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SP_MSForeachtable


Some times we need to query on the all the tables in one data base single statement. We use SP_MSForeachtable this is known as undocumented stored procedures . These all are system stored procedures. These stored procedures is place in Master database.


NOTE:

Please do not run all these queries in Production environment

Example:

create database UnDocumentedStoredProcedure

use UnDocumentedStoredProcedure


create table Emp
(
ID int identity(1,1),
Name varchar(50),
Salary int
)

insert into Emp(Name,Salary) values('rakesh',8000),('raju',9000)


create table Dept
(
ID int identity(1,1),
DeptName varchar(100)
)

insert into Dept(DeptName) values('CSE'),('IT')


We are created new database and also created some table with some dummy data.

Select all tables data:

exec sp_MSForeachtable 'select * from ?'

Checking all tables names with number of rows:

exec sp_MSForeachtable 'select ''?'',count(*) from ?'

Delete all tables data:

exec sp_MSForeachtable 'delete from ?'

Truncate all tables data:

exec sp_MSForeachtable 'truncate table ?'

Disable all constraints from all table :

exec sp_MSForeachtable 'alter table ? nocheck constraint all'

Enable all constraints from all table :

exec sp_MSForeachtable 'alter table ? check constraint all'


Note:

Disabling and enabling constraints works only when check constraint or foreign key constraint on top table.
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