Browse DevX
Sign up for e-mail newsletters from DevX

Tip of the Day
Language: Visual Basic
Expertise: Beginner
Oct 1, 1996



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Embedding Variable Values

I am writing a program that searches a database and i am trying to use a variable for the WHERE clause. Can you Help me? here is an example:
Data1.RecordSource = "Select * from Movies where Movie = FindMovies"
FindMovies is my variable.

Try this:

Data1.RecordSource = "Select * from Movies where Movie = '" & FindMovies & "'"
The variable value has to be in quotes when it gets to the database engine. Bear in mind that this will only work if there are no apostrophe's nor pipe symbols (just with the Jet engine), in your FindMovies variable. You should parse through FindMovies and replace all occurences of an apostrophe with two apostrophes, e.g. Mr. Holland's Opus would be passed to the SQL Server as Mr. Holland''s Opus. Any occurance of the pipe symbol should be replaced with a chr$(124). This would mean running your FindMovie variable through a routine that replaces one substring with another once each for the apostrophe and the pipe symbol. Lastly, it sometimes helps to put your entire query into one string before passing it. Something like:
Dim sqlQuery As String

sqlQuery =  "Select * from Movies where Movie = '" & FindMovies & "'"
Data1.RecordSource = squQuery
DevX Pro
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date