从这里的AWS指南:
SELECT ecs.state_name, f.feature_name, f.feature_class
FROM s3_east_coast_states ecs
JOIN ddb_features f ON ecs.state_alpha = f.state_alpha
WHERE ecs.state_name LIKE 'New%';
这绝对是一种加入。但是当我运行一个连接:
SELECT * FROM "division-allocations-dev" da JOIN "branch-division-dev