Question

I need to connect two tables in SQL Server: Table A has a primary key called IDTableA (integer field) and Table B has a primary key IDTableB (integer field as well).

Table A contains a foreign key IDTableB whereby I want to connect both tables, this field is of type integer and its value is 0.

My problem is that since there is no record in Table B whose ID is 0, do not show me those records from table A with a 0 stored in the foreign key.

The relationship between both tables is: a record in Table A may belong to one or no record in the table B. Therefore, the default value of the foreign key in table A is 0.

I tried connecting the tables with INNER JOIN and LEFT OUTER JOIN but it does not work and left no records show. What I can do?.

Thanks.

My SQL statement:

Select TableA.* 
From TableA 
inner join TableB on TableA.IdTableB = TableB.IdTableB

The Solution:

    Select TableA.* 
    From TableA 
    LEFT JOIN TableB on TableA.IdTableB = TableB.IdTableB

More Info:
LEFT JOIN vs. LEFT OUTER JOIN in SQL Server

Answer 1

Try to use left join only

Something like this

Select *
from table_1 tbl1
left join table_2 tbl2 on tbl2.id = tbl1.id