@a_horse_with_no_name: Oracle does not directly support the JOIN keyword in an UPDATE, but it allows UPDATE involving JOIN operations between table in at least 2 different ways, look at the accepted answer here: stackoverflow.com/questions/2446764/…You could create a trigger on table B that updates table A every time field_2 on table B is updated.The Oracle UPDATE statement is used to update existing records in a table in an Oracle database.There are 2 syntaxes for an update query in Oracle depending on whether you are performing a traditional update or updating one table with data from another table.Cursor declarations must appear after variable and condition declarations but before handler declarations.Also keep in mind that the cursor SELECT statement cannot have an INTO clause; it's strictly read-only.
SELECT can also be used to combine information from related tables into a single table.
You can also perform more complicated updates in Oracle.
You may wish to update records in one table based on values in another table.
In these type of situations, it is ideal to use a Update Cursor, than using the default read only one.
Consider the following table: Here is how you use the Update Cursor.