SQL server deletes all tables and all stored procedures in the database

scene ：
SQL Server in , When you need to delete all tables or all stored procedures , The manual method can only delete one by one , Personal time consuming , So I want to make a statement to realize such a requirement .
 
If deleted due to foreign key constraints table Failure , Delete all constraints first ：

--/ The first 1 Step ********** Delete foreign key constraints for all tables *************************/

DECLARE c1 cursor for 
    select 'alter table ['+ object_name(parent_obj) + '] drop constraint ['+name+']; '
    from sysobjects 
    where xtype = 'F'
open c1
declare @c1 varchar(8000)
fetch next from c1 into @c1
while(@@fetch_status=0)
    begin 
        exec(@c1)
        fetch next from c1 into @c1
    end
close c1
deallocate c1
go

--/ The first 2 Step ********** Delete all tables *************************/

use database
declare @tname varchar(8000)
set @tname=''
select @[email protected] + Name + ',' from sysobjects where xtype='U'
select @tname='drop table ' + left(@tname,len(@tname)-1)
exec(@tname)
go

Deleting all stored procedures is the same , But there is no need to take the first step , Just put the second 2 Code of step where xtype='U' Change to where xtype='P',drop table Change to drop Procedure

sysobjects Of xtype Means :

Every object created in the database （ constraint 、 The default value is 、 journal 、 The rules 、 Stored procedure, etc ） Take a row in the table . Only in tempdb Inside , Each temporary object occupies only one row in the table . 

 

Name data type describe  
name sysname Object name . 
Id int Object identification number . 
xtype char(2) object type . It can be one of the following object types ： 
C = CHECK constraint  
D = Default value or DEFAULT constraint  
F = FOREIGN KEY constraint  
L = journal  
FN = Scalar function  
IF = Embedded table functions  
P = stored procedure  
PK = PRIMARY KEY constraint （ The type is K） 
RF = Copy filter stored procedure  
S = The system tables  
TF = Table function  
TR = trigger  
U = User table  
UQ = UNIQUE constraint （ The type is K） 
V = View  
X = Extended stored procedure  

uid smallint The user of the owner object ID. 
info smallint Retain . Internal use only . 
status int Retain . Internal use only . 
base_schema_ 
ver int Retain . Internal use only . 
replinfo int Retain . For replication . 
parent_obj int The object identification number of the parent object （ for example , For triggers or constraints , The identification number is table ID）. 
crdate datetime The creation date of the object . 
ftcatid smallint Full text catalog identifier for all user tables registered for full-text indexing , For all users who are not registered, the table is 0. 
schema_ver int Version number , The version number is incremented every time the schema of the table changes . 
stats_schema_ 
ver int Retain . Internal use only . 
type char(2) object type . It can be one of the following values ： 
C = CHECK constraint  
D = Default value or DEFAULT constraint  
F = FOREIGN KEY constraint  
FN = Scalar function  
IF = Embedded table functions  
K = PRIMARY KEY or UNIQUE constraint  
L = journal  
P = stored procedure  
R = The rules  
RF = Copy filter stored procedure  
S = The system tables  
TF = Table function  
TR = trigger  
U = User table  
V = View  
X = Extended stored procedure  

userstat smallint Retain . 
sysstat smallint Internal status information . 
indexdel smallint Retain . 
refdate datetime For later use . 
version int For later use . 
deltrig int Retain . 
instrig int Retain . 
updtrig int Retain . 
seltrig int Retain . 
category int For publishing 、 Constraints and identification . 
cache smallint Retain .