information_schema_inno.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.

-- source include/have_innodb.inc
--disable_warnings
DROP TABLE IF EXISTS t1,t2,t3;
--enable_warnings

#
# Test for KEY_COLUMN_USAGE & TABLE_CONSTRAINTS tables
#

CREATE TABLE t1 (id INT NOT NULL, PRIMARY KEY (id)) ENGINE=INNODB;
CREATE TABLE t2 (id INT PRIMARY KEY, t1_id INT, INDEX par_ind (t1_id, id),
FOREIGN KEY (t1_id) REFERENCES t1(id)  ON DELETE CASCADE,
FOREIGN KEY (t1_id) REFERENCES t1(id)  ON UPDATE CASCADE) ENGINE=INNODB;

CREATE TABLE t3 (id INT PRIMARY KEY, t2_id INT, INDEX par_ind (t2_id),
FOREIGN KEY (id, t2_id) REFERENCES t2(t1_id, id)  ON DELETE CASCADE) ENGINE=INNODB;

select * from information_schema.TABLE_CONSTRAINTS where
TABLE_SCHEMA= "test";
select * from information_schema.KEY_COLUMN_USAGE where
TABLE_SCHEMA= "test";

drop table t3, t2, t1;