すべての拡張プロパティを一度に削除するスクリプトが必要な場合は、Jamie Thomsonが作成した、すべての拡張プロパティの削除を生成するスクリプトを使用してください。この
私は彼のスクリプトをここに貼り付けました（記事が削除された場合の謝辞とともに完全に）：
/*
This script will generate calls to sp_dropextendedproperty for every
extended property that exists in your database.
Actually, a caveat: I don't promise that it will catch each and every
extended property that exists, but I'm confident it will catch most of them!
It is based on this:
http://blog.hongens.nl/2010/02/25/drop-all-extended-properties-in-a-mssql-database/
by Angelo Hongens.
Also had lots of help from this:
http://www.sqlservercentral.com/articles/Metadata/72609/
by Adam Aspin
Adam actually provides a script at that link to do something very similar
but when I ran it I got an error:
Msg 468, Level 16, State 9, Line 78
Cannot resolve the collation conflict between "Latin1_General_100_CS_AS" and "Latin1_General_CI_AS" in the equal to operation.
So I put together this version instead.
Use at your own risk.
Jamie Thomson
2012-03-25
*/
/*Are there any extended properties? Let's take a look*/
select *,OBJECT_NAME(major_id) from sys.extended_properties xp
/*Now let's generate sp_dropextendedproperty statements for all of them.*/
--tables
set nocount on;
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(xp.major_id) + ''''
from sys.extended_properties xp
join sys.tables t on xp.major_id = t.object_id
where xp.class_desc = 'OBJECT_OR_COLUMN'
and xp.minor_id = 0
union
--columns
select 'EXEC sp_dropextendedproperty
@name = '''+sys.extended_properties.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(extended_properties.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(extended_properties.major_id) + '''
,@level2type = ''column''
,@level2name = ''' + columns.name + ''''
from sys.extended_properties
join sys.columns
on columns.object_id = extended_properties.major_id
and columns.column_id = extended_properties.minor_id
where extended_properties.class_desc = 'OBJECT_OR_COLUMN'
and extended_properties.minor_id > 0
union
--check constraints
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(cc.parent_object_id) + '''
,@level2type = ''constraint''
,@level2name = ''' + cc.name + ''''
from sys.extended_properties xp
join sys.check_constraints cc on xp.major_id = cc.object_id
union
--check constraints
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(cc.parent_object_id) + '''
,@level2type = ''constraint''
,@level2name = ''' + cc.name + ''''
from sys.extended_properties xp
join sys.default_constraints cc on xp.major_id = cc.object_id
union
--views
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''view''
,@level1name = ''' + object_name(xp.major_id) + ''''
from sys.extended_properties xp
join sys.views t on xp.major_id = t.object_id
where xp.class_desc = 'OBJECT_OR_COLUMN'
and xp.minor_id = 0
union
--sprocs
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''procedure''
,@level1name = ''' + object_name(xp.major_id) + ''''
from sys.extended_properties xp
join sys.procedures t on xp.major_id = t.object_id
where xp.class_desc = 'OBJECT_OR_COLUMN'
and xp.minor_id = 0
union
--FKs
select 'EXEC sp_dropextendedproperty
@name = '''+xp.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(xp.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(cc.parent_object_id) + '''
,@level2type = ''constraint''
,@level2name = ''' + cc.name + ''''
from sys.extended_properties xp
join sys.foreign_keys cc on xp.major_id = cc.object_id
union
--PKs
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''SCHEMA'', @level0name = [' + SCH.name + '], @level1type = ''TABLE'', @level1name = [' + TBL.name + '] , @level2type = ''CONSTRAINT'', @level2name = [' + SKC.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.tables TBL
INNER JOIN sys.schemas SCH
ON TBL.schema_id = SCH.schema_id
INNER JOIN sys.extended_properties SEP
INNER JOIN sys.key_constraints SKC
ON SEP.major_id = SKC.object_id
ON TBL.object_id = SKC.parent_object_id
WHERE SKC.type_desc = N'PRIMARY_KEY_CONSTRAINT'
union
--Table triggers
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''SCHEMA'', @level0name = [' + SCH.name + '], @level1type = ''TABLE'', @level1name = [' + TBL.name + '] , @level2type = ''TRIGGER'', @level2name = [' + TRG.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.tables TBL
INNER JOIN sys.triggers TRG
ON TBL.object_id = TRG.parent_id
INNER JOIN sys.extended_properties SEP
ON TRG.object_id = SEP.major_id
INNER JOIN sys.schemas SCH
ON TBL.schema_id = SCH.schema_id
union
--UDF params
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''SCHEMA'', @level0name = [' + SCH.name + '], @level1type = ''FUNCTION'', @level1name = [' + OBJ.name + '] , @level2type = ''PARAMETER'', @level2name = [' + PRM.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
INNER JOIN sys.objects OBJ
ON SEP.major_id = OBJ.object_id
INNER JOIN sys.schemas SCH
ON OBJ.schema_id = SCH.schema_id
INNER JOIN sys.parameters PRM
ON SEP.major_id = PRM.object_id
AND SEP.minor_id = PRM.parameter_id
WHERE SEP.class_desc = N'PARAMETER'
AND OBJ.type IN ('FN', 'IF', 'TF')
union
--sp params
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''SCHEMA'', @level0name = [' + SCH.name + '], @level1type = ''PROCEDURE'', @level1name = [' + SPR.name + '] , @level2type = ''PARAMETER'', @level2name = [' + PRM.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
INNER JOIN sys.procedures SPR
ON SEP.major_id = SPR.object_id
INNER JOIN sys.schemas SCH
ON SPR.schema_id = SCH.schema_id
INNER JOIN sys.parameters PRM
ON SEP.major_id = PRM.object_id
AND SEP.minor_id = PRM.parameter_id
WHERE SEP.class_desc = N'PARAMETER'
union
--DB
SELECT
'EXEC sys.sp_dropextendedproperty @name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
WHERE class_desc = N'DATABASE'
union
--schema
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''SCHEMA'', @level0name = [' + SCH.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
INNER JOIN sys.schemas SCH
ON SEP.major_id = SCH.schema_id
WHERE SEP.class_desc = N'SCHEMA'
union
--DATABASE_FILE
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''FILEGROUP'', @level0name = [' + DSP.name + '], @level1type = ''LOGICAL FILE NAME'', @level1name = ' + DBF.name + ' ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
INNER JOIN sys.database_files DBF
ON SEP.major_id = DBF.file_id
INNER JOIN sys.data_spaces DSP
ON DBF.data_space_id = DSP.data_space_id
WHERE SEP.class_desc = N'DATABASE_FILE'
union
--filegroup
SELECT
'EXEC sys.sp_dropextendedproperty @level0type = N''FILEGROUP'', @level0name = [' + DSP.name + '] ,@name = ''' + REPLACE(CAST(SEP.name AS NVARCHAR(300)),'''','''''') + ''''
FROM sys.extended_properties SEP
INNER JOIN sys.data_spaces DSP
ON SEP.major_id = DSP.data_space_id
WHERE DSP.type_desc = 'ROWS_FILEGROUP'
union
-- INDEX
select 'EXEC sp_dropextendedproperty
@name = '''+sys.extended_properties.name+'''
,@level0type = ''schema''
,@level0name = ''' + object_schema_name(extended_properties.major_id) + '''
,@level1type = ''table''
,@level1name = ''' + object_name(extended_properties.major_id) + '''
,@level2type = ''index''
,@level2name = ''' + indexes.name + ''''
from sys.extended_properties
join sys.indexes
on indexes.object_id = extended_properties.major_id
and indexes.index_id = extended_properties.minor_id
where extended_properties.class_desc = 'INDEX'
and extended_properties.minor_id > 0