50 Important Queries in SQL Server

EXEC sp_helpdb

exec sp_helptext @objname = 'Object_Name'

SELECT DISTINCT o.name, o.xtype  
  
FROM syscomments c  
  
INNER JOIN sysobjects o ON c.id=o.id  
  
WHERE o.xtype='P'

SELECT DISTINCT o.name, o.xtype  
  
FROM syscomments c  
  
INNER JOIN sysobjects o ON c.id=o.id  
  
WHERE c.TEXT LIKE '%Table_Name%' AND o.xtype='P'

EXEC sp_MSforeachtable @command1="print '?' DBCC DBREINDEX ('?', ' ', 80)"  
  
GO  
  
EXEC sp_updatestats  
  
GO

;WITH stored_procedures AS (  
  
SELECT  
  
oo.name AS table_name,  
  
ROW_NUMBER() OVER(partition by o.name,oo.name ORDER BY o.name,oo.name) AS row  
  
FROM sysdepends d  
  
INNER JOIN sysobjects o ON o.id=d.id  
  
INNER JOIN sysobjects oo ON oo.id=d.depid  
  
WHERE o.xtype = 'P' AND o.name LIKE '%SP_NAme%' )  
  
SELECT Table_name FROM stored_procedures  
  
WHERE row = 1

SELECT sob.name AS Table_Name,  
  
SUM(sys.length) AS [Size_Table(Bytes)]  
  
FROM sysobjects sob, syscolumns sys  
  
WHERE sob.xtype='u' AND sys.id=sob.id  
  
GROUP BY sob.name

SELECT
TABLE_NAME FROM INFORMATION_SCHEMA.TABLES  
where
Table_NAME NOT IN
(
SELECT DISTINCT c.TABLE_NAME FROM INFORMATION_SCHEMA.COLUMNS c
INNER
JOIN sys.identity_columns ic
on
(c.COLUMN_NAME=ic.NAME))
AND
TABLE_TYPE ='BASE TABLE'

SELECT
DISTINCT
Constraint_Name AS [Constraint],
Table_Schema AS [Schema],
Table_Name AS [TableName] FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
GO

SELECT
DISTINCT
Constraint_Name AS [Constraint],
Table_Schema AS [Schema],
Table_Name AS [TableName] FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE INFORMATION_SCHEMA.KEY_COLUMN_USAGE.TABLE_NAME='Table_Name'
GO

EXEC sp_MSForEachTable '
IF OBJECTPROPERTY(object_id(''?''), ''TableHasIdentity'') = 1  
DBCC CHECKIDENT (''?'', RESEED, 0)

CREATE TABLE #Tab
(
Table_Name [varchar](max),
Total_Records int
);
EXEC sp_MSForEachTable @command1=' Insert Into #Tab(Table_Name, Total_Records) SELECT ''?'', COUNT(*) FROM ?'
SELECT * FROM #Tab t ORDER BY t.Total_Records DESC;
DROP TABLE #Tab;

SELECT @@VERSION AS Version_Name

SELECT @@LANGUAGE AS Current_Language;

ALTER TABLE Table_Name NOCHECK CONSTRAINT ALL

EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'

SELECT @@LANGID AS 'Language ID'

SELECT @@MAX_PRECISION AS 'MAX_PRECISION'

SELECT @@SERVERNAME AS 'Server_Name'

SELECT @@SERVICENAME AS 'Service_Name'

SELECT @@SPID AS 'Session_Id'

SELECT @@TEXTSIZE AS 'Text_Size'

EXEC master..xp_fixeddrives

ALTER TABLE Table_Name DISABLE TRIGGER Trigger_Name

ALTER TABLE Employee DISABLE TRIGGER TR_Insert_Salary

ALTER TABLE Table_Name ENABLE TRIGGER Trigger_Name

ALTER TABLE Employee ENABLE TRIGGER TR_Insert_Salary

ALTER TABLE Table_Name DISABLE TRIGGER ALL

ALTER TABLE Demo DISABLE TRIGGER ALL

ALTER TABLE Table_Name ENABLE TRIGGER ALL

ALTER TABLE Demo ENABLE TRIGGER ALL

Use Database_Name
Exec sp_msforeachtable "ALTER TABLE ? DISABLE TRIGGER all"

Use Demo
Exec sp_msforeachtable "ALTER TABLE ? ENABLE TRIGGER all"

SELECT name,modify_date
FROM sys.objects
WHERE type='P'
AND DATEDIFF(D,modify_date,GETDATE())< N

SELECT name,sys.objects.create_date
FROM sys.objects
WHERE type='P'
AND DATEDIFF(D,sys.objects.create_date,GETDATE())< N

EXEC sp_recompile'Procedure_Name';
GO

EXEC sp_recompile N'Table_Name';
GO

SELECT OBJECT_NAME(c.OBJECT_ID) as Table_Name, c.name as Column_Name
FROM sys.columns AS c
JOIN sys.types AS t ON c.user_type_id=t.user_type_id
WHERE t.name = 'Data_Type'

SELECT OBJECT_NAME(c.OBJECT_ID) as Table_Name, c.name as Column_Name
FROM sys.columns AS c
JOIN sys.types AS t ON c.user_type_id=t.user_type_id
WHERE c.is_nullable=0 AND OBJECT_NAME(c.OBJECT_ID)='Table_Name'

SELECT name AS Table_Name
FROM sys.tables
WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasPrimaryKey') = 0
ORDER BY Table_Name;

SELECT name AS Table_Name
FROM sys.tables
WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasForeignKey') = 0
ORDER BY Table_Name;

SELECT name AS Table_Name
FROM sys.tables
WHERE OBJECTPROPERTY(OBJECT_ID,'TableHasIdentity') = 0
ORDER BY Table_Name;

SELECT CONVERT(VARCHAR(25),DATEADD(DAY,-(DAY(GETDATE()))+1,GETDATE()),105) First_Date_Current_Month;

SELECT CONVERT(VARCHAR(25),DATEADD(DAY,-(DAY(GETDATE())),GETDATE()),105) Last_Date_Previous_Month;

SELECT CONVERT(VARCHAR(25),DATEADD(DAY,-(DAY(GETDATE())), DATEADD(MONTH,1,GETDATE())),105) Last_Date_Current_Month;

SELECT CONVERT(VARCHAR(25),DATEADD(DAY,-(DAY(GETDATE())), DATEADD(MONTH,1,GETDATE())+1),105) First_Date_Next_Month;

UPDATE Table_Name SET Column1=Column2, Column2=Column1

Declare @Drop_SP Nvarchar(MAX)
Declare My_Cursor Cursor For Select [name] From sys.objects where type = 'p'
Open My_Cursor
Fetch Next From My_Cursor Into @Drop_SP
While @@FETCH_STATUS= 0
Begin
Exec('DROP PROCEDURE ' + @Drop_SP)
Fetch Next From My_Cursor Into @Drop_SP
End
Close My_Cursor
Deallocate My_Cursor

Declare @Drop_View Nvarchar(MAX)
Declare My_Cursor Cursor For Select [name] From sys.objects where type = 'v'
Open My_Cursor
Fetch Next From My_Cursor Into @Drop_View
While @@FETCH_STATUS = 0
Begin
Exec('DROP VIEW ' + @Drop_View)
Fetch Next From My_Cursor Into @Drop_View
End
Close My_Cursor
Deallocate My_Cursor

EXEC sys.sp_MSforeachtable @command1 = 'Drop Table ?'

SELECT * FROM INFORMATION_SCHEMA.COLUMNS
WHERE INFORMATION_SCHEMA.COLUMNS.TABLE_NAME=’Table_Name’

SELECT TABLE_NAME,COLUMN_NAME,CONSTRAINT_NAME FROM INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE

SELECT * FROM INFORMATION_SCHEMA.VIEW_TABLE_USAGE

SELECT * FROM INFORMATION_SCHEMA.VIEW_COLUMN_USAGE