How many types of triggers are there in pl sql?

0 Answers  

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i have table T!. A B C D NULL 1 2 3 4 NULL 5 6 7 8 NULL 9 10 11 12 NULL. I WANT COUNT OF NULL VALUES IN TABLE. WRITE A QUERY.

14 Answers   iGate, Wipro,

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Does mysql_real_escape_string prevent sql injection?

0 Answers  

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What is a database event trigger?

0 Answers  

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Difference between IN and EXISTS

4 Answers   Nous, Polaris,

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a. Can you delete data from a View. b. If Yes, can you delete it if there are multiple tables c. If No, can you delete if there is single source table which is joining.

4 Answers   CGI, IBM,

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what is a cursor

9 Answers   IBM, TCS, Wipro,

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Why do we go for stored procedures?

0 Answers  

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write a query to display diference between two dates in sql server

2 Answers  

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What is clustered, non-clustured and unique index. How many indexes can be created on a table ?

3 Answers   TCS,

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How do you use collections in procedure to return the resultset?

0 Answers  

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what is a foreign key ? : Sql dba

0 Answers  

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