Oracle SQL - How To Delete an Existing Row from a Table

How To Delete an Existing Row from a Table

Q

How To Delete an Existing Row from a Table? - Oracle DBA FAQ - Understanding SQL DML Statements

✍: FYIcenter.com

A

If you want to delete an existing row from a table, you can use the DELETE statement with a WHERE clause to identify that row. Here is good sample of DELETE statements:

INSERT INTO fyi_links (url, id) 
  VALUES ('http://www.myspace.com', 301);
1 row created.

SELECT * FROM fyi_links WHERE id = 301;
   ID URL                      NOTES     COUNTS CREATED
----- ------------------------ -------- ------- ---------
  301 http://www.myspace.com    NULL     NULL   07-MAY-06  

DELETE FROM fyi_links WHERE id = 301;
1 row deleted.

SELECT * FROM fyi_links WHERE id = 301;
no rows selected

2007-04-21, 4436👍, 0💬

How To Delete Multiple Rows from a Table
How To Delete Multiple Rows from a Table? - Oracle DBA FAQ - Understanding SQL DML Statements You can delete multiple rows from a table in the same way as deleting a single row, except that the WHERE clause will match multiple rows. The tutorial exercise below deletes 3 rows from the fyi_links table... 2007-04-21, 4754👍, 0💬

How To Delete All Rows a Table
How To Delete All Rows a Table? - Oracle DBA FAQ - Understanding SQL DML Statements If you want to delete all rows from a table, you have two options: Use the DELETE statement with no WHERE clause. Use the TRUNCATE TABLE statement. The TRUNCATE statement is more efficient the DELETE statement. The t... 2007-04-21, 4636👍, 0💬

How To Use Values from Other Tables in UPDATE Statements
How To Use Values from Other Tables in UPDATE Statements? - Oracle DBA FAQ - Understanding SQL DML Statements If you want to update values in one with values from another table, you can use a subquery in the SET clause. The subquery should return only one row for each row in the update table that ma... 2007-04-21, 4441👍, 0💬

How To Delete an Existing Row from a Table
How To Delete an Existing Row from a Table? - Oracle DBA FAQ - Understanding SQL DML Statements If you want to delete an existing row from a table, you can use the DELETE statement with a WHERE clause to identify that row. Here is good sample of DELETE statements: INSERT INTO fyi_links (url, id) VAL... 2007-04-21, 4437👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.