Create a join in a SELECT statement to retrieve data from two or more tables based on matching column values.
A join enables you to select data from two or more tables into a single results set without repeating unnecessary data. You can create different kinds of joins depending on what data from each table you want in the results set.
Table 1. Join operators
||Returns data from all tables based on a common condition.
|Left outer join
||Returns all the values from the left table plus matched values
from the right table, and fills in NULLs for any missing values from the right table.
|Right outer join
||Returns all the values from the right table and matched values from
the left table, and fills in NULLs for any missing values from the left table.
|Full outer join
||Combines the results of both left and right outer joins. The joined
table contains all records from both tables, and fills in NULLs
for missing matches on either side.
Some syntactic variations might exist between your database and the SQL syntax that SQL Query Builder supports; consequently, some SQL Query Builder features might not work with your database.