Ms sql updating multiple rows

23 Dec

Once the keys are decided it is possible to define them in the system using constraints along with field value validation.

7782 CLARK MANAGER 7839 2572.50 10 7839 KING PRESIDENT 5500.00 10 7934 MILLER CLERK 7782 920.00 10 7566 JONES MANAGER 7839 3123.75 20 7499 ALLEN SALESMAN 7698 1600.00 300.00 30 7654 MARTIN SALESMAN 7698 1312.50 1400.00 30 7658 CHAN ANALYST 7566 3450.00 20 7654 MARTIN SALESMAN 7698 1312.50 1400.00 30 1. Create a table in Oracle, by any name, but should match columns specified in fixed length file.

You can use this set of guidelines, fork them or make your own - the key here is that you pick a style and stick to it.

When declaring schema information it is also important to maintain human readable code.After you have executed the above command SQL Loader will shows you the output describing how many rows it has loaded.You can simultaneously load data into multiple tables in the same session.They can quickly become very difficult to read and reason about though so it is important that a standard set of guidelines are followed.Deciding the column(s) that will form the keys in the definition should be a carefully considered activity as it will effect performance and data integrity.