How subquery works in sql?
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Is null operator in sql?
Explain two virtual tables available at the time of database trigger execution.
How would you hide a table in sql. ie the table can be only visible to its maker?
What is trigger types in sql?
How to add a column ‘salary’ to a table employee_details?
How do I view tables in sql developer?
one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows only how should u write query?
Enlist some predefined exceptions?
What is sql mysql pl sql oracle?
What is a merge query?
how to create a database in oracle?please gve anser with example
What is mdb stand for?