By using this statement in SQL Server:
EXEC sp_msforeachtable 'DROP TABLE ?'
I know it's possible to delete all tables at once.
Is there a similar statement for views? I tried this hoping to be lucky: EXEC sp_msforeachview 'DROP VIEW ?' but it doesn't work!
Here you have, no cursor needed:
DECLARE @sql VARCHAR(MAX) = ''
, @crlf VARCHAR(2) = CHAR(13) + CHAR(10) ;
SELECT @sql = @sql + 'DROP VIEW ' + QUOTENAME(SCHEMA_NAME(schema_id)) + '.' + QUOTENAME(v.name) +';' + @crlf
FROM sys.views v
PRINT @sql;
EXEC(@sql);
declare @SQL nvarchar(max)
set @SQL =
(
select 'drop view '+name+'; '
from sys.views
for xml path('')
)
exec (@SQL)
All answers don't account for constraints between views. This script will take this into account:
SET @schemeName = 'dbo'
SELECT @name =
(SELECT TOP 1 o.[name]
FROM sysobjects o
inner join sys.views v ON o.id = v.object_id
WHERE SCHEMA_NAME(v.schema_id) =@schemeName AND o.[type] = 'V' AND o.category = 0 AND o.[name] NOT IN
(
SELECT referenced_entity_name
FROM sys.sql_expression_dependencies AS sed
INNER JOIN sys.objects AS o ON sed.referencing_id = o.object_id
WHERE referenced_schema_name = @schemeName
)
ORDER BY [name])
WHILE @name IS NOT NULL
BEGIN
SELECT @SQL = 'DROP VIEW [' + @schemeName + '].[' + RTRIM(@name) +']'
EXEC (@SQL)
PRINT 'Dropped View: ' + @name
SELECT @name =
(SELECT TOP 1 o.[name]
FROM sysobjects o
inner join sys.views v ON o.id = v.object_id
WHERE SCHEMA_NAME(v.schema_id) = @schemeName AND o.[type] = 'V' AND o.category = 0 AND o.[name] NOT IN
(
SELECT referenced_entity_name
FROM sys.sql_expression_dependencies AS sed
INNER JOIN sys.objects AS o ON sed.referencing_id = o.object_id
WHERE referenced_schema_name = @schemeName
)
ORDER BY [name])
END
GO
This loops to all views and selects the TOP 1 view that is not present in the references systable.
I wanted a script to drop schema bound views in the correct dependency order, and I wanted it to run on sql azure where sys.dm_sql_referencing_entities
is not available. I also wanted to be able to view the sql being run before I actually ran it - which you can't do with the script in the answer by @RicNet. So I wrote this recursive query that use the other answers here as a foundation
DECLARE @sql VARCHAR(MAX) = ''
DECLARE @crlf VARCHAR(2) = CHAR(13) + CHAR(10);
;WITH allviews as
( --just combining schema and name
SELECT
object_id,
'[' + SCHEMA_NAME(schema_id) + '].[' + name + ']' AS viewname
FROM sys.views
),
dependents AS
(
SELECT
referencing.viewname dependentname,
referenced.viewname dependenton
FROM sys.sql_expression_dependencies r
INNER JOIN allviews referencing
ON referencing.object_id = r.referencing_id
INNER JOIN allviews referenced
ON referenced.object_id = r.referenced_id
)
,
nodependents
AS
(
SELECT
viewname name
FROM allviews v
LEFT JOIN dependents d
ON d.dependentname = viewname
WHERE d.dependentname IS NULL
)
,hierarchy AS
( --the hierarchy recurses the dependencies
SELECT
d.dependenton,
d.dependentname,
1 tier
FROM dependents d UNION ALL SELECT
d.dependenton,
d.dependentname,
h.tier + 1
FROM dependents d
INNER JOIN hierarchy h
ON h.dependenton = d.dependentname
--best thing I could think to stop the recursion was to
--stop when we reached an item with no dependents
WHERE h.dependenton NOT IN (SELECT
name
FROM nodependents)
),
combined as
( --need to add item with no dependents back in
SELECT
0 tier,
name
FROM nodependents UNION SELECT
tier,
dependentname
FROM hierarchy
)
SELECT
@sql = @sql + 'DROP VIEW ' + name + ';' + @crlf
FROM combined
GROUP BY name --need to group because of multiple dependency paths
ORDER BY MAX(tier) desc
PRINT @sql;
--commented out until I'm confident I want to run it
--EXEC(@sql)
Try this script
DECLARE @viewName varchar(500)
DECLARE cur CURSOR
FOR SELECT [name] FROM sys.objects WHERE type = 'v'
OPEN cur
FETCH NEXT FROM cur INTO @viewName
WHILE @@fetch_status = 0
BEGIN
EXEC('DROP VIEW ' + @viewName)
FETCH NEXT FROM cur INTO @viewName
END
CLOSE cur
DEALLOCATE cur
But what about schema?
The below script will help you if the views are part of schema
DECLARE @sql VARCHAR(MAX)='';
SELECT @sql=@sql+'DROP VIEW '+name +';' FROM
(
SELECT Name=[s].name + '.' + [v].name FROM sys.views [v]
LEFT OUTER JOIN sys.schemas [s]
ON
(
[v].[schema_id]=[s].[schema_id]
)
)
X
EXEC(@sql)
Since no one of the scripts I tried from the answers worked correctly in the case of multiple schemas I am including a working one.
--DBNAME, PUT YOU OWN ONE
use SIPE_ISU
DECLARE @viewName varchar(500) DECLARE cur CURSOR FOR SELECT sk.name + '.'+so.name FROM sys.objects so inner join sys.schemas sk on sk.schema_id = so.schema_id WHERE type = 'v' OPEN cur FETCH NEXT FROM cur INTO @viewName WHILE @@fetch_status = 0 BEGIN EXEC('DROP VIEW ' + @viewName) FETCH NEXT FROM cur INTO @viewName END CLOSE cur DEALLOCATE cur
DECLARE @sql VARCHAR(MAX) = ''
, @crlf VARCHAR(2) = CHAR(13) + CHAR(10) ;
SELECT @sql = @sql + 'DROP VIEW ' + QUOTENAME(SCHEMA_NAME(schema_id)) + '.' + QUOTENAME(v.name) +';' + @crlf
FROM sys.views v
PRINT @sql;
EXEC(@sql);
来源:https://stackoverflow.com/questions/11689557/delete-all-views-from-sql-server