General information
Category:
Databases,Tables, Views, Indexing and SQL syntax
>1. 1.query is slower than 2.query. Why ?
Because actually creating the file on disk is the slowest part in this case, and creating a table with one field is a lot faster than creating a table with a lot of fields.
>2. Rushmore optimization of second query is executed wrongly. Why ?
Why do you say that? On a quick glance, it looked right to me.
>3. How can I solve rushmore optimization problem ?
What do you mean?
Tamar
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