Spróbuj tego - podaje nazwę tabeli i liczbę wierszy:
SELECT
t.NAME AS TableName,
SUM(p.rows) AS [RowCount]
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.OBJECT_ID = i.object_id
INNER JOIN
sys.partitions p ON i.object_id = p.OBJECT_ID AND i.index_id = p.index_id
WHERE
i.index_id <= 1
GROUP BY
t.NAME, i.object_id, i.index_id, i.name
ORDER BY
SUM(p.rows) DESC
Pokazuje wszystkie tabele i ich liczbę wierszy na jednym wyjściu.