@EXPORT = qw(&db_setocean &db_writer &db_connect $dbh
&db_filename &db_doall &db_onconflict
&dbr_filename &dbr_connect &db_connect_core
+ &dumptab_head &dumptab_row_hashref
&db_chkcommit &db_check_referential_integrity);
%EXPORT_TAGS = ( );
}
}
+#---------- table dump helper ----------
+
+sub dumptab_head ($$$) {
+ my ($fh,$w,$cols) = @_;
+ printf $fh "|%-${w}s", $_ foreach @$cols; print $fh "|\n";
+ print $fh "+",('-'x$w) foreach @$cols; print $fh "+\n";
+}
+
+sub dumptab_row_hashref ($$$$) {
+ my ($fh,$w,$cols,$row) = @_;
+ printf $fh "|%-$w.${w}s",
+ (defined $row->{$_} ? $row->{$_} : 'NULL')
+ foreach @$cols;
+ print $fh "\n";
+}
+
#---------- referential integrity constraints ----------
# SQLite doesn't support foreign key constraints so we do it by steam:
if (!$ecount++) {
print STDERR "REFERENTIAL INTEGRITY ERROR\n";
print STDERR "\n$etxt\n $stmt\n\n";
- printf STDERR "|%-${w}s", $_ foreach @cols; print STDERR "|\n";
- print STDERR "+",('-'x$w) foreach @cols; print STDERR "+\n";
+ dumptab_head(\*STDERR,$w,\@cols);
}
if ($ecount>5) { print STDERR "...\n"; last; }
- printf STDERR "|%-$w.${w}s",
- (defined $row->{$_} ? $row->{$_} : 'NULL')
- foreach @cols;
- print STDERR "\n";
+ dumptab_row_hashref(\*STDERR,$w,\@cols,$row);
}
next unless $ecount;
SELECT * FROM stalls NATURAL LEFT JOIN islands WHERE islandname IS NULL;
SELECT * FROM uploads NATURAL LEFT JOIN islands WHERE islandname IS NULL;
- # Every commod which refers to a commodclass refers to an existing one:
- SELECT * FROM commods WHERE commodclass NOT IN
- (SELECT commodclass FROM commodclasses);
-
- # There are no empty commodclasses:
+ # Every commod must refers to a commodclass and vice versa:
+ SELECT * FROM commods NATURAL LEFT JOIN commodclasses
+ WHERE commodclass IS NULL;
SELECT * FROM commodclasses NATURAL LEFT JOIN commods
WHERE commodname IS NULL;
- # Ordvals which are not zero are unique:
- SELECT ordval,count(*) FROM COMMODS
- WHERE ordval IS NOT NULL AND ordval != 0
+ # Ordvals which are not commodclass ordvals are unique:
+ SELECT ordval,count(*),commodname,commodid,posinclass
+ FROM commods
+ WHERE posinclass > 0
GROUP BY ordval
HAVING count(*) > 1;
+ # For every class, posinclass is dense from 1 to maxposinclass,
+ # apart from the commods for which it is zero.
+ SELECT commodclass,commodclassid,posinclass,count(*)
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass > 0
+ GROUP BY commodclassid,posinclass
+ HAVING count(*) > 1;
+ SELECT commodclass,commodclassid,count(*)
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass > 0
+ GROUP BY commodclassid
+ HAVING count(*) != maxposinclass;
+ SELECT *
+ FROM commods NATURAL JOIN commodclasses
+ WHERE posinclass < 0 OR posinclass > maxposinclass;
+
END
}