How do I write a full outer join query in access

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Original query:

SELECT * 
FROM AA
FULL OUTERJOIN BB on (AA.C_ID = BB.C_ID);  

How do I convert the query above to make it compatible in Microsoft Access?

I am assuming:

SELECT *
FROM AA
FULL LEFT JOIN BB ON (AA.C_ID = BB.C_ID);

I haven't dealt with the "FULL" criteria before am I correctly converting the first query into a query compatible with Access?


Assuming there are not duplicate rows in AA and BB (i.e. all the same values), a full outer join is the equivalent of the union of a left join and a right join.

SELECT *
    FROM AA
        LEFT JOIN BB ON AA.C_ID = BB.C_ID
UNION
SELECT *
    FROM AA
        RIGHT JOIN BB ON AA.C_ID = BB.C_ID

If there are duplicate rows (and you want to keep them), add WHERE AA.C_ID IS NULL at the end, or some other field that is only null if there is not corresponding record from AA.

EDIT:

See a similar approach here.

It recommends the more verbose, but more performant

SELECT *
    FROM AA
        JOIN BB ON AA.C_ID = BB.C_ID
UNION ALL
SELECT *
    FROM AA
        LEFT JOIN BB ON AA.C_ID = BB.C_ID
    WHERE BB.C_ID IS NULL
UNION ALL
SELECT *
    FROM AA
        RIGHT JOIN BB ON AA.C_ID = BB.C_ID
    WHERE AA.C_ID IS NULL

However, this assumes that AA.C_ID and BB.C_ID are not null.

How to Create a Full Outer Join in Access, In this tutorial, I'll show you the steps to create a full outer join in Access. I'll use a simple example to demonstrate this concept. That way, you'll make sure that all of your records are fully captured. How to Create a Full Outer Join in Access. You can separately apply Left and Right Joins. Then, you can use Union to get your desired full outer join. Here is the general template that you may use to create your full outer join in Access: SELECT * FROM Table_1 LEFT JOIN Table_2 ON Table_2.ID = Table_1.ID UNION SELECT * FROM Table_1 RIGHT JOIN Table_2 ON Table_2.ID = Table_1.ID


The more eficient and faster code:

SELECT *
    FROM AA
        LEFT JOIN BB ON AA.C_ID = BB.C_ID
UNION ALL
SELECT *
    FROM AA
        RIGHT JOIN BB ON AA.C_ID = BB.C_ID
    WHERE AA.C_ID IS NULL

Join tables and queries - Access - Office Support, How do you do a full outer join in access? If you don’t see a relationship between the sources, add a join. Drag from the field you want in one data source to the corresponding field in another data source. The table you drag from is the table that will appear on the left in the Join Properties dialog box. By default, Access creates an inner join. If you need an outer join, change its type. 3.


I found that if the field names are the same in both tables they will need to be listed individually rather than using the * operator. Also, the second SELECT statement needs to reference the other table. Simply using the same SQL as the first and changing it to a RIGHT JOIN does not allow the inclusion of the rows in the BB table.

SELECT AA.C_ID
FROM AA
LEFT JOIN BB ON 
  AA.C_ID = BB.C_ID
UNION ALL 
SELECT BB.C_ID
FROM BB
LEFT JOIN AA ON 
  AA.C_ID = BB.C_ID
WHERE AA.C_ID IS NULL;

Implementing the Equivalent of a FULL OUTER JOIN in Microsoft , How do you create an outer join query in access? Assuming there are not duplicate rows in AA and BB (i.e. all the same values), a full outer join is the equivalent of the union of a left join and a right join. SELECT * FROM AA LEFT JOIN BB ON AA.C_ID = BB.C_ID UNION SELECT * FROM AA RIGHT JOIN BB ON AA.C_ID = BB.C_ID.


Full outer join in Access, If you need to perform a FULL OUTER JOIN in Access, are you "up a go though an example using the sample Northwind Access database. I'm happy to do some minor Excel manipulation afterwards if necessary. I wanted to do a full join, but the Access query designer properties window on the join allows me to choose ALL from table A and matching from table B, ALL from table B and matching from table A, or only those which match in both A and B.


Full Outer Join in MS Access, If we could write a query for each of these sets of records then we could get the full outer query as the union of the three simple queries. The first set is easy, it's just  The FULL OUTER JOIN keyword returns all records when there is a match in left (table1) or right (table2) table records. Note: FULL OUTER JOIN can potentially return very large result-sets! Tip: FULL OUTER JOIN and FULL JOIN are the same. In this tutorial we will use the well-known Northwind sample database. Below is a selection from the


SQL Full Outer Join, I wanted to do a full join, but the Access query designer properties window on the join allows me to choose ALL from table A and matching from  There are two types of OUTER JOINs that the Access database engine supports: LEFT OUTER JOINs and RIGHT OUTER JOINs. Think of two tables that are beside each other, a table on the left and a table on the right. The LEFT OUTER JOIN selects all rows in the right table that match the relational comparison criteria,