Updating sql record


13-Sep-2016 22:40

In the next section we will take a closer look at ADO's batch updates, what they can offer you, and why they are so important.However, in this section you won't need them to solve the problem of updating a join, because in ADO, joins are naturally updatable.It is a general concept that encompasses lists, arrays, and other familiar datatypes.Each element has a unique subscript that determines its position in the collection.This statement provides a list of orders and the customers that placed those orders.The BDE considers any SQL join to be read-only because inserting, updating, and deleting rows in a join is ambiguous.

updating sql record-6

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It’s rare, in fact, that the data with which you are working is just a single value, so records and other composite datatypes are likely to figure prominently in your PL/SQL programs.

For example, should the insert of a row into the previous join result in a new product and also a new supplier, or just a new product?



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