How can I delete using INNER JOIN with SQL Server? - sql

Question

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'

Answer 1

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'

Answer 2

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 the 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';

Answer 3

It is possible this will 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 ....
)

Answer 4

Try this:
DELETE FROM WorkRecord2
FROM Employee
Where EmployeeRun=EmployeeNo
And Company = '1'
AND Date = '2013-05-06'

Answer 5

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 the same procedure, for example:
DELETE FROM Contact
INNER JOIN Bedrijf ON Bedrijf.IDBedrijf = Contact.IDbedrijf
INNER JOIN LoginBedrijf ON Bedrijf.IDLoginBedrijf = LoginBedrijf.IDLoginBedrijf

Answer 6

It should be:
DELETE zpost
FROM zpost
INNER JOIN zcomment ON (zpost.zpostid = zcomment.zpostid)
WHERE zcomment.icomment = "first"

Answer 7

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';

Answer 8

You could even do a sub-query. Like this code below:
DELETE FROM users WHERE id IN(
SELECT user_id FROM Employee WHERE Company = '1' AND Date = '2013-05-06'
)

Answer 9

Another way is 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.

Answer 10

Here's what I currently use for deleting or even, updating:
DELETE w
FROM WorkRecord2 w,
Employee e
WHERE w.EmployeeRun = e.EmployeeNo
AND w.Company = '1'
AND w.Date = '2013-05-06'

Answer 11

You don't specify the tables for Company and Date, and 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. It 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.

Answer 12

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'

Answer 13

Here is my SQL Server version
DECLARE #ProfileId table(Id bigint)
DELETE FROM AspNetUsers
OUTPUT deleted.ProfileId INTO #ProfileId
WHERE Email = #email
DELETE FROM UserProfiles
WHERE Id = (Select Id FROM #ProfileId)

Answer 14

Delete multiple table data using transaction block, table variable and JOIN.
BEGIN TRANSACTION;
declare #deletedIds table ( id int );
DELETE w
output deleted.EmployeeRun into #deletedIds
FROM WorkRecord2 w
INNER JOIN Employee e
ON e.EmployeeNo = w.EmployeeRun
AND w.Company = 1
AND w.date = '2013-05-06';
DELETE e
FROM Employee as e
INNER JOIN #deletedIds as d
ON d.id = e.EmployeeNo;
COMMIT TRANSACTION;
Please check from url https://dbfiddle.uk/?rdbms=sqlserver_2014&fiddle=43330dda6f1b71b8ec4172a24d5b6921
Delete multiple table data with temporary table and JOIN. Drop temporary table after deletion.
BEGIN TRANSACTION;
-- create temporary table
create table #deletedRecords (employeeId int);
-- INSERT INTO #deletedRecords
SELECT e.EmployeeNo
FROM WorkRecord2 w
INNER JOIN Employee e
ON e.EmployeeNo = w.EmployeeRun
AND w.Company = 1
AND w.date = '2013-05-06';
-- delete from WorkRecord2
DELETE w
FROM WorkRecord2 w
INNER JOIN #deletedRecords d
ON w.EmployeeRun = d.employeeId;
-- delete from Employee using exists
DELETE
FROM Employee
WHERE EXISTS (SELECT 1
FROM #deletedRecords d
WHERE d.employeeId = EmployeeNo);
-- drop temporary table
DROP TABLE #deletedRecords;
COMMIT TRANSACTION;
Please check from url https://dbfiddle.uk/?rdbms=sqlserver_2014&fiddle=d52c6c1ed91669d68fcc6bc91cb32d78
Alternative way to create temporary tables by using SELECT INTO
BEGIN TRANSACTION;
SELECT e.EmployeeNo employeeId
INTO #deletedRecords
FROM WorkRecord2 w
INNER JOIN Employee e
ON e.EmployeeNo = w.EmployeeRun
AND w.Company = 1
AND w.date = '2013-05-06';
-- delete from WorkRecord2
DELETE w
FROM WorkRecord2 w
INNER JOIN #deletedRecords d
ON w.EmployeeRun = d.employeeId;
-- delete from Employee using exists
DELETE
FROM Employee
WHERE EXISTS (SELECT 1
FROM #deletedRecords d
WHERE d.employeeId = EmployeeNo);
-- drop temporary table
DROP TABLE #deletedRecords;
COMMIT TRANSACTION;
Please check from url https://dbfiddle.uk/?rdbms=sqlserver_2014&fiddle=0f02f05616ce5b4dcc8fc67c6cf1e640
Remove a single table data using JOIN
DELETE w
FROM WorkRecord2 w
INNER JOIN Employee e
ON e.EmployeeNo = w.EmployeeRun
AND w.Company = 1
AND w.date = '2013-05-06'
Please check from url https://dbfiddle.uk/?rdbms=sqlserver_2014&fiddle=84a60d1368556a8837281df36579334a
Delete single table data using CTE
WITH cte AS (
SELECT w.EmployeeRun
FROM WorkRecord2 w
WHERE EXISTS (SELECT 1
FROM Employee
WHERE EmployeeNo = w.EmployeeRun)
AND w.Company = 1
AND w.date = '2013-05-06'
)
DELETE
FROM cte
Please check from url https://dbfiddle.uk/?rdbms=sqlserver_2014&fiddle=6590007b3c8c2ffad5563bd86606c5b1
Use ON CASCADE DELETE during foreign key creation in child table. If remove parent table data then corresponding child table data is automatically deleted.