Hello,
In the course of my testing the new input transformation feature, I've encountered some trouble that Chirayu is unable to reproduce. We've had a bit of discussion privately about it, but wanted to move discussion back to the mailing list.
Note that running his branch[1] will change your pma__column_info table structure; so you may wish to back it up for testing purposes.
The problem at the moment is the automatic table upgrade feature. What is supposed to happen is that, when logging in, PMA_checkRelationsParam() verifies that the correct table structure exists for pma__column_info. If it doesn't, it attempts to run ./examples/upgrade_column_info_4_3_0+.sql (after substituting the correct database and table names if needed). This is all quite good.
On my system, what happens, however, is that
$GLOBALS['dbi']->tryMultiQuery($query, $GLOBALS['controllink'])
doesn't work. It returns 1 (which I presume is just how print_r represents TRUE), but the query doesn't execute ($query in this case is essentially the contents of the .sql file; several SQL statements with semicolons and newline characters and a few comments). It works properly on Chirayu's system but silently fails on mine.
I'm hoping to get additional testing on the "silent upgrade" feature (or, for that matter, thoughts about the problem). At this point, I'm the only one for whom it fails, which is quite interesting. To test, simply checkout the branch and open phpMyAdmin, then check your pma__column_info table; it should have two new columns at the end (input_*).
Thanks!
Some more detailed information if you really want to read on:
Around line 610, instead of directly testing the result of the tryMultiQuery in the if statement, I assign it to a variable then print_r that variable and get a message about "Commands out of sync; you can't run this command now".
$ipb_test = $GLOBALS['dbi']->tryMultiQuery($query, $GLOBALS['controllink'] ); die("<pre>" . print_r($GLOBALS['controllink']) . "</pre>"); if ($ipb_test !== false ) { return true;
mysqli Object ( [affected_rows] => 0 [client_info] => 5.5.37 [client_version] => 50537 [connect_errno] => 0 [connect_error] => [errno] => 0 [error] => [error_list] => Array ( ) [field_count] => 0 [host_info] => Localhost via UNIX socket [info] => [insert_id] => 0 [server_info] => 5.5.37-0+wheezy1 [server_version] => 50537 [stat] => Commands out of sync; you can't run this command now [sqlstate] => HY000 [protocol_version] => 10 [thread_id] => 6069 [warning_count] => 0 )
I'm not familiar enough with tryMultiQuery to know why [stat] contains this message.
According to [2], it appears as if there is a problem with executing the code because either we haven't used mysql_free_result() or mysql_use_result() or mysql_store_result() since a previous query.
We've looked at mysqli_multi_query() (http://www.php.net/manual/en/mysqli.multi-query.php), which is called by tryMultiQuery() depending on your DBI Extension (mine is mysqli). It says that it returns false when First statement is failed. See the return values section of it.
Note that my mysqli object claims 0 rows were affected but also didn't return false. I expect that the 87 rows in my pma__column_info would have been affected by the first line (ALTER...).
1 - https://github.com/D-storm/phpmyadmin/commits/FR-637 2 - https://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html