Jump to content

MySQL Help handling empty sets


Recommended Posts

Hi all,

I have a program that uses the MySQL UDF (thanks cdkid!). If I query the database I want to know how to handle a return that is an empty set.

for example, I have a query where I search the table 'apps' for a row that contains 20 in the column 'appno'

$var = _query($db, "SELECT * FROM apps WHERE appno = 20)

If no results are found, how do I handle this?

I have tried something like this, but it generates an error.

If $var.Fields("appno").value = "" Then

MsgBox(0,"Test","no results found!")

Else

Msgbox(0,"Congrats", "Result = " & $var.Fields("appno").value)

EndIf

Thanks for any help,

Mike.

Link to comment
Share on other sites

I did this and it worked for me:

With $var

If .EOF Then

(your code)

Endif

EndWith

Hi all,

I have a program that uses the MySQL UDF (thanks cdkid!). If I query the database I want to know how to handle a return that is an empty set.

for example, I have a query where I search the table 'apps' for a row that contains 20 in the column 'appno'

$var = _query($db, "SELECT * FROM apps WHERE appno = 20)

If no results are found, how do I handle this?

I have tried something like this, but it generates an error.

If $var.Fields("appno").value = "" Then

MsgBox(0,"Test","no results found!")

Else

Msgbox(0,"Congrats", "Result = " & $var.Fields("appno").value)

EndIf

Thanks for any help,

Mike.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...