Databases

SQL data definition clauses that appear in multiple SQL statements. allocate_extent_clause constraints deallocate_unused_clause file_...

1)What are the key differences between a corelated query and sub query? In the Corelated query for every instance of outer query,inner qu...

1)How to display "Experience of employee"?e.g. 3 years 4 months 19 days? select floor((trunc(sysdate) - to_date('01-JAN-01...

checking that the string does not contain any special character other then '_': SELECT NVL(LENGTH(LTRIM(RTRIM(TRANSLATE('RAGH...

Testing