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Fastest text search on a memo field/character field

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    Fastest text search on a memo field/character field

    I need to create a filter to do a text search on both a regular memo filed and a character field. I have searched and there are many choices and methods. What is the fastest? and what would be the syntax to create my filter expression, thank you for your insight. The occurs function works by itself, but I could not get the atc function to work in this example. I just wanted to know the best way to do this.

    My current syntax is:
    dim global vfilter as c
    vfilter= "occurs(var->textsearch,subject)>0 .and.occurs(var->textsearch,memobody)>0"
    topparent:tables:memo.filter_expression= vfilter
    topparent:tables:memo.query()

    #2
    Re: Fastest text search on a memo field/character field

    This is not what you asked exactly - but very fast, for my purposes as a "catch All"
    Instantly create a filter on records with the search text ( in this example "credit") found anywhere in the record, including memo

    vsrch="credit"
    vque = "'"+vsrch+"' $ alltext()"
    qiq=topparent.QueryRun(vque)

    Comment


      #3
      Re: Fastest text search on a memo field/character field

      I will try this tomorrow. There are so many ways to query and I am not very good at the xbasic variety. I am trying to filter a browse by multiple dropdowns and this text search so I will give this method a go. What is the "qiq" in your xbasic?

      Comment


        #4
        Re: Fastest text search on a memo field/character field

        Hi John - its not required and does absolutely nothing. Its an old habit I have of not running a function without a return variable. It helps me to read through the code (says for me Quote Is Queried)

        Users love this way of querying - whatever they remember about a quote or customer name or order number they just type that for anything.
        Wherever it is found they find it or select from a shortlist.
        Query_run() is a newer standard query method - you could place your vfilter variable inside it - the alltext() is the example part.
        Last edited by Ray in Capetown; 06-26-2012, 02:54 AM.

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          #5
          Re: Fastest text search on a memo field/character field

          Originally posted by Ray in Capetown View Post
          Hi John - its not required and does absolutely nothing. Its an old habit I have of not running a function without a return variable. It helps me to read through the code (says for me Quote Is Queried)

          Users love this way of querying - whatever they remember about a quote or customer name or order number they just type that for anything.
          Wherever it is found they find it or select from a shortlist.
          Query_run() is a newer standard query method - you could place your vfilter variable inside it - the alltext() is the example part.
          Sorry, just trying to understand your filter criteria. "credit" $ alltext(). I have never seen this with the dollar sign. I have two fields I am trying search one a memo and the other. Is $ alltext akin to the whole record? Can I use an .and. with other parameters as well? I know when I get to the office tomorrow I will have all these questions. Thanks.

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            #6
            Re: Fastest text search on a memo field/character field

            Originally posted by Ray in Capetown View Post
            Hi John - its not required and does absolutely nothing
            Wronnnggg. I just tested out of interest, it DOES return the NUMBER OF RECORDS in the query. Even though the help doesn't reflect anything.
            Syntax

            <FORM>.QUERY_RUN()

            Comment


              #7
              Re: Fastest text search on a memo field/character field

              Ok I cannot figure out how to add other parameters here. I tried to add ".and. custserv=.t. but it does not work and says there is a type mismatch. How can I do the all text search and add other filter items?
              tbl = table.current()
              vparam = "'"+var->textsearch1+"'" $ alltext().and. tbl.custserv=.t.
              qiq=topparent.QueryRun(vparam)

              Edit(later) ...
              I got it..
              vparam = "'"+textsearch1+"' $ alltext()" + " .and. custserv = .t."

              had to make it a string with a + and "" 's
              Last edited by johngtatp; 06-26-2012, 02:09 PM.

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