[摘要]建立测试表查看版本信息select version();
5.7.22创建父表drop table if exists Models;
CREATE TABLE Models(ModelID SMA... 建立测试表查看版本信息select version();
5.7.22 创建父表drop table if exists Models;
CREATE TABLE Models
(
ModelID SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT,
Name VARCHAR(40) NOT NULL,
PRIMARY KEY (ModelID)
); 创建子表drop table if exists Orders;
CREATE TABLE Orders
(
ID SMALLINT UNSIGNED NOT NULL PRIMARY KEY,
ModelID SMALLINT UNSIGNED NOT NULL,
Description VARCHAR(40),
FOREIGN KEY (ModelID) REFERENCES Models (ModelID)
ON DELETE cascade
); 测试测试用例-无父表相应数据，先插入子表insert into Orders(Id,ModelID,Description) values (1,1,'a'); 结果：执行失败
异常：[2018-07-31 11:08:01] 23000 Cannot add or update a child row: a foreign key constraint fails (bov.Orders, CONSTRAINT Orders_ibfk_1 FOREIGN KEY (ModelID) REFERENCES Models (ModelID) ON DELETE CASCADE)
原因：通不过on delete cascade 的外键约束检查 测试用例-先插入主表数据，再插入子表数据insert into Models(ModelID,Name) values (1,'a');
insert into Orders(Id,ModelID,Description) values (1,1,'a'); 结果：执行成功 select * from Models;
1 a
select * from Orders;
1 1 a 测试用例-父子表都有数据，删除子表数据delete from Orders where id = 1; 结果：执行成功 select * from Models;
1 a
select * from Orders;
为空 测试用例-父子表都有数据，删除父表书库delete from Models where ModelID = 1; 结果：执行成功 select * from Models;
为空
select * from Orders;
为空 测试用例-父子表都有数据，更新子表外键update Orders set ModelID = 3 where ID =1; 结果：执行失败
异常：[2018-07-31 12:33:02] 23000 Cannot add or update a child row: a foreign key constraint fails (bov.Orders, CONSTRAINT Orders_ibfk_1 FOREIGN KEY (ModelID) REFERENCES Models (ModelID) ON DELETE CASCADE)
原因：通不过on delete cascade 的外键约束检查 测试用例-父子表都有数据，更新父表主键update Models set ModelID = 2 where ModelID =1; 结果：执行失败
异常：[2018-07-31 12:34:24] 23000 Cannot delete or update a parent row: a foreign key constraint fails (bov.Orders, CONSTRAINT Orders_ibfk_1 FOREIGN KEY (ModelID) REFERENCES Models (ModelID) ON DELETE CASCADE)
原因：通不过on delete cascade 的外键约束检查 测试用例-父子表都有数据，更新子表非外键update Orders set Description = 'b' where ID =1; 结果：执行成功 select * from Orders;
1 1 b 测试用例-父子表都有数据，更新父表非主键update Models set Name = 'c' where ModelID =1; 结果：执行成功 select * from Models;
1 c 相关文章：
mysql数据库索引的建立以及性能测试 mysql 高性能压力测试（总结了好久） 相关视频: 数据结构探险之线性表篇 以上就是Mysq中l建立测试父表、子表及测试用例归纳总结的详细内容，更多请关注php中文网其它相关文章！
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