What does explain show for the two queries?

On Wed, 4 Jul 2001, Michel Soto wrote:

> Hi,
> 
> Can  someone explain why the following query takes  1 second when using 
> LIKE and takes 30 seconds when replacing LIKE by = in the WHERE ?
> - instance_Attribute  has 45 rows and Influence has 5 rows.
> - Postgresql 7.1


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