引用的表'Tabs'中没有主键或候选键

Question

I have 2 tables

Table #1:

CREATE TABLE Tabs
(
    TabId int,
    UserId int,
    TabName varchar(20),
    SettingName varchar(5000), 

    PRIMARY KEY (TabId, userId),
    FOREIGN KEY (UserId) REFERENCES UserProfile(UserId),
)

Table #2:

CREATE TABLE TabsSettings
(
    TabId int,
    UserId int,
    TabName varchar(20),
    SettingName varchar(5000),
    SettingValue varchar(5000),
    ModifiedOn datetime,
    CreatedOn datetime,

    PRIMARY KEY (TabId, userId),
    FOREIGN KEY (UserId) REFERENCES Tabs(UserId),
    FOREIGN KEY (TabId) REFERENCES Tabs(TabIdId) 
)

When I am trying to execute my 2nd query it shows this error

Msg 1776, Level 16, State 0, Line 1
There are no primary or candidate keys in the referenced table 'Tabs' that match the referencing column list in the foreign key 'FK_ TabsSetti _UserI__7EF6D905'.
Msg 1750, Level 16, State 0, Line 1
Could not create constraint. See previous errors.

Answer 1

您必须使用单个外键引用这两列：

 FOREIGN KEY (TabId,UserId) REFERENCES Tabs(TabId,UserId)