?
Solved

T-SQL Drop Tables

Posted on 2014-04-06
4
Medium Priority
?
470 Views
Last Modified: 2014-04-07
I’m trying to write T-SQL commands that will drop three tables in a database. I’m running SQL Server 2008 Release 2. After executing each of the commands, I received a “Command(s) completed successfully.” message. However, none of the tables were dropped. Screenshots of the database diagram and tables are attached.

What am I doing wrong?

T-SQL Commands
IF OBJECT_ID('dbo.db_1', 'U') IS NOT NULL
DROP TABLE dbo.tblDurations

IF OBJECT_ID('dbo.db_1', 'U') IS NOT NULL
DROP TABLE dbo.tblObjects

IF OBJECT_ID('dbo.db_1', 'U') IS NOT NULL
DROP TABLE dbo.tblTimes

Open in new window


DATABASE DIAGRAM
Database Diagram
TABLES
Durations TableObjects TableTimes Table
0
Comment
Question by:Mark01
[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
4 Comments
 
LVL 29

Accepted Solution

by:
becraig earned 2000 total points
ID: 39982005
IF OBJECT_ID('dbo.tblDurations', 'U') IS NOT NULL
DROP TABLE dbo.tblDurations

IF OBJECT_ID('dbo.tblObjects', 'U') IS NOT NULL
DROP TABLE dbo.tblObjects

IF OBJECT_ID('dbo.tblTimes', 'U') IS NOT NULL
DROP TABLE dbo.tblTimes
                                  

Open in new window



I think the above might be what you are after ?
If the actual table exists then drop the table.
0
 
LVL 49

Expert Comment

by:PortletPaul
ID: 39982007
why are you using this?

IF OBJECT_ID('dbo.db_1', 'U') IS NOT NULL

what relevance does dbo.db_1 have to [tblDurations] or [tblObjects] or [tblTimes]?

look back over that code and change the IF statements to be relevant for each table
0
 
LVL 11

Expert Comment

by:HuaMinChen
ID: 39982010
Try to remove the 3 If statements, and only put the 3 drop lines instead.
0
 

Author Comment

by:Mark01
ID: 39984218
I executed the command shown below and it returned the error shown below. becraig's commands worked.

COMMAND:
DROP TABLE dbo.tblDurations


ERROR:
Msg 3726, Level 16, State 1, Line 1
Could not drop object 'dbo.tblDurations' because it is referenced by a FOREIGN KEY constraint.

Thank you, becraig, HuaMinChen and PortletPaul.
0

Featured Post

The Orion Papers

Are you interested in becoming an AWS Certified Solutions Architect?

Discover a new interactive way of training for the exam.

Question has a verified solution.

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

In this series, we will discuss common questions received as a database Solutions Engineer at Percona. In this role, we speak with a wide array of MySQL and MongoDB users responsible for both extremely large and complex environments to smaller singl…
Backups and Disaster RecoveryIn this post, we’ll look at strategies for backups and disaster recovery.
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…

719 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