I'm working with a MySQL server version 4.1.10 (although I'm not its administrator) and I've created a database implementing several primary key, unique and foreign key constraints. However, none of them seem to be functioning in any way - I can enter, error-free, entries with duplicate...
Bug #2194 Foreign key restraints not working in 4.1.0 Submitted: 22 Dec 2003 16:10Modified: 22 Dec 2003 22:40 Reporter: Sean Canaday Email Updates: Status: Can't repeat Impact on me: None Category: MySQL Server: Command-line ClientsSeverity: S1 (Critical) Version: 4.1.0OS: Windows...
This problem is well-known since 3 years. It is in the TODO to add also that syntax to FOREIGN KEYs. MySQL does not give a syntax error, because it was the intention in the 1990's that table definitions containing FOREIGN KEY constraints should be importable to MySQL, even though MySQL ...
Environment: Sequel Ace Version: 2.0.1 Build 2029 macOS Version: 1.15.4 MySQL Version: 5.6.28 Description Linking and navigating isn't working .. copy of issue #3491 in Sequel Pro Steps To Reproduce: Go to any table with a foreign key Cl...
ⅠMySQL约束条件 【一】什么是约束条件 约束条件:限制表中的数据,保证添加到数据表中的数据准确和可靠性!凡是不符合约束的数据,插入时就会失败! 约束条件在创建表时可以使用, 也可以修改表的时候添加约束条件 【二】约束条件概览 null 和 not null 为空和不为空 限制
create table t9(idintunique, name varchar(16) ); insert t9 values(1,"geng"); insert t9 values(1,"yang"); -- 报错id重复 补充知识:notnull+unique的化学反应 create table t10(idintnotnull unique, name varchar(16) );id字段变成了主键:不为空且唯一 mysql> create table t10( ->idintno...
select * from information_schema.REFERENTIAL_CONSTRAINTS where CONSTRAINT_NAME = "foreign_key_name"; In the task list, locate the target task and click Resume in the Operation column to resume the task.Parent topic: Real-Time Migration and Synchronization from MySQL to MySQL Previous...
In this blog, we’ll look at how to resolve MySQL error code 1215: “Cannot add foreign key constraint”. Our Support customers often come to us with things like “My database deployment fails with error 1215”, “Am trying to create a foreign key and can’t get it working,” or “...
currently i'm working on a MySQL Database. For visualize the database, i set some foreign keys inside. In most cases it works perfectly, but in two cases not. I tried: ALTER TABLEtbl_uebergabe_details ADD CONSTRAINTtbl_uebergabe_details_tbl_uebergabe_ID_fk ...
foreign key not working 7181 Aimee Lin August 10, 2006 10:22PM Re: foreign key not working 2772 Rolando V. Pish August 11, 2006 09:16AM Re: foreign key not working 1820 Aimee Lin August 13, 2006 03:48PM Sorry, you can't reply to this topic. It has been closed....