:29.583'--and qs.last_execution_time< '2017-07-01 00:00:29.583'
ORDER BY total_elapsed_time DESC
GO

SELECT TOP 20

st.text,

qp.query_plan,

qs.*

FROM sys.dm_exec_query_stats qs

CROSS APPLY sys.dm_exec_sql_text(qs.plan_handle) st

CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp

Where st.dbid=9 and qs.last_execution_time>'2017-07-03 21:00:29.583'--and qs.last_execution_time< '2017-07-01 00:00:29.583'

ORDER BY total_elapsed_time DESC

How to get currently running query in SQL Server?

SELECT sqltext.text,
      req.session_id,
      req.status,
      req.command,
      req.cpu_time,
     req.total_elapsed_time
FROM   sys.dm_exec_requests req
CROSS apply sys.Dm_exec_sql_text(sql_handle) AS sqltext

SELECT sqltext.text,

req.session_id,

req.status,

req.command,

req.cpu_time,

req.total_elapsed_time

FROM sys.dm_exec_requests req

CROSS apply sys.Dm_exec_sql_text(sql_handle) AS sqltext

How to get long-running Query in SQL Server?

SELECT TOP 5 t.text
             AS
             'SQL Text',
             st.execution_count,
             Isnull(st.total_elapsed_time / st.execution_count, 0)
             AS 'AVG Excecution Time',
             st.total_worker_time / st.execution_count
             AS 'AVG Worker Time',
            st.total_worker_time,
             st.max_logical_reads,
             st.max_logical_writes,
             st.creation_time,
             Isnull(st.execution_count / Datediff(second, st.creation_time,
                                        Getdate()), 0) AS
             'Calls Per Second'
FROM   sys.dm_exec_query_stats st
       CROSS apply sys.Dm_exec_sql_text(st.sql_handle) t
ORDER  BY st.total_elapsed_time DESC

SELECT TOP 5 t.text

'SQL Text',

st.execution_count,

Isnull(st.total_elapsed_time / st.execution_count, 0)

AS 'AVG Excecution Time',

st.total_worker_time / st.execution_count

AS 'AVG Worker Time',

st.total_worker_time,

st.max_logical_reads,

st.max_logical_writes,

st.creation_time,

Isnull(st.execution_count / Datediff(second, st.creation_time,

Getdate()), 0) AS

'Calls Per Second'

FROM sys.dm_exec_query_stats st

CROSS apply sys.Dm_exec_sql_text(st.sql_handle) t

ORDER BY st.total_elapsed_time DESC

How to get SQL Text of recently executed queries in SQL Server?

DECLARE @StartDate datetime, @EndDate datetime
SELECT @StartDate='2017-02-08 20:02:29.007', @EndDate='2017-02-08 23:42:29.007'
SELECT
    deqs.last_execution_time AS [Time],
   SUBSTRING( dest.TEXT,1,200) AS [Query]
 FROM
    sys.dm_exec_query_stats AS deqs
    CROSS APPLY sys.dm_exec_sql_text(deqs.sql_handle) AS dest
   
    where deqs.last_execution_time >=@StartDate AND   deqs.last_execution_time<=@EndDate
ORDER BY
    deqs.last_execution_time DESC

DECLARE @StartDate datetime, @EndDate datetime

SELECT @StartDate='2017-02-08 20:02:29.007', @EndDate='2017-02-08 23:42:29.007'

SELECT

deqs.last_execution_time AS [Time],

SUBSTRING( dest.TEXT,1,200) AS [Query]

FROM

sys.dm_exec_query_stats AS deqs

CROSS APPLY sys.dm_exec_sql_text(deqs.sql_handle) AS dest

where deqs.last_execution_time >=@StartDate AND deqs.last_execution_time<=@EndDate

ORDER BY

deqs.last_execution_time DESC

How to Move Data files or log files to the different physical locations in SQL Server?

--Step: 1
ALTER DATABASE MODIFY FILE ( NAME = , FILENAME = 'E:\MSSQL.1\MSSQL\Data\datafile1.mdf');
ALTER DATABASE MODIFY FILE ( NAME = , FILENAME = 'F:\MSSQL.1\MSSQL\Log\Logfile.ldf');

--Step 2:
ALTER DATABASE SET OFFLINE WITH ROLLBACK IMMEDIATE;

--Step 3:
Copy data file/log file to new location.

--Step 4:
ALTER DATABASE SET ONLINE;

--Step: 1

ALTER DATABASE MODIFY FILE ( NAME = , FILENAME = 'E:\MSSQL.1\MSSQL\Data\datafile1.mdf');

ALTER DATABASE MODIFY FILE ( NAME = , FILENAME = 'F:\MSSQL.1\MSSQL\Log\Logfile.ldf');

--Step 2:

ALTER DATABASE SET OFFLINE WITH ROLLBACK IMMEDIATE;

--Step 3:

Copy data file/log file to new location.

--Step 4:

ALTER DATABASE SET ONLINE;

How to get from which backup database was restored in SQL Server?

SELECT [rs].[destination_database_name] ,
[rs].[restore_date] ,
[bs].[backup_start_date] ,
[bs].[backup_finish_date] ,
[bs].[database_name] AS [source_database_name] ,
[bmf].[physical_device_name] AS [backup_file_used_for_restore]
FROM msdb..restorehistory rs
INNER JOIN msdb..backupset bs ON [rs].[backup_set_id] = [bs].[backup_set_id]
INNER JOIN msdb..backupmediafamily bmf ON [bs].[media_set_id] = [bmf].[media_set_id]
ORDER BY [rs].[restore_date] DESC

SELECT [rs].[destination_database_name] ,

[rs].[restore_date] ,

[bs].[backup_start_date] ,

[bs].[backup_finish_date] ,

[bs].[database_name] AS [source_database_name] ,

[bmf].[physical_device_name] AS [backup_file_used_for_restore]

FROM msdb..restorehistory rs

INNER JOIN msdb..backupset bs ON [rs].[backup_set_id] = [bs].[backup_set_id]

INNER JOIN msdb..backupmediafamily bmf ON [bs].[media_set_id] = [bmf].[media_set_id]

ORDER BY [rs].[restore_date] DESC

How to know memory usage in SQL Server?

select * from sys.dm_os_process_memory;

1	select * from sys.dm_os_process_memory;

select
total_physical_memory_kb/1024 AS total_physical_memory_mb,
available_physical_memory_kb/1024 AS available_physical_memory_mb,
total_page_file_kb/1024 AS total_page_file_mb,
available_page_file_kb/1024 AS available_page_file_mb,
100 - (100 * CAST(available_physical_memory_kb AS DECIMAL(18,3))/CAST(total_physical_memory_kb AS DECIMAL(18,3)))
AS 'Percentage_Used',
system_memory_state_desc
from sys.dm_os_sys_memory;

select

total_physical_memory_kb/1024 AS total_physical_memory_mb,

available_physical_memory_kb/1024 AS available_physical_memory_mb,

total_page_file_kb/1024 AS total_page_file_mb,

available_page_file_kb/1024 AS available_page_file_mb,

100 - (100 * CAST(available_physical_memory_kb AS DECIMAL(18,3))/CAST(total_physical_memory_kb AS DECIMAL(18,3)))

AS 'Percentage_Used',

system_memory_state_desc

from sys.dm_os_sys_memory;

How to get some insight of Locking and blocking sessions in SQL Server?

Select * from sys.dm_tran_locks;
Select * from sys.dm_os_wait_stats;

1 2	Select * from sys.dm_tran_locks; Select * from sys.dm_os_wait_stats;

How to reset of login in SQL Server?

ALTER LOGIN <login Name> WITH PASSWORD = '<PasswordHere>';

1	ALTER LOGIN <login Name> WITH PASSWORD = '<PasswordHere>';

How to get statistics collection date in SQL Server?

SELECT name AS index_name,
STATS_DATE(OBJECT_ID, index_id) AS StatsUpdated
FROM sys.indexes
WHERE OBJECT_ID = OBJECT_ID('dbo.account')
GO

SELECT name AS index_name,

STATS_DATE(OBJECT_ID, index_id) AS StatsUpdated

FROM sys.indexes

WHERE OBJECT_ID = OBJECT_ID('dbo.account')

How to find dependent objects based on columns name in SQL Server?

SELECT OBJECT_NAME(OBJECT_ID),definition
FROM sys.sql_modules
WHERE definition LIKE '%' + 'AC__CUST_ADDR' + '%' order by 1;

SELECT OBJECT_NAME(OBJECT_ID),definition

FROM sys.sql_modules

WHERE definition LIKE '%' + 'AC__CUST_ADDR' + '%' order by 1;

How to Add data file or log file in SQL Server?

ALTER DATABASE [DB NAME]
ADD FILE
(
NAME = [Data4],
FILENAME = 'K:\MSSQL\Data\Data4.mdf',
SIZE = 3072 KB,
MAXSIZE = UNLIMITED,
FILEGROWTH = 1024 KB
) TO FILEGROUP [PRIMARY]

ALTER DATABASE [DB NAME]
ADD LOG FILE
(
NAME = DellTest_Log,
FILENAME = 'K:\MSSQL\Log\DB_Log.ldf',
SIZE = 5MB,
MAXSIZE = UNLIMITED,
FILEGROWTH = 5MB
);
Go

ALTER DATABASE [DB NAME]

ADD FILE

(

NAME = [Data4],

FILENAME = 'K:\MSSQL\Data\Data4.mdf',

SIZE = 3072 KB,

MAXSIZE = UNLIMITED,

FILEGROWTH = 1024 KB

) TO FILEGROUP [PRIMARY]

ALTER DATABASE [DB NAME]

ADD LOG FILE

(

NAME = DellTest_Log,

FILENAME = 'K:\MSSQL\Log\DB_Log.ldf',

SIZE = 5MB,

MAXSIZE = UNLIMITED,

FILEGROWTH = 5MB

);

How to identify an object using some code SQL txt in SQL Server?

select * from syscomments where text like '% select * into SQLlist%'

1	select * from syscomments where text like '% select * into SQLlist%'

Searching database name by data files in SQL Server?

select DB_NAME(database_id) AS "DB_NAME",name AS "Logical_Name", physical_name 
from sys.master_files where DB_NAME(database_id)not in
('master','model','msdb','tempdb')
and physical_name like '%E:\%'

select DB_NAME(database_id) AS "DB_NAME",name AS "Logical_Name", physical_name

from sys.master_files where DB_NAME(database_id)not in

('master','model','msdb','tempdb')

and physical_name like '%E:\%'

How to check DB features enabled in your SQL server instance?

sp_CONFIGURE 'show advanced', 0
GO
RECONFIGURE
GO
sp_CONFIGURE
GO
sp_CONFIGURE 'show advanced', 1
GO
RECONFIGURE
GO
sp_CONFIGURE
GO

sp_CONFIGURE 'show advanced', 0

RECONFIGURE

sp_CONFIGURE

sp_CONFIGURE 'show advanced', 1

RECONFIGURE

sp_CONFIGURE

How to take the database offline immediately in SQL Server?

ALTER DATABASE [DB Name] SET OFFLINE WITH ROLLBACK IMMEDIATE;

1	ALTER DATABASE [DB Name] SET OFFLINE WITH ROLLBACK IMMEDIATE;

Schema authorization change in SQL Server?

SELECT * FROM sys.schemas WHERE principal_id = USER_ID('id)
ALTER AUTHORIZATION ON SCHEMA::db_datareader TO db_datareader;

1 2	SELECT * FROM sys.schemas WHERE principal_id = USER_ID('id) ALTER AUTHORIZATION ON SCHEMA::db_datareader TO db_datareader;

How to get DB isolation level in SQL Server?

EXEC ('DBCC USEROPTIONS WITH NO_INFOMSGS')

1	EXEC ('DBCC USEROPTIONS WITH NO_INFOMSGS')

How to Change the transaction level in SQL Server?

ALTER DATABASE OurTechIdeasDB -- DB Namne
SET READ_COMMITTED_SNAPSHOT ON

1 2	ALTER DATABASE OurTechIdeasDB -- DB Namne SET READ_COMMITTED_SNAPSHOT ON

How to see the Isolation level enabled or not using T-SQL?

select is_read_committed_snapshot_on, name from master.sys.databases
where name not in ('master','model','tempdb','msdb')
and is_read_committed_snapshot_on &lt;&gt;1

select is_read_committed_snapshot_on, name from master.sys.databases

where name not in ('master','model','tempdb','msdb')

and is_read_committed_snapshot_on <>1

How to generate a script for killing multiple sessions in SQL Server?

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",
loginame as "LoginName",'kill '+convert(varchar,spid)+';'
FROM sys.sysprocesses
WHERE dbid > 0
and DB_NAME(dbid)='<DB Name>'
GROUP BY dbid, loginame,spid

SELECT DB_NAME(dbid) as "Database", COUNT(dbid) as "Number Of Open Connections",

loginame as "LoginName",'kill '+convert(varchar,spid)+';'

FROM sys.sysprocesses

WHERE dbid > 0

and DB_NAME(dbid)='<DB Name>'

GROUP BY dbid, loginame,spid

How to check SQL Server restart time in SQL Server?

select * from sys.dm_os_sys_info

1	select * from sys.dm_os_sys_info

How to generate a script to take multiple databases offline in SQL Server?

select 'alter database ' +name+ ' set offline with rollback immediate;' 
from sys.databases where name not in ('master','msdb','tempdb','model');

1 2	select 'alter database ' +name+ ' set offline with rollback immediate;' from sys.databases where name not in ('master','msdb','tempdb','model');

alter database AdventureWorks2008 set offline with rollback immediate;
alter database AdventureWorks2008R2 set offline with rollback immediate;
alter database AdventureWorks2012 set offline with rollback immediate;
alter database AdventureWorks2014 set offline with rollback immediate;
alter database AdventureWorks2016 set offline with rollback immediate;
alter database AdventureWorks2017 set offline with rollback immediate;
alter database OurTechIdeasDB set offline with rollback immediate;

alter database AdventureWorks2008 set offline with rollback immediate;

alter database AdventureWorks2008R2 set offline with rollback immediate;

alter database AdventureWorks2012 set offline with rollback immediate;

alter database AdventureWorks2014 set offline with rollback immediate;

alter database AdventureWorks2016 set offline with rollback immediate;

alter database AdventureWorks2017 set offline with rollback immediate;

alter database OurTechIdeasDB set offline with rollback immediate;

Ref. himanshusqldbaposts.blogspot.com

Comments

Ramprosad Mondal says:

May 23, 2020 at 6:22 AM

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- Sanjay Humania says:
  
  October 5, 2020 at 7:08 AM
  
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- Sanjay Humania says:
  
  October 5, 2020 at 7:08 AM
  
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- Sanjay Humania says:
  
  October 5, 2020 at 7:08 AM
  
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- Sanjay Humania says:
  
  October 5, 2020 at 7:05 AM
  
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How to Change the transaction level in SQL Server?

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How to check SQL Server restart time in SQL Server?

How to generate a script to take multiple databases offline in SQL Server?

About SQL Server Versions

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