How to Update a Table Column Using an Inner Join in SQL?

Updating Data from an Inner Join in SQL

Need to update a table column using values retrieved from another table using an inner join? Here's how you can achieve it using SQL syntax:

In your example, you have selected FermentIds from the FERMENT table and joined it with the BELGIUM BEER table. Consider this:

SELECT FERMENT.FermentId
FROM FERMENT
INNER JOIN [BELGIUM BEER]
ON FERMENT.FermentName = [BELGIUM BEER].FermentId
ORDER BY [BELGIUM BEER].BeerId

To update a different table (EXAMPLETABLE) using these selected FermentIds:

UPDATE EXAMPLETABLE
SET EXAMPLETABLE.FermentId = a.FermentId
FROM a
(SELECT FERMENT.FermentId
FROM FERMENT
INNER JOIN [BELGIUM BEER]
ON FERMENT.FermentName = [BELGIUM BEER].FermentId ORDER BY [BELGIUM BEER].BeerId) a

However, in Microsoft Access, modify the syntax slightly:

UPDATE FERMENT
INNER JOIN ([BELGIUM BEER] ON FERMENT.FermentName = [BELGIUM BEER].FermentId)
SET EXAMPLETABLE.FermentColumn = a.FermentColumn

Note:

• Replace EXAMPLETABLE.FermentId with the actual column name you want to update.
• The JOIN statement is included after the UPDATE statement.
• The SET statement should come after the JOIN.
• The ORDER BY clause is omitted.

If you encounter any issues, try using the Query Builder to create the join statement. This step ensures the correct syntax for your specific database system.

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