What are triggers and its types?
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What are the properties of a transaction?
How to find 3rd highest salary of an employee from the employee table in sql?
Explain what is sql*plus?
What is graph sql?
What is difference between a Cursor declared in a procedure and Cursor declared in a package specification ?
What are the query optimization techniques?
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?
How to return multiple records from procedure?
Do ddl statements need commit?
Can delete statement be rollbacked?
What is primary key in db?
What is the difference between sql and mysql?