Can you delete from two tables in SQL?

Can I DELETE from multiple tables SQL?

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.

How do you DELETE values from two 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.

How do you DELETE data from two tables using join?

SQL Syntax for delete JOIN

  1. DELETE [target table]
  2. FROM [table1]
  3. INNER JOIN [table2]
  4. ON [table1.[joining column] = [table2].[joining column]
  5. WHERE [condition]

Can we select from two tables in SQL?

In SQL we can retrieve data from multiple tables also by using SELECT with multiple tables which actually results in CROSS JOIN of all the tables.

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Can you DELETE from two tables at once?

The syntax also supports deleting rows from multiple tables at once. To delete rows from both tables where there are matching id values, name them both after the DELETE keyword: … DELETE t1 FROM t1 LEFT JOIN t2 ON t1.id = t2.id WHERE t2.id IS NULL; MySQL supports a second multiple-table DELETE syntax.

What is Cascade DELETE in SQL?

DELETE CASCADE: When we create a foreign key using this option, it deletes the referencing rows in the child table when the referenced row is deleted in the parent table which has a primary key.

How do you clean a table in SQL?

To delete every row in a table:

  1. Use the DELETE statement without specifying a WHERE clause. With segmented table spaces, deleting all rows of a table is very fast. …
  2. Use the TRUNCATE statement. The TRUNCATE statement can provide the following advantages over a DELETE statement: …
  3. Use the DROP TABLE statement.

How do you write a DELETE query?

SQL DELETE Statement

  1. DELETE FROM table_name WHERE condition;
  2. Example. DELETE FROM Customers WHERE CustomerName=’Alfreds Futterkiste’;
  3. DELETE FROM table_name;
  4. Example. DELETE FROM Customers;

How do I delete multiple table records in one query?

Your eventID in all table will make it work. For deleting records from multiple tables: You could define Foreign Key constraints (which you have defined as EventID) for the other tables that reference the master table’s ID with ON DELETE CASCADE. This would cause the related rows in those tables to be deleted.

Can we use delete In join?

It is totally possible to use JOIN and multiple tables in the DELETE statement. Let us use the same table structure which we had used previously. Let us see the following example.

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Can you delete with an inner join?

Delete with inner join is used to delete all the records from the first table and all the matching records from the second table.

How do I SELECT from two tables?

SELECT orders. order_id, suppliers.name. FROM suppliers. INNER JOIN orders.

Example syntax to select from multiple tables:

  1. SELECT p. p_id, p. cus_id, p. p_name, c1. name1, c2. name2.
  2. FROM product AS p.
  3. LEFT JOIN customer1 AS c1.
  4. ON p. cus_id=c1. cus_id.
  5. LEFT JOIN customer2 AS c2.
  6. ON p. cus_id = c2. cus_id.

How can I get different records from two tables in SQL?

Different Types of SQL JOINs

  1. (INNER) JOIN : Returns records that have matching values in both tables.
  2. LEFT (OUTER) JOIN : Returns all records from the left table, and the matched records from the right table.
  3. RIGHT (OUTER) JOIN : Returns all records from the right table, and the matched records from the left table.

How can I get data from two tables in a single query?

To put it simply, the “Join” makes relational database systems “relational”. Joins allow you to link data from two or more tables together into a single query result–from one single SELECT statement. A “Join” can be recognized in a SQL SELECT statement if it has more than one table after the FROM keyword.