[SQL Server]Conversion failed when converting the varchar value 'Boston' to data type int."

ssoffel

Can someone help explain why I keep getting this error. I have a table with 5 columns and I would like to click on any box and retrieve the row.

Teams Wins Loses Ties Pts
Boston 10 10 1 20
NJ 5 5 1 10
Clev 1 10 0 2

For some reason whenever I click on the Teams column I get the error :
SQL Server]Conversion failed when converting the varchar value 'Boston' to data type int."

However if I change the query to
qry.prepare("SELECT * FROM [dbo].[tbl_Record] WHERE Team='"+value+"'); it works and doesn't try to convert teams to int.

void TableView::on_tableView_doubleClicked(const QModelIndex &index)
{
QString value = ui->tableView->model()->data(index).toString();

 QSqlQuery qry;
 qry.prepare("SELECT * FROM [dbo].[tbl_Record] WHERE Team='"+value+"' or Wins='"+value+"' or Loses='"+value+"' ");

 if(qry.exec())
 {
    while(qry.next())
    {
         team = qry.value(0).toString();
         wins = qry.value(1).toString();
         loses = qry.value(2).toString();
         ties = qry.value(3).toString();
         pts = qry.value(4).toString();

    }

 }

SGaist

Hi,

Can you show the code that you use that triggers that warning ?

ssoffel

@ssoffel said in [SQL Server]Conversion failed when converting the varchar value 'Boston' to data type int.":

qry.prepare("SELECT * FROM [dbo].[tbl_Record] WHERE Team='"+value+"' or Wins='"+value+"' or Loses='"+value+"' ");

qry.prepare("SELECT * FROM [dbo].[tbl_Record] WHERE Team='"+value+"' or Wins='"+value+"' or Loses='"+value+"' ");

The error occurs WHERE Team='"+value+"'.

SGaist

You should rather use a prepared query, it will be cleaner.