How Can I Effectively Use a WHERE IN Statement with Multiple Values?

Using a WHERE IN Statement Effectively

The WHERE IN statement is essential for matching records based on a specified set of values. However, constructing it properly can be challenging.

If you're trying to use:

WHERE obj IN (?)

You may encounter errors if the number of provided values doesn't match the number of parameters. To resolve this:

statement = "SELECT * FROM tab WHERE obj IN ({0})".format(', '.join(['?'] * len(list_of_vars)))
c.execute(statement, list_of_vars)

In this approach, we dynamically generate a statement with the correct number of parameter placeholders using '.join()' and '.format()'.

Alternatively, for a more efficient approach with large variable lists, consider using a temporary table. Join the temporary table with your main table instead of using the IN clause with bind parameters. This optimization improves performance by reducing the number of database binds required.

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