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query help please

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    #1

    query help please

    Can you create a query in xbasic to handle variables that have apostrophes in them? My query works fine until the variable has an apostrophe in it. Then the query.create() fails. Any suggestions

    Thanks,
    Daryl Grace
    Tags: None
    #2
    RE: query help please

    Are you saying the variable value contains an apostrophe or that the variable name contains an apostrophe?

    In case 2 I would rename the variable. Case 1 shouldn't cuse a problem.
    There can be only one.

    Comment

      #3
      RE: query help please

      Stan,
      The variable value contains an apostrophe.
      My variable is company_name
      If company_name=Grace's query_create() fails
      If company_name=Graces No problem

      Daryl

      Comment

        #4
        RE: query help please

        Interesting.

        I assume that you are passing the variable in the form of

        :formname:tables:company_name.query_create()

        and company_name is a table in your database.

        I just verified that Alpha will allow you to create a table with an apostrophe. That doesn't mean it is good practice and I would advise against it in order to avoid the sort of problem you are facing.
        There can be only one.

        Comment

          #5
          RE: query help please

          Do a search on "Filter expression is not logical". Ira has an explanation of the use of variables in a query with several methods of employing them.

          Comment

            #6
            RE: query help please

            Thanks John. I misread the

            "If company_name=Grace's query_create() fails"

            to mean

            If company_name=Grace's

            company_name.query_create() fails

            when as you noted the real problem would be with

            query.filter = "company_name = Grace's"

            which would cause query.create() to fail.

            And you pointed to a good discussion of the solution.

            Thanks twice.
            There can be only one.

            Comment

              #7
              RE: query help please

              Thanks to all,
              Problem solved.
              I was making it too complicated.
              query.filter="company_name=var->varname"
              works great!

              query.filter = "company_name = '"+var->company_name+"'"
              did not work if varname contains an apostrophe

              Thanks again,
              Daryl

              Comment

                #8
                RE: query help please

                Daryl

                Did you try

                query.filter = "company_name = "+chr(34)+var->company_name+chr(34)

                This should work. chr(34) is the equivalent of the quote. If var->company name is "Grace's" the actual filter will evaluate to

                company_name = "Grace's"

                when the query runs. Althought the method you used works ok, the expression will evalaute the variable value for each record. If you set the equation as above, the variable will be replaced with the actual varible value. Should work

                Jerry

                Comment

                  #9
                  RE: query help please

                  I had a similar problem and used the following syntax:

                  query.filter = "EVENT=""+var->g_event+"""

                  where EVENT is the field name and g_event is a global variable that gets set from a dialog form.

                  Comment

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