How do I create a table if it doesnt exist?

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I'm working on a c# project and now I need to create a table in sql,but I just need to create it if it doesnt exist.

What I have tried:

I did a search on google and found this, but for some reason isnt working, this ignores the

if

and just creates the table and if the table already exist it skips all my code, but I get no error

C#

conn.Open();
SqlCommand command = new SqlCommand("IF OBJECT_ID('UXMenu', 'U') IS NULL CREATE TABLE UXMenu(TransDocument char(10), TransSerial char(8), TransDocNumber float, PartyName char(75), PartyLocalityID char(5), TotalAmount char (25), ShipToPostalCode char(50), Estado int);", conn);
command.ExecuteNonQuery();
MessageBox.Show("tabela criada");
conn.Close();

Posted 24-Aug-17 1:33am

Member 13356973

Updated 24-Aug-17 4:14am

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OriginalGriff · Accepted Answer · 2017-08-24T01:57:00

Solution 1

Um. You did notice that your command checks for one table, and if it doesn't exist creates a table with a totally different name?

SQL

IF OBJECT_ID('UXFaturas', 'U') IS NULL CREATE TABLE UXMenu(...);

And if it is corrected, then if it finds the table or not there is nothing to error. You could add an error if it does exist:

SQL

IF OBJECT_ID('UXMenu', 'U') IS NULL 
   CREATE TABLE UXMenu(TransDocument char(10), TransSerial char(8), TransDocNumber float, PartyName char(75), PartyLocalityID char(5), TotalAmount char (25), ShipToPostalCode char(50), Estado int);
ELSE 
   THROW 50001, 'Table Exists', 1;

Posted 24-Aug-17 1:57am

OriginalGriff

Comments

Member 13356973 24-Aug-17 9:59am

I changed the table name and forgot to change that, thanks for the help

Member 13356973 24-Aug-17 10:09am

It still skips my code if the table exists

OriginalGriff 24-Aug-17 10:26am

How have you checked?

Member 13356973 24-Aug-17 10:27am

I run the program and added a messagebox when it goes for the create table, but i've fixed it, thanks for the help

OriginalGriff 24-Aug-17 10:34am

Don't use MessageBox to follow what your code is doing - use the debugger, it gives you a huge amount more help and control.

Member 13356973 24-Aug-17 10:35am

ok sir, thanks for the suggestion, i'll keep that in mind for my future projects