diff options
| -rw-r--r-- | mysql-test/r/innodb_mysql.result | 145 | ||||
| -rw-r--r-- | mysql-test/t/innodb_mysql.test | 147 | ||||
| -rw-r--r-- | sql/sql_delete.cc | 42 |
3 files changed, 324 insertions, 10 deletions
diff --git a/mysql-test/r/innodb_mysql.result b/mysql-test/r/innodb_mysql.result index 6fcc9415d12..55dc0d51142 100644 --- a/mysql-test/r/innodb_mysql.result +++ b/mysql-test/r/innodb_mysql.result @@ -1846,4 +1846,149 @@ id TRUNCATE TABLE t2; DROP TABLE t2; DROP TABLE t1; +# +# Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0 +# +CREATE TABLE t1 ( +id INT UNSIGNED NOT NULL AUTO_INCREMENT, +PRIMARY KEY (id) +) ENGINE=InnoDB; +CREATE TABLE t2 ( +id INT UNSIGNED NOT NULL AUTO_INCREMENT, +aid INT UNSIGNED NOT NULL, +PRIMARY KEY (id), +FOREIGN KEY (aid) REFERENCES t1 (id) +) ENGINE=InnoDB; +CREATE TABLE t3 ( +bid INT UNSIGNED NOT NULL, +FOREIGN KEY (bid) REFERENCES t2 (id) +) ENGINE=InnoDB; +CREATE TABLE t4 ( +a INT +) ENGINE=InnoDB; +CREATE TABLE t5 ( +a INT +) ENGINE=InnoDB; +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id, aid) VALUES (1, 1),(2,1),(3,1),(4,1); +INSERT INTO t3 (bid) VALUES (1); +INSERT INTO t4 VALUES (1),(2),(3),(4),(5); +INSERT INTO t5 VALUES (1); +DELETE t5 FROM t4 LEFT JOIN t5 ON t4.a= t5.a; +DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t3`, CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`bid`) REFERENCES `t2` (`id`)) +DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; +ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t3`, CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`bid`) REFERENCES `t2` (`id`)) +DELETE IGNORE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; +DROP TABLE t3; +DROP TABLE t2; +DROP TABLE t1; +DROP TABLES t4,t5; +# Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0 +# Testing for any side effects of IGNORE on AFTER DELETE triggers used with +# transactional tables. +# +CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB; +CREATE TABLE t2 (a VARCHAR(100)) ENGINE=InnoDB; +CREATE TABLE t3 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB; +CREATE TABLE t4 (i INT NOT NULL PRIMARY KEY, t1i INT, +FOREIGN KEY (t1i) REFERENCES t1(i)) +ENGINE=InnoDB; +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN +SET @b:='EXECUTED TRIGGER'; +INSERT INTO t2 VALUES (@b); +SET @a:= error_happens_here; +END|| +SET @b:=""; +SET @a:=""; +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 SELECT * FROM t1; +** An error in a trigger causes rollback of the statement. +DELETE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +ERROR 42S22: Unknown column 'error_happens_here' in 'field list' +SELECT @a,@b; +@a @b + EXECUTED TRIGGER +SELECT * FROM t2; +a +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +i i +1 1 +2 2 +3 3 +4 4 +** Same happens with the IGNORE option +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +ERROR 42S22: Unknown column 'error_happens_here' in 'field list' +SELECT * FROM t2; +a +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +i i +1 1 +2 2 +3 3 +4 4 +** +** The following is an attempt to demonstrate +** error handling inside a row iteration. +** +DROP TRIGGER trg; +TRUNCATE TABLE t1; +TRUNCATE TABLE t2; +TRUNCATE TABLE t3; +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 VALUES (1),(2),(3),(4); +INSERT INTO t4 VALUES (3,3),(4,4); +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN +SET @b:= CONCAT('EXECUTED TRIGGER FOR ROW ',CAST(OLD.i AS CHAR)); +INSERT INTO t2 VALUES (@b); +END|| +** DELETE is prevented by foreign key constrains but errors are silenced. +** The AFTER trigger isn't fired. +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +** Tables are modified by best effort: +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +i i +3 3 +4 4 +** The AFTER trigger was only executed on successful rows: +SELECT * FROM t2; +a +EXECUTED TRIGGER FOR ROW 1 +EXECUTED TRIGGER FOR ROW 2 +DROP TRIGGER trg; +** +** Induce an error midway through an AFTER-trigger +** +TRUNCATE TABLE t4; +TRUNCATE TABLE t1; +TRUNCATE TABLE t3; +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 VALUES (1),(2),(3),(4); +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN +SET @a:= @a+1; +IF @a > 2 THEN +INSERT INTO t4 VALUES (5,5); +END IF; +END|| +SET @a:=0; +** Errors in the trigger causes the statement to abort. +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test`.`t4`, CONSTRAINT `t4_ibfk_1` FOREIGN KEY (`t1i`) REFERENCES `t1` (`i`)) +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +i i +1 1 +2 2 +3 3 +4 4 +SELECT * FROM t4; +i t1i +DROP TRIGGER trg; +DROP TABLE t4; +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t3; End of 5.1 tests diff --git a/mysql-test/t/innodb_mysql.test b/mysql-test/t/innodb_mysql.test index 4a6249eeccd..ad9e726f5b4 100644 --- a/mysql-test/t/innodb_mysql.test +++ b/mysql-test/t/innodb_mysql.test @@ -185,4 +185,151 @@ TRUNCATE TABLE t2; DROP TABLE t2; DROP TABLE t1; +--echo # +--echo # Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0 +--echo # +CREATE TABLE t1 ( + id INT UNSIGNED NOT NULL AUTO_INCREMENT, + PRIMARY KEY (id) +) ENGINE=InnoDB; + +CREATE TABLE t2 ( + id INT UNSIGNED NOT NULL AUTO_INCREMENT, + aid INT UNSIGNED NOT NULL, + PRIMARY KEY (id), + FOREIGN KEY (aid) REFERENCES t1 (id) +) ENGINE=InnoDB; + +CREATE TABLE t3 ( + bid INT UNSIGNED NOT NULL, + FOREIGN KEY (bid) REFERENCES t2 (id) +) ENGINE=InnoDB; + +CREATE TABLE t4 ( + a INT +) ENGINE=InnoDB; + +CREATE TABLE t5 ( + a INT +) ENGINE=InnoDB; + +INSERT INTO t1 (id) VALUES (1); +INSERT INTO t2 (id, aid) VALUES (1, 1),(2,1),(3,1),(4,1); +INSERT INTO t3 (bid) VALUES (1); + +INSERT INTO t4 VALUES (1),(2),(3),(4),(5); +INSERT INTO t5 VALUES (1); + +DELETE t5 FROM t4 LEFT JOIN t5 ON t4.a= t5.a; + +--error ER_ROW_IS_REFERENCED_2 +DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; +--error ER_ROW_IS_REFERENCED_2 +DELETE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; + +DELETE IGNORE t2, t1 FROM t2 INNER JOIN t1 ON (t2.aid = t1.id) WHERE t2.id = 1; + +DROP TABLE t3; +DROP TABLE t2; +DROP TABLE t1; +DROP TABLES t4,t5; + +--echo # Bug#40127 Multiple table DELETE IGNORE hangs on foreign key constraint violation on 5.0 +--echo # Testing for any side effects of IGNORE on AFTER DELETE triggers used with +--echo # transactional tables. +--echo # +CREATE TABLE t1 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB; +CREATE TABLE t2 (a VARCHAR(100)) ENGINE=InnoDB; +CREATE TABLE t3 (i INT NOT NULL PRIMARY KEY) ENGINE=InnoDB; +CREATE TABLE t4 (i INT NOT NULL PRIMARY KEY, t1i INT, + FOREIGN KEY (t1i) REFERENCES t1(i)) + ENGINE=InnoDB; +delimiter ||; +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN + SET @b:='EXECUTED TRIGGER'; + INSERT INTO t2 VALUES (@b); + SET @a:= error_happens_here; +END|| +delimiter ;|| + +SET @b:=""; +SET @a:=""; +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 SELECT * FROM t1; +--echo ** An error in a trigger causes rollback of the statement. +--error ER_BAD_FIELD_ERROR +DELETE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +SELECT @a,@b; +SELECT * FROM t2; +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; + +--echo ** Same happens with the IGNORE option +--error ER_BAD_FIELD_ERROR +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +SELECT * FROM t2; +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; + +--echo ** +--echo ** The following is an attempt to demonstrate +--echo ** error handling inside a row iteration. +--echo ** +DROP TRIGGER trg; +TRUNCATE TABLE t1; +TRUNCATE TABLE t2; +TRUNCATE TABLE t3; + +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 VALUES (1),(2),(3),(4); +INSERT INTO t4 VALUES (3,3),(4,4); + +delimiter ||; +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN + SET @b:= CONCAT('EXECUTED TRIGGER FOR ROW ',CAST(OLD.i AS CHAR)); + INSERT INTO t2 VALUES (@b); +END|| +delimiter ;|| + +--echo ** DELETE is prevented by foreign key constrains but errors are silenced. +--echo ** The AFTER trigger isn't fired. +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +--echo ** Tables are modified by best effort: +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +--echo ** The AFTER trigger was only executed on successful rows: +SELECT * FROM t2; + +DROP TRIGGER trg; + +--echo ** +--echo ** Induce an error midway through an AFTER-trigger +--echo ** +TRUNCATE TABLE t4; +TRUNCATE TABLE t1; +TRUNCATE TABLE t3; +INSERT INTO t1 VALUES (1),(2),(3),(4); +INSERT INTO t3 VALUES (1),(2),(3),(4); +delimiter ||; +CREATE TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW +BEGIN + SET @a:= @a+1; + IF @a > 2 THEN + INSERT INTO t4 VALUES (5,5); + END IF; +END|| +delimiter ;|| + +SET @a:=0; +--echo ** Errors in the trigger causes the statement to abort. +--error ER_NO_REFERENCED_ROW_2 +DELETE IGNORE t1 FROM t3 LEFT JOIN t1 ON t1.i=t3.i; +SELECT * FROM t1 LEFT JOIN t3 ON t1.i=t3.i; +SELECT * FROM t4; + +DROP TRIGGER trg; +DROP TABLE t4; +DROP TABLE t1; +DROP TABLE t2; +DROP TABLE t3; + --echo End of 5.1 tests diff --git a/sql/sql_delete.cc b/sql/sql_delete.cc index d87eafa3e0c..1b42e522491 100644 --- a/sql/sql_delete.cc +++ b/sql/sql_delete.cc @@ -709,6 +709,8 @@ bool multi_delete::send_data(List<Item> &values) TABLE_LIST *del_table; DBUG_ENTER("multi_delete::send_data"); + bool ignore= thd->lex->current_select->no_error; + for (del_table= delete_tables; del_table; del_table= del_table->next_local, secure_counter++) @@ -741,8 +743,12 @@ bool multi_delete::send_data(List<Item> &values) TRG_ACTION_AFTER, FALSE)) DBUG_RETURN(1); } - else + else if (!ignore) { + /* + If the IGNORE option is used errors caused by ha_delete_row don't + have to stop the iteration. + */ table->file->print_error(error,MYF(0)); DBUG_RETURN(1); } @@ -834,6 +840,11 @@ int multi_delete::do_deletes() { int local_error= 0, counter= 0, tmp_error; bool will_batch; + /* + If the IGNORE option is used all non fatal errors will be translated + to warnings and we should not break the row-by-row iteration + */ + bool ignore= thd->lex->current_select->no_error; DBUG_ENTER("do_deletes"); DBUG_ASSERT(do_delete); @@ -872,18 +883,29 @@ int multi_delete::do_deletes() local_error= 1; break; } - if ((local_error=table->file->ha_delete_row(table->record[0]))) + + local_error= table->file->ha_delete_row(table->record[0]); + if (local_error && !ignore) { - table->file->print_error(local_error,MYF(0)); - break; + table->file->print_error(local_error,MYF(0)); + break; } - deleted++; - if (table->triggers && - table->triggers->process_triggers(thd, TRG_EVENT_DELETE, - TRG_ACTION_AFTER, FALSE)) + + /* + Increase the reported number of deleted rows only if no error occurred + during ha_delete_row. + Also, don't execute the AFTER trigger if the row operation failed. + */ + if (!local_error) { - local_error= 1; - break; + deleted++; + if (table->triggers && + table->triggers->process_triggers(thd, TRG_EVENT_DELETE, + TRG_ACTION_AFTER, FALSE)) + { + local_error= 1; + break; + } } } if (will_batch && (tmp_error= table->file->end_bulk_delete())) |