petesql

-- logging sp_who2 results to table
CREATE TABLE #sp_who2 (
    SPID INT,
    Status VARCHAR(MAX),
    Login VARCHAR(MAX),
    HostName VARCHAR(MAX),
    BlkBy VARCHAR(MAX),
    DBName VARCHAR(MAX),
    Command VARCHAR(MAX),
    CPUTime INT,

petesql

-- Show all SQL Agent Jobs (without steps)
SELECT * FROM msdb.dbo.sysjobs;

petesql

-- List all SQL Agent jobs with schedule details  
SELECT  
    j.job_id,  
    j.name,  
    j.description,  
    j.enabled,  
    j.date_created,  
    j.date_modified,  
    s.step_id,  
    s.step_name,  

petesql

-- show exclusive locks on tables for a database
DECLARE @DatabaseName NVARCHAR(128) = 'database01'
DECLARE @DatabaseID INT = DB_ID(@DatabaseName)
DECLARE @SQL NVARCHAR(MAX)

SET @SQL = N'
USE ' + QUOTENAME(@DatabaseName) + ';
SELECT 
    ses.login_name AS UserName,
    ses.session_id AS SessionID,

petesql

-- Create temp table for storing database size information  
DECLARE @command NVARCHAR(MAX);  
DROP TABLE IF EXISTS #MSSQL_Database_Sizes;  

CREATE TABLE #MSSQL_Database_Sizes (  
  [database_name] NVARCHAR(MAX) NULL,  
  current_size_mb INT NULL,  
  freespace_mb INT NULL,  
  collection_date DATE NULL  
);  

petesql

-- Show last backups on all databases
SELECT 
  ISNULL(d.[name], bs.[database_name]) AS [Database], d.recovery_model_desc AS [Recovery Model], 
    MAX(CASE WHEN [type] = 'D' THEN bs.backup_finish_date ELSE NULL END) AS [Last Full Backup],
    MAX(CASE WHEN [type] = 'I' THEN bs.backup_finish_date ELSE NULL END) AS [Last Differential Backup],
    MAX(CASE WHEN [type] = 'L' THEN bs.backup_finish_date ELSE NULL END) AS [Last Log Backup]
FROM 
  sys.databases AS d WITH (NOLOCK)
  LEFT OUTER JOIN msdb.dbo.backupset AS bs WITH (NOLOCK)
  ON bs.[database_name] = d.[name] 

petesql

-- Prepare SQL for TempDB Database File Move 
SELECT 'ALTER DATABASE tempdb MODIFY FILE (NAME = [' + f.name + '],'
	+ ' FILENAME = ''Z:\MSSQL\DATA\' + f.name
	+ CASE WHEN f.type = 1 THEN '.ldf' ELSE '.mdf' END
	+ ''');'
FROM sys.master_files f
WHERE f.database_id = DB_ID(N'tempdb');

petesql

-- This query retrieves and suggests unused index information from the DMV (Dynamic Management Views) in SQL Server.
-- It identifies unused or rarely used non-clustered indexes and generates DROP INDEX statements for them.

SELECT TOP 25
    o.name AS ObjectName,
    i.name AS IndexName,
    i.index_id AS IndexID,
    dm_ius.user_seeks AS UserSeek,
    dm_ius.user_scans AS UserScans,
    dm_ius.user_lookups AS UserLookups,

petesql

-- This query retrieves and suggests missing index information from the DMV (Dynamic Management Views) in SQL Server.
-- It calculates an improvement measure for each missing index and generates a CREATE INDEX statement to address the missing index.

SELECT
    CONVERT(varchar(30), GETDATE(), 126) AS runtime,
    mig.index_group_handle,
    mid.index_handle,
    CONVERT(decimal(28, 1), migs.avg_total_user_cost * migs.avg_user_impact * (migs.user_seeks + migs.user_scans)) AS improvement_measure,
    'CREATE INDEX missing_index_' + 
        CONVERT(varchar, mig.index_group_handle) + '_' + 

petesql

-- Script to retrieve index fragmentation levels in SQL Server
-- This script will list fragmented indexes in the database, showing table name, index name, fragmentation percentage, and more
SELECT 
    OBJECT_NAME(s.OBJECT_ID) AS TableName,  -- Table name where the index is located
    i.name AS IndexName,                    -- Name of the index
    ROUND(s.avg_fragmentation_in_percent, 2) AS FragmentationPercentage,  -- Fragmentation percentage rounded to 2 decimal places
    s.page_count AS PageCount,              -- Number of pages used by the index
    i.type_desc AS IndexType,               -- Type of the index (Clustered, Nonclustered, etc.)
    s.stats_id AS StatsID                   -- Statistics ID for the index
FROM