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Oracle UPDATE Statement

In Oracle, UPDATE statement is used to update the existing records in a table. You can update a table in 2 ways.

Traditional Update table method


Update Table by selecting rocords from another table



1) column1, column2, ... column_n:

It specifies the columns that you want to update.

2) expression1, expression2, ...expression_n:

This specifies the values to assign to the column1, column2, ?. column_n.

3) conditions:It specifies the conditions that must be fulfilled for execution of UPDATE stateme.

Oracle Update Example: (Update single column)

This example will update the supplier_name as "Kingfisher" where "supplier_id" is 2.

Oracle Update Example: (Update multiple columns)

The following example specifies how to update multiple columns in a table. In this example, two columns supplier_name and supplier_address is updated by a single statement.


1 row(s) updated.
0.06 seconds

Oracle Update Example: (By selecting records from another table)


2 row(s) updated.
0.02 seconds

Here, the customers table is updated by fetching the data from "suppliers" table.

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