Solved

How to identify particular table's particular column refer where?

Posted on 2013-12-18
5
302 Views
Last Modified: 2013-12-19
In my DB I have a table called tAuditLog which has column TranID. I would like to get list of tables which refer this column as Forgine key.


Please note that the same column TranID could exist in some other table as well. I dont want to list them. Please assist.
0
Comment
Question by:Easwaran Paramasivam
[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
  • 3
  • 2
5 Comments
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 39726389
Hi.

You may want to look at INFORMATION_SCHEMA.KEY_COLUMN_USAGE view, or use the sys.foreign_keys / sys.foreign_key_columns view.

Kevin

EDIT: I copied from wrong SQL query.  The above views are what I meant.  I will post an example query in a moment in case you are not familiar with the system views.
0
 
LVL 60

Accepted Solution

by:
Kevin Cross earned 500 total points
ID: 39726414
Here is an example as promised:
SELECT TableName = t.[name], ColumnName = c.[name]
FROM sys.foreign_key_columns fk
JOIN sys.tables t ON t.object_id = fk.parent_object_id
JOIN sys.columns c ON c.object_id = t.object_id 
 AND c.column_id = fk.parent_column_id
/* joins to filter referenced table and column. */
JOIN sys.tables tref ON tref.object_id = fk.referenced_object_id
JOIN sys.columns cref ON cref.object_id = tref.object_id 
 AND cref.column_id = fk.referenced_column_id
WHERE tref.[name] = 'tAuditLog' AND cref.[name] = 'TranID'
;

Open in new window

0
 
LVL 17

Expert Comment

by:dbaSQL
ID: 39726731
SELECT
r.Table_Name,r.Column_Name
FROM
INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE u INNER JOIN INFORMATION_SCHEMA.REFERENTIAL_CONSTRAINTS fk
  ON u.CONSTRAINT_CATALOG = fk.UNIQUE_CONSTRAINT_CATALOG
  AND u.CONSTRAINT_SCHEMA = fk.UNIQUE_CONSTRAINT_SCHEMA
AND u.CONSTRAINT_NAME = fk.UNIQUE_CONSTRAINT_NAME INNER JOIN INFORMATION_SCHEMA.CONSTRAINT_COLUMN_USAGE r
    ON r.CONSTRAINT_CATALOG = fk.CONSTRAINT_CATALOG
    AND r.CONSTRAINT_SCHEMA = fk.CONSTRAINT_SCHEMA
    AND r.CONSTRAINT_NAME = fk.CONSTRAINT_NAME
WHERE u.TABLE_NAME = 'TABLE NAME'
  AND u.COLUMN_NAME = 'COLUMN NAME'
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 39726776
Good example, @dbaSQL.  I must not have had enough coffee this morning as I listed the correct INFORMATION_SCHEMA view then edited it. *sigh*
0
 
LVL 17

Expert Comment

by:dbaSQL
ID: 39726823
No worries.  We've all been there.
0

Featured Post

NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

Question has a verified solution.

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

Introduction: When running hybrid database environments, you often need to query some data from a remote db of any type, while being connected to your MS SQL Server database. Problems start when you try to combine that with some "user input" pass…
If you have heard of RFC822 date formats, they can be quite a challenge in SQL Server. RFC822 is an Internet standard format for email message headers, including all dates within those headers. The RFC822 protocols are available in detail at:   ht…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

717 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