Why triggers are used?
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Can we debug stored procedure?
suppose we have a table in which 200 rows. i want to find 101 row ? what the query.... and how we find 4th and 5th highest salary and 1 to 10 highest salary
Why is nosql good?
What is break?
Is clustered index a primary key?
Can we rollback delete command?
Why we use joins in sql?
IN A TABLE HAVE ONE COLUMN PRIMARY KEY..IT WILL NOT ALLOWS NULL VALUES AND DUPLICATE VALUES..INSTEAD OF PRIMARY KEY WHY CANT WE USE UNIQUE AND NOT NULL.THESE TWO ALSO DOESNT ACCEPT NULL VALUES IN NOT NULL AND UNIQUE DOESNT ACCEPT DUPLICATE VALUES? SO WHAT IS THE DIFEERENCE BETWEEN(UNIQUE,NOT NULL) AND PRIMARY KEY??????
How do I install sql?
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Which column in the user.triggers data dictionary view shows that the trigger is a pl/sql trigger?
Is and as keyword in pl sql?
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