Updating a table in oracle best online dating sites serious relationships


19-Nov-2017 23:05

updating a table in oracle-9

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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.delete from emp where empno=102; If you don’t mention the WHERE condition then all rows will be deleted. For example suppose we are having sales and sales_history table with the following structure.Suppose we want to delete all employees whose salary is above 2000. delete from emp where salary 2000; To delete all rows from emp table. Now we want to update sales_history table from sales table i.e.

updating a table in oracle-54

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These statements do not implicitly commit the current transaction. Manager’, ’8-aug-1998’,2000); If you want to add a new row by supplying values for some columns not all the columns then you have to mention the name of the columns in insert statements.But, the syntax example above might not show the whole truth, since we can have a situation like this: In the expanded version of our UPDATE syntax above, the value that we want to update column1 with, actually comes from a different table.



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