Chapter 7. Delete a row
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## Chapter 7. Delete a row

Also not a great task. Goto the row you wish to delete and call hk_datasource::delete_actualrow()

Example 7.1. Delete a row

    #define HAVE_SSTREAM 1
    #include <hk_classes.h>
    #include <iostream>
    int main()
    {
       hk_drivermanager* mydrivermanager = new hk_drivermanager();
       if (mydrivermanager==NULL) {cout <<"error creating mydrivermanager"<<endl;exit(1);}
       hk_connection* myconnection = mydrivermanager->new_connection("mysql");
       if (myconnection==NULL) {cout <<"error creating myconnection"<<endl;exit(1);}
       myconnection->set_host("localhost");
       myconnection->set_user("root");
       myconnection->set_password("mypasswd");
       myconnection->connect();

       hk_database* mydatabase=myconnection->new_database("exampledb");
       if (mydatabase==NULL) {cout <<"error creating mydatabase"<<endl;exit(1);}
       hk_datasource* mydatasource= mydatabase->new_table("authors");
       if (mydatasource==NULL) {cout <<"error creating mydatasource"<<endl;exit(1);}
       mydatasource->enable();

       hk_column* mycolumn = mydatasource->column_by_name("name");
       if (mycolumn==NULL) {cout <<"error getting column"<<endl;exit(1);}

       mydatasource->goto_row(3);
       mydatasource->delete_actualrow();

       delete mydrivermanager;
    }

When you try this out you will be asked if you really want to delete the data. If this question is disturbing you switch it off. Use the function hk_class::set_showpedantic(false); for this.

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Chapter 6. Add a row | Home | Chapter 8. Searching a column