Updating two tables
The returning clause retrieves the rows affected by a DML statement.
You can specify this clause for tables and materialized views and for views with a single base table.
I would like to know how can I send to the controller two different values as a key for each table to be updated if possible.
Every now and then you will get someone asking how to update two tables with one statement in SQL Server. the person then walks away muttering something about how My SQL allows it.
If IGNORE is provided, all errors encountered during the update are ignored.
If an update on a row would result in a violation of a primary key or unique index, the update on that row is not performed.
In this article, we are going to look at four scenarios for Oracle cross table update. Category_ID) where exists ( select * from Categories b where b. These columns uniquely identify a record in a table.
I am updating the first table, but when I try to update the second one I got the problem. because the Key from both tables are different and when the controller receive the information is getting same Key Id for both tables as showed on the image.
This process of extracting the elements of a collection is called refers to a LOB object attribute, then you must first initialize it with a value of empty or null. Also, if you are updating a LOB value using some method other than a direct to set the column to the value previously specified as the default value for the column.
If no default value for the corresponding column has been specified, then the database sets the column to null.
Cross table update (also known as correlated update, or multiple table update) in Oracle uses non-standard SQL syntax format (non ANSI standard) to update rows in another table. Update data in table A based on two or more common columns in table B.
The differences in syntax are quite dramatic compared to other database systems like MS SQL Server or My SQL. Updates based on two or more common columns are normally used for tables where multiple columns work together as a primary key (known as composite primary key).