#[cfg(test)]
mod tests {
use crate::to_sql_string_test;
to_sql_string_test!(
test_update_single_column,
"UPDATE employees SET salary = 55000"
);
to_sql_string_test!(
test_update_multiple_columns,
"UPDATE employees SET salary = 60000, name = 'John Smith'"
);
to_sql_string_test!(
test_update_with_where,
"UPDATE employees SET salary = 60000 WHERE id = 1"
);
to_sql_string_test!(
test_update_with_multi_where,
"UPDATE employees SET salary = 65000 WHERE department_id = 3 AND salary < 50000"
);
to_sql_string_test!(
test_update_with_subquery_set,
"UPDATE employees SET department_id = (SELECT id FROM departments WHERE name = 'Sales') WHERE id = 1"
);
to_sql_string_test!(
test_update_with_subquery_where,
"UPDATE employees SET salary = 70000 WHERE department_id IN (SELECT id FROM departments WHERE name = 'Marketing')"
);
to_sql_string_test!(
test_update_with_exists,
"UPDATE employees SET salary = 75000 WHERE EXISTS (SELECT 1 FROM orders WHERE orders.employee_id = employees.id AND orders.status = 'pending')"
);
to_sql_string_test!(
test_update_with_from,
"UPDATE employees SET salary = 80000 FROM departments WHERE employees.department_id = departments.id AND departments.name = 'Engineering'"
);
to_sql_string_test!(
test_update_with_returning,
"UPDATE employees SET salary = 60000 WHERE id = 1 RETURNING id, name, salary"
);
to_sql_string_test!(
test_update_with_expression,
"UPDATE employees SET salary = salary * 1.1 WHERE department_id = 2"
);
to_sql_string_test!(
test_update_with_null,
"UPDATE employees SET department_id = NULL WHERE id = 1"
);
to_sql_string_test!(
test_update_schema_qualified,
"UPDATE main.employees SET salary = 65000 WHERE id = 1"
);
to_sql_string_test!(
test_update_with_case,
"UPDATE employees SET salary = CASE WHEN salary < 50000 THEN 55000 ELSE salary * 1.05 END WHERE department_id = 3"
);
to_sql_string_test!(
test_update_with_like,
"UPDATE employees SET name = 'Updated' WHERE name LIKE 'J%'"
);
to_sql_string_test!(
test_update_with_on_conflict,
"INSERT INTO employees (id, name, salary) VALUES (1, 'John Doe', 50000) ON CONFLICT (id) DO UPDATE SET name = excluded.name, salary = excluded.salary"
);
}