Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 178
  • Last Modified:

Sql Statement

HI,

I am having a problem with a sql statement.
What i am trying to do is, a search in a table on a paradox database. The field is of type Long integer.
I am doing a search criteria where the field Error is equal to nothing, eg: the field is blank, has no data what so ever in it.
This is my statement :
SqlReadNoErrors = "SELECT * FROM Entry_de where Error = " & Null & ""
When i run the code it gives a syntax error, operator missing...

What could be wrong?

Thanks!
0
mscala
Asked:
mscala
  • 5
  • 2
  • 2
1 Solution
 
RuchiCommented:
change
SqlReadNoErrors = "SELECT * FROM Entry_de where Error = " & Null & ""

to

SqlReadNoErrors = "SELECT * FROM Entry_de where Error = " & Null & "
0
 
pinshahCommented:
try doing this

"where Error  = Null" instead of

"where Error = " & Null & "" as the tool or language in which u r making ur application can have different meaning for Null then the underline database

if u concatenate the Null it will be transformed to a value which ur application knows and it may not be compatible with the database.


0
 
RuchiCommented:
try this one.
SqlReadNoErrors = "SELECT * FROM Entry_de where Error Is Null
0
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!

 
mscalaAuthor Commented:
Ruchi - firstly u are leaving out one of the " which it needs in.

pinshah - i don't necessarliy have to use Null, it was just something i was trying, for i am not looking for a value of null, i am searching for a blank value...
0
 
RuchiCommented:
SqlReadNoErrors = "SELECT * FROM Entry_de where Error = ''

This code and The above I posted are the same thing.
0
 
RuchiCommented:
I miss the enclosing " on the same line.

SqlReadNoErrors = "SELECT * FROM Entry_de where Error = ''"

SqlReadNoErrors = "SELECT * FROM Entry_de where Error Is Null"

0
 
pinshahCommented:
I think '' is not same as is Null or Null '' is a empty string and Null has a different value which applies not only for strings but also for other datatypes. If error is a number it will give a type mismatch ( or related database errror)
0
 
mscalaAuthor Commented:
Thanks Ruchi, the Is Null worked.
Thanks very much
0
 
RuchiCommented:
Mscala, You are welcome! I'm glad that I could be of any help to you. :-)
0

Featured Post

[Webinar On Demand] Database Backup and Recovery

Does your company store data on premises, off site, in the cloud, or a combination of these? If you answered “yes”, you need a data backup recovery plan that fits each and every platform. Watch now as as Percona teaches us how to build agile data backup recovery plan.

  • 5
  • 2
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now