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PT-1853 Added disable fk checks in MySQL

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This commit is contained in:
Carlos
2020-06-30 20:09:39 -03:00
parent 2e62d07ba0
commit 9f2b72e0df
3 changed files with 26 additions and 24 deletions
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22
bin/pt-online-schema-change
View File

@@ -8594,7 +8594,7 @@ sub main {
# ########################################################################
my $set_on_connect = sub {
my ($dbh) = @_;
if ($o->get('check-foreign-keys')) {
if (!$o->get('check-foreign-keys')) {
my $sql = "SET foreign_key_checks=0";
PTDEBUG && _d($sql);
print $sql, "\n" if $o->get('print');
@@ -9112,10 +9112,10 @@ sub main {
# TODO: Fix self referencing foreign keys handling.
# See: https://jira.percona.com/browse/PT-1802
# https://jira.percona.com/browse/PT-1853
if (has_self_ref_fks($orig_tbl->{db}, $orig_tbl->{tbl}, $child_tables) and $o->get('check-foreign-keys')) {
print "The table has self referencing foreign keys and that might lead to errors.\n";
if (_has_self_ref_fks($orig_tbl->{db}, $orig_tbl->{tbl}, $child_tables) && $o->get('check-foreign-keys')) {
print "The table has self-referencing foreign keys and that might lead to errors.\n";
print "Use --no-check-foreign-keys to disable this check.\n";
return 1
return 1;
}
if ( $alter_fk_method ) {
@@ -10411,18 +10411,18 @@ sub check_alter {
return;
}
sub has_self_ref_fks {
sub _has_self_ref_fks {
my ($orig_db, $orig_table, $child_tables) = @_;
my $db_tbl = sprintf("`%s`.`%s`", $orig_db, $orig_table);
my $db_tbl = sprintf('`%s`.`%s`', $orig_db, $orig_table);
foreach my $child_table ( @$child_tables ) {
if ($db_tbl eq $child_table->{name}) {
if ("$db_tbl" eq "$child_table->{name}") {
return 1;
}
};
}
return undef;
return 0;
}
# This function tries to detect if the --alter param is adding unique indexes.
@@ -12201,9 +12201,9 @@ L<"--print"> and verify that the triggers are correct.
default: yes
Check for self referencing foreing keys. Currently self referencing FKs are
Check for self-referencing foreing keys. Currently self referencing FKs are
not fully supported so to prevent errors, this program wont't run if the table
has self referen foreign keys. Use this parameter to disable self referencing
has self-referencing foreign keys. Use this parameter to disable self-referencing
FK checks.
=item --check-interval

12
t/pt-online-schema-change/rename_self_ref_fk_constraints.t
View File

@@ -64,9 +64,9 @@ my $constraints = $master_dbh->selectall_arrayref($query);
is_deeply(
$constraints,
[
['person', '_fk_testId'],
['test_table', '_fk_person'],
['test_table', '__fk_refId'],
['person', 'fk_testId'],
['test_table', 'fk_person'],
['test_table', 'fk_refId'],
],
"First run adds or removes underscore from constraint names, accordingly"
);
@@ -94,9 +94,9 @@ $constraints = $master_dbh->selectall_arrayref($query);
is_deeply(
$constraints,
[
['person', '__fk_testId'],
['test_table', '_fk_refId'],
['test_table', '__fk_person'],
['person', 'fk_testId'],
['test_table', 'fk_person'],
['test_table', 'fk_refId'],
],
"Second run self-referencing will be one due to rebuild_constraints"
);

16
t/pt-online-schema-change/rename_self_ref_fk_constraints_pt_1802.t
View File

@@ -60,13 +60,14 @@ my $query = <<"END";
ORDER BY TABLE_NAME, CONSTRAINT_NAME
END
my $constraints = $master_dbh->selectall_arrayref($query);
my @constraints = sort { @$a[0].@$a[1] cmp @$b[0].@$b[1] } @$constraints;
is_deeply(
$constraints,
[
['person', '_fk_testId'],
['test_table', '_fk_person'],
['test_table', '__fk_refId'],
['person', 'fk_testId'],
['test_table', 'fk_person'],
['test_table', 'fk_refId'],
],
"First run adds or removes underscore from constraint names, accordingly"
);
@@ -90,13 +91,14 @@ ORDER BY TABLE_NAME, CONSTRAINT_NAME
END
$constraints = $master_dbh->selectall_arrayref($query);
@constraints = sort { @$a[0].@$a[1] cmp @$b[0].@$b[1] } @$constraints;
is_deeply(
$constraints,
\@constraints,
[
['person', '__fk_testId'],
['test_table', '_fk_refId'],
['test_table', '__fk_person'],
['person', 'fk_testId'],
['test_table', 'fk_person'],
['test_table', 'fk_refId'],
],
"Second run self-referencing will be one due to rebuild_constraints"
);