Check out example codes for "sql select all records from all tables where not empty". It will help you in understanding the concepts better.

Code Example 1

SELECT r.table_name, r.row_count, r.[object_id]
FROM sys.tables t
INNER JOIN (
    SELECT OBJECT_NAME(s.[object_id]) table_name, SUM(s.row_count) row_count, s.[object_id]
    FROM sys.dm_db_partition_stats s
    WHERE s.index_id in (0,1)
    GROUP BY s.[object_id]
) r on t.[object_id] = r.[object_id]
WHERE r.row_count > 0
ORDER BY r.table_name;

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