Updating a table from another table in oracle
One way to actually remember how to do something (so you don’t have to always google it) is to explain how to do it.I’m going to do a quick post on the most straightforward way to update a column from another table in Oracle. You would just write something like The syntax is similar in my Sql.
The table holds comments on data items, where the data is held in datasets.Regardless of its form, it must return a collection value—that is, a value whose type is nested table or varray.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.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.