When display " -1 " in rowsAffected , whats mean?

[juliorosales.ti]

Hi, please help me .

When display " -1 " in rowsAffected , whats mean?

Let>SQL=DELETE * FROM CUSTOMERS
DBExec>dbH,SQL,rowsAffected

rowsAffected = 1 ok
rowsAffected = 0 ok
rowsAffected = -1 ????

Thanks by answer

[Marcus Tettmar]

Probably means it failed. But it's going to depend on what kind of database you are using and what driver you are using. DBExec and DBQuery are simply dumb conduits. All they do is pass the sql string on to your driver and return the result that the driver returns to it. So the answer lies in the documentation of your database or the connection driver.