Recent Posts | - July, 2024-7,(1)
- May, 2024-5,(2)
- May, 2023-5,(1)
- February, 2023-2,(1)
- November, 2022-11,(1)
- July, 2022-7,(2)
- March, 2022-3,(1)
- November, 2021-11,(2)
- August, 2021-8,(2)
- July, 2021-7,(2)
- June, 2021-6,(1)
- May, 2021-5,(1)
- March, 2021-3,(1)
- February, 2021-2,(2)
- January, 2021-1,(7)
- December, 2020-12,(3)
- March, 2020-3,(2)
- February, 2020-2,(1)
- December, 2019-12,(2)
- November, 2019-11,(1)
- October, 2019-10,(1)
- September, 2019-9,(1)
- August, 2019-8,(1)
- May, 2019-5,(1)
- April, 2019-4,(2)
- March, 2019-3,(2)
- December, 2018-12,(1)
- November, 2018-11,(4)
- July, 2018-7,(1)
- May, 2018-5,(3)
- April, 2018-4,(2)
- February, 2018-2,(3)
- January, 2018-1,(3)
- November, 2017-11,(2)
- August, 2017-8,(1)
- June, 2017-6,(3)
- May, 2017-5,(5)
- February, 2017-2,(1)
- December, 2016-12,(1)
- October, 2016-10,(2)
- September, 2016-9,(1)
- August, 2016-8,(1)
- July, 2016-7,(1)
- March, 2016-3,(2)
- February, 2016-2,(3)
- December, 2015-12,(5)
- November, 2015-11,(5)
- September, 2015-9,(1)
- August, 2015-8,(2)
- July, 2015-7,(1)
- March, 2015-3,(2)
- February, 2015-2,(1)
- December, 2014-12,(4)
- July, 2014-7,(2)
- June, 2014-6,(2)
- May, 2014-5,(3)
- April, 2014-4,(3)
- March, 2014-3,(1)
- December, 2013-12,(2)
- November, 2013-11,(1)
- July, 2013-7,(1)
- June, 2013-6,(2)
- May, 2013-5,(1)
- March, 2013-3,(3)
- February, 2013-2,(3)
- January, 2013-1,(1)
- December, 2012-12,(3)
- November, 2012-11,(1)
- October, 2012-10,(1)
- September, 2012-9,(1)
- August, 2012-8,(1)
- July, 2012-7,(6)
- June, 2012-6,(1)
- April, 2012-4,(1)
- March, 2012-3,(3)
- February, 2012-2,(3)
- January, 2012-1,(4)
- December, 2011-12,(3)
- October, 2011-10,(3)
- September, 2011-9,(1)
- August, 2011-8,(10)
- July, 2011-7,(2)
- June, 2011-6,(7)
- March, 2011-3,(2)
- February, 2011-2,(3)
- January, 2011-1,(1)
- September, 2010-9,(1)
- August, 2010-8,(2)
- June, 2010-6,(1)
- May, 2010-5,(1)
- April, 2010-4,(3)
- March, 2010-3,(2)
- February, 2010-2,(3)
- January, 2010-1,(1)
- December, 2009-12,(3)
- November, 2009-11,(3)
- October, 2009-10,(2)
- September, 2009-9,(5)
- August, 2009-8,(3)
- July, 2009-7,(9)
- June, 2009-6,(2)
- May, 2009-5,(2)
- April, 2009-4,(9)
- March, 2009-3,(6)
- February, 2009-2,(4)
- January, 2009-1,(10)
- December, 2008-12,(5)
- November, 2008-11,(5)
- October, 2008-10,(13)
- September, 2008-9,(10)
- August, 2008-8,(7)
- July, 2008-7,(8)
- June, 2008-6,(12)
- May, 2008-5,(14)
- April, 2008-4,(12)
- March, 2008-3,(17)
- February, 2008-2,(10)
- January, 2008-1,(16)
- December, 2007-12,(6)
- November, 2007-11,(4)
|
|
|
|
SQL Server Drop Constraints unknown name
|
8/12/2021 6:01:02 AM
|
|
SQL Server will create constraints with a default name, that is not consistent across implementations if you do not specify a name.
Best practice would be to always specify a name.
But if you inherit a database across 1000's of locations and have to write update scripts, you may come across the need to drop a constraint for a column when you don't know the constraint name.
This script will find the constraint name based off the column and dynamically generate a drop statement for it.
SET @SelectStatement
= (SELECT
'ALTER TABLE [Machines] DROP CONSTRAINT '
+
name
FROM
sysobjects WHERE parent_obj
=
object_id('TableName')
AND xtype
=
'D'
AND
name
LIKE
'%ColumnName%')
EXECUTE
sp_executesql
@SelectStatement
|
Blog Home
|
|