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From:Jim Wallace Date:August 12 2007 1:29am
Subject:RE: Inserting with a column that uses auto_increment
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I use auto_increment often.  The trick is to not include that column in
the sql_create_* macro.  This may mean you have > 1 macro for the same
table, one for insert w/o that column, and one for retrieval with that
column.  I often have > 1 macro for the same table depending on how I'm
using it.

HTH

-----Original Message-----
From: Graham Reitz [mailto:grahamreitz@stripped] 
Sent: Saturday, August 11, 2007 2:27 AM
To: plusplus@stripped
Subject: Inserting with a column that uses auto_increment

How do you prevent an insert as shown in the code below from putting
"bogus" data in an auto_increment field?

It seems like the billing_id field, in the code below, inserts a number
based on the un-initialized value of client_id, instead of letting the
database auto_increment the value.  What's a good method to deal with
this, that allows the database to auto_increment a database field?

Thanks,
Graham

/************ CODE ************/

#include <mysql++.h>
#include <custom.h>

using namespace mysqlpp;

sql_create_2(clients, 1, 2,
              unsigned int,     client_id, // auto_incremented field
              unsigned int,     billing_id)

void populate_client_info(clients& client_info)
{
     client_info.billing_id = 1;
}

int main (int argc, char* const argv[])
{
     Connection connection("db_name","ip_address","user",
                           "password",3306, false);

     Query client_query = connection.query();

     clients a_client;
     populate_client_info(a_client);

     client_query.insert(a_client);
     client_query.execute();

     return 0;
}

Thread
Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz9 Aug
  • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz9 Aug
    • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz9 Aug
      • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz9 Aug
        • Re: Query insert() Seg Faulting using SSQLS, not sure why...Warren Young9 Aug
          • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz11 Aug
          • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz11 Aug
            • Re: Query insert() Seg Faulting using SSQLS, not sure why...Graham Reitz11 Aug
              • Inserting with a column that uses auto_incrementGraham Reitz11 Aug
                • RE: Inserting with a column that uses auto_incrementJim Wallace12 Aug
                  • Re: Inserting with a column that uses auto_incrementGraham Reitz12 Aug
                  • Re: Inserting with a column that uses auto_incrementGraham Reitz12 Aug
                    • RE: Inserting with a column that uses auto_incrementJim Wallace12 Aug
                      • Re: Inserting with a column that uses auto_incrementGraham Reitz12 Aug
                      • Re: Inserting with a column that uses auto_incrementWarren Young14 Aug
              • Re: Query insert() Seg Faulting using SSQLS, not sure why...Warren Young28 Dec
Re: Inserting with a column that uses auto_incrementGraham Reitz14 Aug
  • RE: Inserting with a column that uses auto_incrementJoel Fielder14 Aug
    • Re: Inserting with a column that uses auto_incrementGraham Reitz14 Aug
  • Re: Inserting with a column that uses auto_incrementWarren Young15 Aug
    • Re: Inserting with a column that uses auto_incrementGraham Reitz15 Aug
      • Re: Inserting with a column that uses auto_incrementWarren Young16 Aug
        • Re: Inserting with a column that uses auto_incrementGraham Reitz17 Aug
    • Re: Inserting with a column that uses auto_incrementGraham Reitz15 Aug