This code snippet iterates through all user-defined stored procedures (excluding system procedures) and drops them one by one.
Note. The provided code snippet is a dangerous script that should not be run in production environments. It iterates through all user-defined stored procedures in the database and drops them one by one. This can have serious consequences, especially if you have mission-critical procedures in your database.
declare @procName varchar(500) ,@type varchar(20)
declare cur cursor
for
(
select [name],type from sys.objects where type in ('P','V','FN','TF','IF') and is_ms_shipped = 0
union
select [name],'TT' from sys.types where is_user_defined = 1
)
order by type,name
open cur
fetch next from cur into @procName ,@type
while @@fetch_status = 0
begin
if @type = 'P'
exec('drop procedure [' + @procName + ']')
else if @type = 'V'
exec('drop view [' + @procName + ']')
else if @type in ( 'FN','TF','IF')
exec('drop function [' + @procName + ']')
else if @type = 'TT'
exec('drop TYPE [' + @procName + ']')
print @procName +' '+ @type
fetch next from cur into @procName,@type
end
close cur
deallocate cur
Understanding the Code
The provided code demonstrates dropping user-defined stored procedures in a database. Here's a breakdown.
- Variable declaration
- @procName: String variable to store the name of each procedure.
- cur: Cursor object to iterate through existing procedures.
- Cursor definition:
- Uses sys.objects system table to find user-defined procedures (type = 'p') excluding system procedures (is_ms_shipped = 0).
- Looping through procedures
- fetch next retrieves the next procedure's name into @procName.
- while @@fetch_status = 0 repeats the loop until no more procedures are found.
- Dropping procedures
- Constructs a dynamic SQL statement (exec) to drop the current procedure (@procName).
- Executes the dynamic statement.
- Cleanup
- Closes and deallocates the cursor to free resources.