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A Gentle Introduction to
C++ Programming

Tutorial: Changing a table using parameters

 

You create a PreparedStatement with an SQL statement that includes question marks. You can set the value of these parameters then execute the statement. 

PreparedStatement ps = c.prepareStatement("DELETE FROM mega WHERE name=?");
ps.setString(1,"United Kingdom");
ps.execute();

For extra points use addBatch() and executeBatch(). See INSERT a batch for an example.

1. Using INSERT .. VALUE


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In this program a temporary table mega is created. You must write the routine changeMega that adds a row to the table.

Add the new country 'Neverland' with a population of 10.

2. Gotta go


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Delete the countries that have been condemned.

3. Updating values


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The String pops includes changes to be made to the table mega.

You will need to build and execute update statements such as: 

UPDATE mega
 SET population=9200000
 WHERE name='Bolivia'

Update the table according to details given. Also, remove the println statements.