What is compound trigger?

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what is the different between unique+not null & primary key,

4 Answers  

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How do you update a table in sql?

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What is sqlca in powerbuilder?

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When you have to use a default "rollback to" savepoint of plvlog?

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what is heap table? : Sql dba

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name 3 ways to get an accurate count of the number of records in a table? : Sql dba

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I need to write a simple query,which one is better select statement or stored procedure?and why?

2 Answers   iGate,

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Can a primary key be a foreign key?

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Is postgresql a server?

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How do I view a procedure in sql?

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SELECT category, type, AVG(price) FROM products GROUP BY category, type ORDER BY 1, 2 If there are three distinct categories in the "products" table, and each one has five different types, how many rows are returned by the query above? 1. 1 row 2. 3 rows 3. 5 rows 4. 8 rows 5. 15 rows

3 Answers  

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