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Re: Odd Database Behavior

by tcf22 (Priest)
on Dec 15, 2003 at 17:06 UTC ( #314849=note: print w/replies, xml ) Need Help??

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  1. or download this
    my @row = $Statement->fetchrow_array;
    if ($row[0] > 0)
  2. or download this
      $rv = $sth->rows;
        Returns the number of rows affected by the last row affecting comm
    +and, or -1 if the number of rows is not known or not available.
        For SELECT statements, it is generally not possible to know how ma
    +ny rows will be returned except by fetching them all. Some drivers wi
    +ll return the number of rows the application has fetched so far, but 
    +others may return -1 until all rows have been fetched. So use of the 
    +rows method or $DBI::rows with SELECT statements is not recommended.
        One alternative method to get a row count for a SELECT is to execu
    +te a "SELECT COUNT(*) FROM ..." SQL statement with the same "..." as 
    +your query and then fetch the row count from that.

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