Solved

hat's the tsql code for creating primary key out of the 2 columns

Posted on 2011-03-22
4
432 Views
Last Modified: 2012-05-11
Hi, I'm altering an existing table to a manyTomany table.  
1.  Does manyTomany need Pk?
2.  What's the tsql code for creating primary key out of the 2 columns, personID, Position_ID?
Thanks.  I know I have to drop the current primary key first, PersonIs_ID
Below is the table definition.  
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[personis](
	[PersonIs_ID] [int] IDENTITY(4221,1) NOT NULL,
	[personID] [int] NOT NULL DEFAULT ((0)),
	[Position_ID] [int] NOT NULL DEFAULT ((0)),
	[Position_Title] [nvarchar](max) NULL,
	[PrimarySecondary] [nvarchar](20) NULL DEFAULT (N'Primary'),
	[Position_Bio] [nvarchar](max) NULL,
	[Position_Narrative] [nvarchar](max) NULL,
	[Position_Narrative_short] [nvarchar](200) NULL DEFAULT (NULL),
	[web_visible] [smallint] NULL DEFAULT ((1)),
	[picture] [nvarchar](100) NULL DEFAULT (NULL),
 CONSTRAINT [PK_personis_PersonIs_ID] PRIMARY KEY CLUSTERED 
(
	[PersonIs_ID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO
ALTER TABLE [dbo].[personis]  WITH CHECK ADD  CONSTRAINT [FK_personis_person] FOREIGN KEY([personID])
REFERENCES [dbo].[person] ([personID])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[personis] CHECK CONSTRAINT [FK_personis_person]

Open in new window

0
Comment
Question by:lapucca
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 60

Expert Comment

by:chapmandew
ID: 35192696
CREATE TABLE [dbo].[personis](
      [PersonIs_ID] [int] IDENTITY(4221,1) NOT NULL,
      [personID] [int] NOT NULL DEFAULT ((0)),
      [Position_ID] [int] NOT NULL DEFAULT ((0)),
      [Position_Title] [nvarchar](max) NULL,
      [PrimarySecondary] [nvarchar](20) NULL DEFAULT (N'Primary'),
      [Position_Bio] [nvarchar](max) NULL,
      [Position_Narrative] [nvarchar](max) NULL,
      [Position_Narrative_short] [nvarchar](200) NULL DEFAULT (NULL),
      [web_visible] [smallint] NULL DEFAULT ((1)),
      [picture] [nvarchar](100) NULL DEFAULT (NULL),
 CONSTRAINT [PK_personis_PersonIs_ID] PRIMARY KEY CLUSTERED
(
      [PersonIs_ID] ASC, Position_ID ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]

GO
ALTER TABLE [dbo].[personis]  WITH CHECK ADD  CONSTRAINT [FK_personis_person] FOREIGN KEY([personID])
REFERENCES [dbo].[person] ([personID])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[personis] CHECK CONSTRAINT [FK_personis_person]
0
 

Author Comment

by:lapucca
ID: 35193236
The create table code is just to show you the table information.  I'm looking for tsql code to create a PK using those 2 columns. Thank you.
0
 
LVL 60

Accepted Solution

by:
chapmandew earned 500 total points
ID: 35193264
I already have it in there...but, a separate statement would be:

alter table personis
add CONSTRAINT [PK_personis_PersonIs_ID] PRIMARY KEY CLUSTERED
(
      [PersonIs_ID] ASC, Position_ID ASC
)

0
 

Author Closing Comment

by:lapucca
ID: 35193277
Thank you.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

'Between' is such a common word we rarely think about it but in SQL it has a very specific definition we should be aware of. While most database vendors will have their own unique phrases to describe it (see references at end) the concept in common …
In this article I will describe the Backup & Restore method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
Come and listen to Percona CEO Peter Zaitsev discuss what’s new in Percona open source software, including Percona Server for MySQL (https://www.percona.com/software/mysql-database/percona-server) and MongoDB (https://www.percona.com/software/mongo-…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…

724 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question