Home Microsoft SQL Server DigiMailing iRN Contact
    Keyword



sys.sp_MSmergefixup_constraints_name

  No additional text.


Syntax

-- Name: sp_MSmergefixup_constraints_name

-- Owner: QunGuo

-- Description: this is a helper procedure which is used by ddl trigger to
--		handle the condition where user did not provide explicit constraint
--		name, by retrieving constraint name from system catelog view
--		it covers CHECK, UNIQUE, FOREIGN KEY, and works off
--		prepopulated #merge_altertable table

-- Parameter:

-- Returns: 1 or 0   0 = success

-- Security: internal, not exposed
-- Requires Certificate signature for catalog access

create procedure sys.sp_MSmergefixup_constraints_name
(
--pass in these constant from caller, so we don't have define them everwhere
    @schemasubtype_addun int
    ,@schemasubtype_addfk int
    ,@schemasubtype_addchk int
    ,@objid int
    ,@debug_print bit = 0
)
as
begin
	declare @colname nvarchar(512)
					,@typeid nvarchar(32)
					,@modified_date datetime
					,@row_id int
					,@type_mask int
					,@done_mask int
	declare @subtype_addfk int
			,@subtype_addun int
			,@subtype_addchk int

	begin tran fixup_constraints_name
	save tran fixup_constraints_name

    set @subtype_addun = 0x8   --N'ADDUNIQUE'
    set @subtype_addfk = 0x4   --N'ADDREFERENCE'
    set @subtype_addchk = 0x10	--N'ADDCHECK'

	set @done_mask = @subtype_addun | @subtype_addfk | @subtype_addchk
	DECLARE #fkcursor CURSOR LOCAL FAST_FORWARD for
		select name, type, modify_date  from sys.key_constraints
					where parent_object_id = @objid and
						type = 'UQ' collate database_default
		union
		select name, type, modify_date from sys.foreign_keys	
					where parent_object_id = @objid
		union
		select name, type, modify_date from sys.check_constraints
					where parent_object_id = @objid
		order by modify_date desc

	open #fkcursor
	fetch #fkcursor into @colname, @typeid, @modified_date
	while @@fetch_status <> -1
	begin
		if @debug_print = 1
			select 'stage' = 'sp_MSmergefixup_constraints_name:query'
									,'@colname' = @colname
									,'@typeid' = @typeid
									,'@modified_date' = @modified_date
									,'@type_mask' = @type_mask
									,'@done_mask' = @done_mask

		set @row_id = NULL
		select top 1 @row_id = id
					from #merge_altertable where
						schemasubtype = case @typeid when N'UQ' then @schemasubtype_addun
																		when N'F' then @schemasubtype_addfk
																		when N'C' then @schemasubtype_addchk
																		end
						and len(isnull(ColumnName, '')) = 0 order by id desc

		if @row_id is null
		begin
			--exit if we've finished processing all empty names for un/fk/chk
			if (@type_mask & @done_mask) = @done_mask
				break
			else
				select @type_mask = @type_mask |
													case @typeid when N'UQ' then @schemasubtype_addun
																		when N'F' then @schemasubtype_addfk
																		when N'C' then @schemasubtype_addchk
																		end
		end
		else
		begin
			if @debug_print = 1
				select 'stage' = 'sp_MSmergefixup_constraints_name:update'
										,'@row_id' = @row_id
										, * from #merge_altertable where id = @row_id

			update #merge_altertable set ColumnName = @colname where id = @row_id
			if @@error > 0
				goto FAILURE
		end

			fetch #fkcursor into @colname, @typeid, @modified_date
	end
	close #fkcursor
	deallocate #fkcursor

	if @debug_print = 1
		select 'stage' = 'sp_MSmergefixup_constraints_name:exit'
								,'comments' = 'un/fk/chk name filled'
								,* from #merge_altertable

	commit tran fixup_constraints_name
	return 0
FAILURE:
	close #fkcursor
	deallocate #fkcursor
	rollback tran fixup_constraints_name
	commit tran
	return 1

end

 
Last revision 2008RTM
See also

  sp_MSmerge_altertable (Procedure)
       



News

  Query a named instance
Sybase+ASE+silent+install
SQL 2008 R2
Deprecated procedures in SQL2008
Reporting Services item-level role definitions
Create all your missing indexes
Converting datetime field
Start MSSQL Server Profiler at time
Replicating MSSQL Server views
Exploring Microsoft Sharepoint
The OLE DB provider "SQLNCLI10" for linked server indicates.
Mobile solar charger
Oracle to SQL Server replication
Cannot insert the value NULL into column
Undocumented Microsoft SQL Server 2008
VMware
Zoekmachine optimalisatie
SQL Servers hidden objects
FckEditor
Flash in Ajax
De hype die AJAX heet
Barcode scannen
MySQL; Gratis, makkelijk en snel!
PHP
sIFR; de combinatie tussen HTML en Flash