Sql updating multiple rows with different values
Be careful when porting applications that use this extension.
According to the standard, the source value for a parenthesized sub-list of column names can be any row-valued expression yielding the correct number of columns.
If the item already exists, instead update the stock count of the existing item.
you should ensure that the join produces at most one output row for each row to be modified.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.Suppose we have two tables Categories and Categories_Test. The common column in the two tables is CATEGORY_ID. Please note that query below is used for illustration purpose because Category_ID alone is primary key.New Value From [table] t1 join ( Select 'Foo' as New Value, 23 as My Id union all Select 'ASD' as New Value, 47 as My Id union all Select 'FGH' as New Value, 83 as My Id ) as derived1 on t1. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.