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Xbasic Function - SQL syntax

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  • Xbasic Function - SQL syntax

    I am trying to retrieve the Identity value for a record I just inserted into a SQL database. The Xbasic Function is being called from an Action Button on a Dialog box so the e.lastIdentityValue will not work. I have been trying retrieve the value by executing a SQL command but that is where I get stuck. The following is my code:

    dim conn as sql::Connection
    dim rs as sql::ResultSet
    dim sqlcommand as c
    dim recordcount as n

    conn.Open("::Name::cn_xxxxx")

    sqlcommand = "SELECT MAX(pk_id)from tableName"
    conn.Execute(sqlcommand)
    rs = conn.ResultSet
    recordcount=rs.data()

    Usually the column name from the table goes inside the brackets next to rs.data. As the SELECT MAX(pk_id)from tableName does not have any columns specified, it simply errors out.

    Any help or suggestions would be greatly appreciated.

    Thanks,

    Tim Barker

  • #2
    Re: Xbasic Function - SQL syntax

    Does the database have a last id function that can be called to give the last id used?
    Al Buchholz
    Bookwood Systems, LTD
    Weekly QReportBuilder Webinars Thursday 1 pm CST

    Occam's Razor - KISS
    Normalize till it hurts - De-normalize till it works.
    Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
    When we triage a problem it is much easier to read sample systems than to read a mind.
    "Make it as simple as possible, but not simpler."
    Albert Einstein

    http://www.iadn.com/images/media/iadn_member.png

    Comment


    • #3
      Re: Xbasic Function - SQL syntax

      I am running SQL Server 2008 R2 and the column in the table (pk-id) the primary key and is also auto generated when a new record is inserted into the table (IS IDENTITY = Yes). I'm not sure of the SQL command to get this value or how Xbasic can reference the returned value.

      Comment


      • #4
        Re: Xbasic Function - SQL syntax

        Originally posted by tcbarker4 View Post
        I am running SQL Server 2008 R2 and the column in the table (pk-id) the primary key and is also auto generated when a new record is inserted into the table (IS IDENTITY = Yes). I'm not sure of the SQL command to get this value or how Xbasic can reference the returned value.
        google

        sql server return id from insert
        Al Buchholz
        Bookwood Systems, LTD
        Weekly QReportBuilder Webinars Thursday 1 pm CST

        Occam's Razor - KISS
        Normalize till it hurts - De-normalize till it works.
        Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
        When we triage a problem it is much easier to read sample systems than to read a mind.
        "Make it as simple as possible, but not simpler."
        Albert Einstein

        http://www.iadn.com/images/media/iadn_member.png

        Comment


        • #5
          Re: Xbasic Function - SQL syntax

          Originally posted by Al Buchholz View Post
          google

          sql server return id from insert
          It appears scope_identity() will return the last inserted identity. But how is it addressable in Xbasic? Meaning I now have these statements in the Xbasic function:

          dim insertedPKID as n

          conn.Open("::Name::cn_vending_prod")

          sqlcommand = "Insert into CSF_HEADER (created_by) Values ('timbarker')"
          sqlcommand1 = "select insertedPKID = Scope_Identity()"
          conn.Execute(sqlcommand)
          conn.Execute(sqlcommand1)


          The record is inserted into the table but the value of insertedPKID (which should contain the value of the Identity column) is 0 and not the record number of the just inserted record. How can I make the Scope_Identity value accessible in the Xbasic function?

          Comment


          • #6
            Re: Xbasic Function - SQL syntax

            I just found the answer on another post. The code to get the newly inserted record value is as follows:

            sqlcommand = "Insert into CSF_HEADER (created_by) Values ('timbarker')"
            sqlcommand1 = "select Scope_Identity()"
            conn.Execute(sqlcommand)
            conn.Execute(sqlcommand1)
            rs=conn.ResultSet
            insertedPKID = rs.data(1)


            After these commands execute, the insertedPKID variable contains the newly inserted record value.

            Thanks for all your help. You definitely helped by pointing me in the right direction. Much appreciated.

            Comment


            • #7
              Re: Xbasic Function - SQL syntax

              Google is your friend.

              Remember the message board posts are in Google too.
              Al Buchholz
              Bookwood Systems, LTD
              Weekly QReportBuilder Webinars Thursday 1 pm CST

              Occam's Razor - KISS
              Normalize till it hurts - De-normalize till it works.
              Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
              When we triage a problem it is much easier to read sample systems than to read a mind.
              "Make it as simple as possible, but not simpler."
              Albert Einstein

              http://www.iadn.com/images/media/iadn_member.png

              Comment


              • #8
                Re: Xbasic Function - SQL syntax

                Tim - you'll find this useful:

                http://www.downloads.alphasoftware.c...SQLTables.html
                -Steve
                sigpic

                Comment


                • #9
                  Re: Xbasic Function - SQL syntax

                  Hi Steve, is the link down?
                  I'm getting an ERROR: request could not be satisfied

                  Comment


                  • #10
                    Re: Xbasic Function - SQL syntax

                    Originally posted by RobGordon View Post
                    Hi Steve, is the link down?
                    I'm getting an ERROR: request could not be satisfied
                    Works here.
                    Al Buchholz
                    Bookwood Systems, LTD
                    Weekly QReportBuilder Webinars Thursday 1 pm CST

                    Occam's Razor - KISS
                    Normalize till it hurts - De-normalize till it works.
                    Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
                    When we triage a problem it is much easier to read sample systems than to read a mind.
                    "Make it as simple as possible, but not simpler."
                    Albert Einstein

                    http://www.iadn.com/images/media/iadn_member.png

                    Comment


                    • #11
                      Re: Xbasic Function - SQL syntax

                      Tim
                      Thanks for your code.

                      I use the following to return the last used ID; and I think it would work for you.
                      Perhaps with the benefit of only executing a single SQL statement.

                      dim conn as sql::Connection
                      conn.Open("::Name::DatabaseName")
                      conn.PortableSQLEnabled = .t.

                      'store the Operation List ID of the appointment selected
                      dim opListID as N
                      opListID =convert_type(e.datasubmitted.OpListID, "N")

                      'Now find the last appointment entry for that operation
                      dim args as sql::Arguments
                      args.add("opListID", opListID)
                      dim sqlOperationID as c
                      sqlOperationID = "select max(ID) from appointmentlist where operationlistID = :opListID"

                      flag = conn.execute(sqlOperationID, args)

                      dim maxOperationID as n
                      maxOperationID = conn.resultset.data(1)

                      Comment


                      • #12
                        Re: Xbasic Function - SQL syntax

                        Are you using conn to insert? or is this happening on a grid event like onBeforeSQLCommandExecute?

                        Regardless, connection objects have a LastInsertedIdentity() method used like this (handle elses however you want)

                        Code:
                        if conn.open("::name::conn") then
                           if conn.execute("INSERT INTO faketable (fakecol) VALUE (1)") then
                                    dim newpk as N=conn.LastInsertedIdentity()
                                    'insert related records here etc
                           end if
                           conn.close()
                        end if

                        In certain grid events you can use the e.cn object to call the LastInsertedIdentity()

                        Hope this helps someone.
                        Scott Moniz - Computer Programmer/Analyst
                        REA Inc.
                        http://reainc.net
                        (416)-533-3777
                        scott@reainc.net

                        REA INC offers consulting services, programming services, systems design, database design, third party payment gateway integration (CHASE, PAYPAL, AUTHORIZE.NET) and developer support.
                        If you need custom code, or 1-to-1 mentoring in any facet of your database/web application design,
                        contact us to discuss options.

                        Comment


                        • #13
                          Create unique invoice number in sql

                          Hi Tim,

                          Check my article as: Create Unique Invoice Number in SQL. It will discuss how to get the Identity record for MS SQL 2014 and below. In addition, Do not use the MAX() command to get the highest number, since it may be the wrong number and see details in that article I just mentioned.

                          Regards,

                          Doron
                          The Farber Consulting Group, Inc.

                          Main Web Site: http://www.dFarber.com
                          MS SQL Blog: http://www.dfarber.com/computer-consulting-blog.aspx
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                          Last edited by DoronF; 03-23-2015, 06:19 PM.

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