Selceting and updating records oracle farmersdatingservice com

(DBMS_UTILITY.get_time - l_start) selceting and updating records oracle-61 (DBMS_UTILITY.get_time - l_start)

The Oracle UPDATE statement is used to update existing records in a table in an Oracle database.So, here is a slightly different formulation: drop table Random_numbers; create table random_numbers ( Product_code VARCHAR2(40), Item_code VARCHAR2(40) ); insert into random_numbers(Product_code) values(1); insert into random_numbers(Product_code) values(2); insert into random_numbers(Product_code) values(3); insert into RANDOM_NUMBERS (ITEM_CODE) select RANDOM_NUMBERS.I have a table with a lot of records (could be more than 500 000 or 1 000 000).I'll change the code to generate a proper SQL UPDATE statement, as in the accepted answer.That is possible, but is extraordinary that 1 M rows should take so long to update a single column.You may wish to update records in one table based on values in another table.