id, parent_dataset_id, name, description, dataset_type, category, path, format, schema_info, size_bytes, file_count, record_count, retention_days, tags, metadata, status, is_public, is_featured, version, created_at, updated_at, created_by, updated_by d.id AS id, d.parent_dataset_id AS parent_dataset_id, d.name AS name, d.description AS description, d.dataset_type AS dataset_type, d.category AS category, d.path AS path, d.format AS format, d.schema_info AS schema_info, d.size_bytes AS size_bytes, d.file_count AS file_count, d.record_count AS record_count, d.retention_days AS retention_days, d.tags AS tags, d.metadata AS metadata, d.status AS status, d.is_public AS is_public, d.is_featured AS is_featured, d.version AS version, d.created_at AS created_at, d.updated_at AS updated_at, d.created_by AS created_by, d.updated_by AS updated_by SELECT FROM t_dm_datasets WHERE id = #{id} SELECT FROM t_dm_datasets WHERE name = #{name} LIMIT 1 SELECT FROM t_dm_datasets WHERE status = #{status} ORDER BY updated_at DESC SELECT FROM t_dm_datasets WHERE created_by = #{createdBy} ORDER BY created_at DESC SELECT FROM t_dm_datasets WHERE dataset_type = #{typeCode} ORDER BY created_at DESC SELECT DISTINCT FROM t_dm_datasets d JOIN t_dm_dataset_tags dt ON d.id = dt.dataset_id JOIN t_dm_tags t ON t.id = dt.tag_id WHERE t.name IN #{name} ORDER BY d.created_at DESC SELECT FROM t_dm_datasets WHERE name LIKE CONCAT('%', #{keyword}, '%') OR description LIKE CONCAT('%', #{keyword}, '%') ORDER BY created_at DESC SELECT DISTINCT FROM t_dm_datasets d LEFT JOIN t_dm_dataset_tags dt ON d.id = dt.dataset_id LEFT JOIN t_dm_tags t ON t.id = dt.tag_id AND d.dataset_type = #{typeCode} AND d.status = #{status} AND (d.name LIKE CONCAT('%', #{keyword}, '%') OR d.description LIKE CONCAT('%', #{keyword}, '%')) AND t.name IN #{n} ORDER BY d.created_at DESC SELECT COUNT(DISTINCT d.id) FROM t_dm_datasets d LEFT JOIN t_dm_dataset_tags dt ON d.id = dt.dataset_id LEFT JOIN t_dm_tags t ON t.id = dt.tag_id AND d.dataset_type = #{typeCode} AND d.status = #{status} AND (d.name LIKE CONCAT('%', #{keyword}, '%') OR d.description LIKE CONCAT('%', #{keyword}, '%')) AND t.name IN #{n} DELETE FROM t_dm_datasets WHERE id = #{id} SELECT (SELECT COUNT(*) FROM t_dm_datasets) AS total_datasets, (SELECT COALESCE(SUM(size_bytes), 0) FROM t_dm_datasets) AS total_size, (SELECT COUNT(*) FROM t_dm_dataset_files WHERE metadata IS NULL OR JSON_EXTRACT(metadata, '$.derived_from_file_id') IS NULL) AS total_files