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From:tim Date:August 20 2007 5:00pm
Subject:bk commit into 5.0 tree (tsmith:1.2513) BUG#27694
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Below is the list of changes that have just been committed into a local
5.0 repository of tsmith. When tsmith does a push these changes will
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ChangeSet@stripped, 2007-08-20 11:00:51-06:00, tsmith@stripped +1 -0
  Bug #27694: mysqlhotcopy & p5-DBD-mysql51-4.003
  
  Use "SHOW TABLES FROM `db`" instead of $dbh->tables() in the
  get_list_of_tables() routine.
  
  The symptom is that, when used with recent versions of DBD::mysql,
  mysqlhotcopy uses a double-qualified table name, for example:
  
  Invalid db.table name 'test.test`.`x' at /usr/bin/mysqlhotcopy line 855.
  
  This is caused by a change in DBD::mysql.  See this diff:
  
  http://svn.perl.org/viewcvs/modules/DBD-mysql/trunk/lib/DBD/mysql.pm?r1=9183&r2=9188
  
  Basically, older DBD::mysql implemented a limited ->table_info method;
  now the full method is implemented, and as a result DBI's ->tables()
  method has access to the schema value, so it uses it.

  scripts/mysqlhotcopy.sh@stripped, 2007-08-20 11:00:49-06:00, tsmith@stripped +7 -23
    Use "SHOW TABLES FROM `db`" instead of $dbh->tables() in
    get_list_of_tables().  DBI's ->tables() method calls
    "SHOW TABLES" under the hood, and then quotes the
    names and (depending on DBD::mysql version) adds the schema
    name, too.  mysqlhotcopy doesn't want the schema name
    or the quotes, so it's all around better to just call
    "SHOW TABLES" itself.

diff -Nrup a/scripts/mysqlhotcopy.sh b/scripts/mysqlhotcopy.sh
--- a/scripts/mysqlhotcopy.sh	2006-10-03 01:05:31 -06:00
+++ b/scripts/mysqlhotcopy.sh	2007-08-20 11:00:49 -06:00
@@ -821,30 +821,14 @@ sub get_raid_dirs {
 sub get_list_of_tables {
     my ( $db ) = @_;
 
-    # "use database" cannot cope with database names containing spaces
-    # so create a new connection 
+    my $tables =
+        eval {
+            $dbh->selectall_arrayref('SHOW TABLES FROM ' .
+                                     $dbh->quote_identifier($db))
+        } || [];
+    warn "Unable to retrieve list of tables in $db: $@" if $@;
 
-    my $dbh = DBI->connect("dbi:mysql:${db}${dsn};mysql_read_default_group=mysqlhotcopy",
-			    $opt{user}, $opt{password},
-    {
-	RaiseError => 1,
-	PrintError => 0,
-	AutoCommit => 1,
-    });
-
-    my @dbh_tables = eval { $dbh->tables() };
-
-    ## Remove quotes around table names
-    my $quote = $dbh->get_info(29); # SQL_IDENTIFIER_QUOTE_CHAR
-    if ($quote) {
-      foreach (@dbh_tables) {
-        s/^$quote(.*)$quote$/$1/;
-        s/$quote$quote/$quote/g;
-      }
-    }
-
-    $dbh->disconnect();
-    return @dbh_tables;
+    return (map { $_->[0] } @$tables);
 }
 
 sub quote_names {
Thread
bk commit into 5.0 tree (tsmith:1.2513) BUG#27694tim20 Aug