Query Inside Loop (ARCH8064)
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Key kotlin.orm.query-inside-loop · Severity warning · Category orm
Flags ad-hoc queries (jdbcTemplate.query, entityManager.createQuery, execSQL) issued inside a loop body - broader than the repository N+1 rule.
Incorrect
Section titled “Incorrect”for (id in ids) jdbc.queryForObject(sql, id)Correct
Section titled “Correct”jdbc.query(sqlWithIn, ids)Batch the query (IN clause, a join) before the loop.