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How do you delete data from a table?
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What is a trigger ?
11 Answers Accenture, BirlaSoft,
Why do we use %rowtype & %type in plsql?
Why does sql need a server?
What is implicit cursor in pl sql?
What is the difference between clustered and non-clustered index in sql?
Two Methods of retrieving SQL?
7 Answers Atiric Software, Microsoft, Oracle, TCS, Wipro,
column A column b | output 10 7 | 10 5 8 | 8 7 -9 | 7 3 5 | 5 0 6 | 6 Write a sql query to print such output.
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??????
What is difference between % ROWTYPE and TYPE RECORD ?
What do you mean by query optimization?
full outer join syntax
Why do we use view in sql?
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