oracle-12c

Oracle Database 12c, now TRUNCATE statement is enhanced with  CASCADE option. This is pretty useful, that you need not worry about truncating all “child” tables before truncating the parent. With the CASCADE option, Oracle will truncate all tables with a foreign key constraint to the table being truncated. The foreign key must be ENABLED and … Read more

Oracle Database 12c now includes a row_limiting_clause in the SELECT statement. This new clause limits the rows returned in a more meaningful and effective way, compared to the methods available in previous releases [using ROWNUM or using Top-N rows using subqueries or using analytic functions like RANK or DENSE_RANK]. The syntax for the new clause … Read more