Use JDBI to execute basic SQL statements in JDBC samples

[ericharmeling]

Eric Harmeling (ericharmeling) commented:

@rafiss

Jira Issue: DOC-1032

[rafiss]

See #9998 for where this thought came from:

with vanilla JDBC you need to do

PreparedStatement p = connection.prepareStatement("DELETE from promo_codes WHERE code IN(?, ?, ?)");
p.setString(1, codeOne);
p.setString(2, codeTwo);
p.setString(3, codeThree);
p.executeUpdate(); 

The placeholder arguments are important. Using normal string concatenation leaves the code open to SQL injection, so we don't want to have string concatenation in our docs. But placeholders in JDBC are cumbersome. JDBI (https://jdbi.org/) lets you do something simpler:

handle.execute("DELETE from promo_codes WHERE code IN(?, ?, ?)", codeOne, codeTwo, codeThree);

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