ndb_trigger.test

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

# Tests which involve triggers and NDB storage engine
--source include/have_ndb.inc
--source include/not_embedded.inc

# 
# Test for bug#18437 "Wrong values inserted with a before update
# trigger on NDB table". SQL-layer didn't properly inform handler
# about fields which were read and set in triggers. In some cases 
# this resulted in incorrect (garbage) values of OLD variables and
# lost changes to NEW variables.
# You can find similar tests for ON INSERT triggers in federated.test
# since this engine so far is the only engine in MySQL which cares
# about field mark-up during handler::write_row() operation.
#

--disable_warnings
drop table if exists t1, t2, t3;
--enable_warnings

create table t1 (id int primary key, a int not null, b decimal (63,30) default 0) engine=ndb;
create table t2 (op char(1), a int not null, b decimal (63,30));
create table t3 select 1 as i;
	
delimiter //;
create trigger t1_bu before update on t1 for each row
begin
  insert into t2 values ("u", old.a, old.b);
  set new.b = old.b + 10;
end;//
create trigger t1_bd before delete on t1 for each row
begin
  insert into t2 values ("d", old.a, old.b);
end;//
delimiter ;//
insert into t1 values (1, 1, 1.05), (2, 2, 2.05), (3, 3, 3.05), (4, 4, 4.05);

# Check that usual update works as it should
update t1 set a=5 where a != 3;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check that everything works for multi-update
update t1, t3 set a=6 where a = 5;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check for delete
delete from t1 where a != 3;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check for multi-delete
insert into t1 values (1, 1, 1.05), (2, 2, 2.05), (4, 4, 4.05);
delete t1 from t1, t3 where a != 3;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check for insert ... on duplicate key update
insert into t1 values (4, 4, 4.05);
insert into t1 (id, a) values (4, 1), (3, 1) on duplicate key update a= a + 1;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check for insert ... select ... on duplicate key update
delete from t3;
insert into t3 values (4), (3);
insert into t1 (id, a) (select i, 1 from t3) on duplicate key update a= a + 1;
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t2;
# Check for replace
replace into t1 (id, a) values (4, 1), (3, 1);
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t1;
delete from t2;
# Check for replace ... select ...
insert into t1 values (3, 1, 1.05), (4, 1, 2.05);
replace into t1 (id, a) (select i, 2 from t3);
select * from t1 order by id;
select * from t2 order by op, a, b;
delete from t1;
delete from t2;
# Check for load data replace
insert into t1 values (3, 1, 1.05), (5, 2, 2.05);
load data infile '../std_data_ln/loaddata5.dat' replace into table t1 fields terminated by '' enclosed by '' ignore 1 lines (id, a);
select * from t1 order by id;
select * from t2 order by op, a, b;

drop tables t1, t2, t3;

# Test for bug#26242
# Verify that AFTER UPDATE/DELETE triggers are executed
# after the change has actually taken place

CREATE TABLE t1 (
  id INT NOT NULL PRIMARY KEY,
  xy INT
) ENGINE=ndbcluster;

INSERT INTO t1 VALUES (1, 0);

DELIMITER //;
CREATE TRIGGER t1_update AFTER UPDATE ON t1 FOR EACH ROW BEGIN REPLACE INTO t2 SELECT * FROM t1 WHERE t1.id = NEW.id; END //
DELIMITER ;//

CREATE TABLE t2 (
  id INT NOT NULL PRIMARY KEY,
  xy INT
) ENGINE=ndbcluster;

INSERT INTO t2 VALUES (2, 0);

CREATE TABLE t3 (id INT NOT NULL PRIMARY KEY) ENGINE=ndbcluster;

INSERT INTO t3 VALUES (1);

CREATE TABLE t4 LIKE t1;

DELIMITER //;
CREATE TRIGGER t4_update AFTER UPDATE ON t4 FOR EACH ROW BEGIN REPLACE INTO t5 SELECT * FROM t4 WHERE t4.id = NEW.id; END //
DELIMITER ;//

CREATE TABLE t5 LIKE t2;

UPDATE t1 SET xy = 3 WHERE id = 1;
SELECT xy FROM t1 where id = 1;
SELECT xy FROM t2 where id = 1;

UPDATE t1 SET xy  = 4 WHERE id IN (SELECT id FROM t3 WHERE id = 1);
SELECT xy FROM t1 where id = 1;
SELECT xy FROM t2 where id = 1;

INSERT INTO t4 SELECT * FROM t1;
INSERT INTO t5 SELECT * FROM t2;
UPDATE t1,t4 SET t1.xy = 3, t4.xy = 3 WHERE t1.id = 1 AND t4.id = 1;
SELECT xy FROM t1 where id = 1;
SELECT xy FROM t2 where id = 1;
SELECT xy FROM t4 where id = 1;
SELECT xy FROM t5 where id = 1;

UPDATE t1,t4 SET t1.xy = 4, t4.xy = 4 WHERE t1.id IN (SELECT id FROM t3 WHERE id = 1) AND t4.id IN (SELECT id FROM t3 WHERE id = 1);
SELECT xy FROM t1 where id = 1;
SELECT xy FROM t2 where id = 1;
SELECT xy FROM t4 where id = 1;
SELECT xy FROM t5 where id = 1;

INSERT INTO t1 VALUES (1,0) ON DUPLICATE KEY UPDATE xy = 5;
SELECT xy FROM t1 where id = 1;
SELECT xy FROM t2 where id = 1;

DROP TRIGGER t1_update;
DROP TRIGGER t4_update;

DELIMITER //;
CREATE TRIGGER t1_delete AFTER DELETE ON t1 FOR EACH ROW BEGIN REPLACE INTO t2 SELECT * FROM t1 WHERE t1.id > 4; END //
DELIMITER ;//

DELIMITER //;
CREATE TRIGGER t4_delete AFTER DELETE ON t4 FOR EACH ROW BEGIN REPLACE INTO t5 SELECT * FROM t4 WHERE t4.id > 4; END //
DELIMITER ;//

INSERT INTO t1 VALUES (5, 0),(6,0);
INSERT INTO t2 VALUES (5, 1),(6,1);
INSERT INTO t3 VALUES (5);
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;
DELETE FROM t1 WHERE id IN (SELECT id FROM t3 WHERE id = 5);
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;

INSERT INTO t1 VALUES (5,0);
UPDATE t2 SET xy = 1 WHERE id = 6;
TRUNCATE t4;
INSERT INTO t4 SELECT * FROM t1;
TRUNCATE t5;
INSERT INTO t5 SELECT * FROM t2;
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;
SELECT * FROM t4 order by id;
SELECT * FROM t5 order by id;
DELETE FROM t1,t4 USING t1,t3,t4 WHERE t1.id IN (SELECT id FROM t3 WHERE id = 5) AND t4.id IN (SELECT id FROM t3 WHERE id = 5);
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;
SELECT * FROM t4 order by id;
SELECT * FROM t5 order by id;

INSERT INTO t1 VALUES (5, 0);
REPLACE INTO t2 VALUES (6,1);
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;
REPLACE INTO t1 VALUES (5, 1);
SELECT * FROM t1 order by id;
SELECT * FROM t2 order by id;

DROP TRIGGER t1_delete;
DROP TRIGGER t4_delete;
DROP TABLE t1, t2, t3, t4, t5;

--echo End of 5.0 tests