with - sql update inner join




How to Delete using INNER JOIN with SQL Server? (10)

I want to delete using INNER JOIN in SQL Server 2008.

But I get this error:

Msg 156, Level 15, State 1, Line 15
Incorrect syntax near the keyword 'INNER'.

My code:

DELETE FROM WorkRecord2 
INNER JOIN Employee ON EmployeeRun=EmployeeNo
WHERE Company = '1' AND Date = '2013-05-06'

This is a simple query to delete the records from two table at a time.

DELETE table1.* ,
       table2.* 
FROM table1 
INNER JOIN table2 ON table1.id= table2.id where table1.id ='given_id'

Another way using CTE.

;WITH cte 
     AS (SELECT * 
         FROM   workrecord2 w 
         WHERE  EXISTS (SELECT 1 
                        FROM   employee e 
                        WHERE  employeerun = employeeno 
                               AND company = '1' 
                               AND date = '2013-05-06')) 
DELETE FROM cte 

Note : We cannot use JOIN inside CTE when you want to delete.


Here's what I currently use for deleting or even, updating:

DELETE FROM      w
FROM             WorkRecord2   w,
                 Employee      e
WHERE            w.EmployeeRun = e.EmployeeNo
             AND w.Company = '1' 
             AND w.Date = '2013-05-06'

In SQL Server Management Studio I can easily create a SELECT query.

SELECT Contact.Naam_Contactpersoon, Bedrijf.BedrijfsNaam, Bedrijf.Adres, Bedrijf.Postcode
FROM Contact
INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf

I can execute it, and all my contacts are shown.

Now change the SELECT to a DELETE:

DELETE Contact
FROM Contact
INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf

All the records you saw in the SELECT statement will be removed.

You may even create a more difficult inner join with he same procedure, for example:

DELETE FROM Contact
INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf
INNER JOIN LoginBedrijf ON Bedrijf.IDLoginBedrijf = LoginBedrijf.IDLoginBedrijf

Just add the name of the table between DELETE and FROM from where you want to delete records because we have to specify the table to delete. Also remove ORDER BY clause because there is nothing to order while deleting records.

So your final query should be like this:

    DELETE WorkRecord2 
      FROM WorkRecord2 
INNER JOIN Employee 
        ON EmployeeRun=EmployeeNo
     WHERE Company = '1' 
       AND Date = '2013-05-06';

Possible this be helpful for you -

DELETE FROM dbo.WorkRecord2 
WHERE EmployeeRun IN (
    SELECT e.EmployeeNo
    FROM dbo.Employee e
    WHERE ...
)

Or try this -

DELETE FROM dbo.WorkRecord2 
WHERE EXISTS(
    SELECT 1
    FROM dbo.Employee e
    WHERE EmployeeRun = e.EmployeeNo
        AND ....
)

Try this query :

DELETE WorkRecord2, Employee 
FROM WorkRecord2 
INNER JOIN Employee ON (tbl_name.EmployeeRun=tbl_name.EmployeeNo)
WHERE tbl_name.Company = '1' 
AND tbl_name.Date = '2013-05-06';

Try this, it might help

 DELETE WorkRecord2 
          FROM WorkRecord2 
    INNER JOIN Employee 
            ON EmployeeRun=EmployeeNo
         WHERE Company = '1' 
           AND Date = '2013-05-06';

You don't specify the tables for Company and Date, you might want to fix that.

Standard SQL using MERGE:

MERGE WorkRecord2 T
   USING Employee S
      ON T.EmployeeRun = S.EmployeeNo
         AND Company = '1'
         AND Date = '2013-05-06'
WHEN MATCHED THEN DELETE;

The answer from @Devart is also Standard SQL though incomplete, should look more like this:

DELETE 
  FROM WorkRecord2
  WHERE EXISTS ( SELECT *
                   FROM Employee S
                  WHERE S.EmployeeNo = WorkRecord2.EmployeeRun
                        AND Company = '1'
                        AND Date = '2013-05-06' );

The important thing to note about the above is it is clear the delete is targeting a single table, as enforced in the second example by requiring a scalar subquery.

For me the various proprietary syntax answers are harder to read and understand. I guess the mindset for is best described in the answer by @frans eilering i.e. the person writing the code doesn't necessarily care about the person who will read and maintain the code.


You need to specify what table you are deleting from, here is a version with an alias:

DELETE w
FROM WorkRecord2 w
INNER JOIN Employee e
  ON EmployeeRun=EmployeeNo
WHERE Company = '1' AND Date = '2013-05-06'




sql-delete