Incorrect table definition; there can be only one auto column and it must be defined as a key,程序员大本营,技术文章内容聚合第一站。
The last sentence makes it seem that it can have multiple foreign keys with same value (e.g. 1), but I read somewhere else they had to be unique. Subject Written By Posted Can a table have multiple records with the same foreign key?
a我没有看见 I have not seen[translate] atable can have only one primary key 桌只可能有一个主关键字[translate]
Bug description You are unable to create a new record by using the foreign key to another table. For example if a Post has a userId column, you cannot just set the userId and save the record. How to reproduce Given the schema shown below...
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Features included: - Export full database schema (tables, views, sequences, indexes), with unique, primary, foreign key and check constraints. - Export grants/privileges for users and groups. - Export range/list partitions and sub partitions. - Export a table selection (by specifying the ...
Suppose further that each proposal only has one sales person assigned and one client. So your proposal table would have two foreign keys, one with the client ID and one with the sales rep ID. However, at the time the record is created, a sales rep is not always assigned (because no ...
CREATE TABLE dbo.Child2 (child_id INT PRIMARY KEY, parent_id INT NULL CONSTRAINT FK_C2_P REFERENCES dbo.Parent); GO INSERT dbo.Parent VALUES (1), (2), (3); INSERT dbo.Child1 VALUES (1, NULL), (2, 1), (3, 2), (4, 2), (6, 3); INSERT dbo.Child2 VALUES (1, NULL),...
Can a [non primary key] be referenced as [foriegn key] in other table? Can a uniqueidentifier have a default value? can I access function on remote server through linked server? Can i call a stored procedure in view?. Can I configure FILESTREAM to use file share? Can I delete NT SE...
There can only be one auto-incrementing column in a table, and it must be a key. Thezip_codefield is incorrectly defined with an auto-increment attribute and a length parameter. Here's the corrected migration code: classCreateUserAddress...