How do I DELETE a record from multiple tables in SQL Server?

How do I DELETE a record from multiple tables in SQL Server?

You cannot DELETE from multiple tables with a single expression in SQL 2005 – or any other standard SQL for that matter. Access is the exception here. The best method to get this effect is to specify FOREIGN KEYS between the table with an ON DELETE trigger .

How do I DELETE multiple tables in a single query?

DELETE table1,table2,table3,table4 FROM table1 LEFT JOIN table2 ON table1.pk=table2.pk LEFT JOIN table3 ON table3.pk=table2.pk LEFT JOIN table4 ON table4.pk=table3.pk WHERE table1.pk IN (101,102,106,…)

What’s difference between truncate and DELETE?

The DELETE statement removes rows one at a time and records an entry in the transaction log for each deleted row. TRUNCATE TABLE removes the data by deallocating the data pages used to store the table data and records only the page deallocations in the transaction log.

How do I delete a row in a table that contains foreign keys to other tables?

1-You first need to select rows to delete(in a cursor) 2-Then for each row in the cursor you delete the referencing rows and after that delete the row him self.

How do I delete multiple tables in database?

You can drop one or more tables by using the DROP TABLE command, which can be executed from the Analyze page or any connected SQL client. To drop a single table, enter DROP TABLE “S”. “X” , where S is the schema and X is the table name. To drop several tables, enter DROP TABLE “S”.

How do I delete a row from multiple tables in SQL?

SQL DELETE

1. First, you specify the table name where you want to remove data in the DELETE FROM clause.
2. Second, you put a condition in the WHERE clause to specify which rows to remove. If you omit the WHERE clause, the statement will remove all rows in the table.

Can we delete using joins?

SQL SERVER – DELETE From SELECT Statement – Using JOIN in DELETE Statement – Multiple Tables in DELETE Statement. It is totally possible to use JOIN and multiple tables in the DELETE statement.

Can we rollback delete and TRUNCATE?

DROP and TRUNCATE are DDL commands, whereas DELETE is a DML command. DELETE operations can be rolled back (undone), while DROP and TRUNCATE operations cannot be rolled back.

Can a single SQL query delete records in two tables?

Now when u delete a record from the master table all other details table record based on the deleting rows primary key value, will be deleted automatically. So in that case a single delete query of master table can delete master tables data as well as child tables data.

Can you delete multiple rows from a table?

You can specify multiple tables in a DELETE statement to delete rows from one or more tables depending on the particular condition in the WHERE clause. However, you cannot use ORDER BY or LIMIT in a multiple-table DELETE. The table_references clause lists the tables involved in the join. Its syntax is described in Section 12.2.8.1, “JOIN Syntax”.

Can a DELETE statement be used on more than one table?

The Delete statement only supports deleting rows from a single table. You can accomplish the same in 2 statements:

How to delete messages from two table in one query?

FROM messages a LEFT JOIN usersmessages b ON b.messageid = a.messageid WHERE a.messageid = 1 translation: delete from table messages where messageid =1, if table uersmessages has messageid = messageid of table messages, delete that row of uersmessages table.