下面是一个动态SQL方法，它也提供了模式:

DECLARE @sql nvarchar(MAX)

SELECT
    @sql = COALESCE(@sql + ' UNION ALL ', '') +
        'SELECT
            ''' + s.name + ''' AS ''Schema'',
            ''' + t.name + ''' AS ''Table'',
            COUNT(*) AS Count
            FROM ' + QUOTENAME(s.name) + '.' + QUOTENAME(t.name)
    FROM sys.schemas s
    INNER JOIN sys.tables t ON t.schema_id = s.schema_id
    ORDER BY
        s.name,
        t.name

EXEC(@sql)

如果需要，将其扩展为在实例中运行所有数据库(连接到sys.databases)是很简单的。

下面的SQL语句将得到数据库中所有表的行数:

CREATE TABLE #counts
(
    table_name varchar(255),
    row_count int
)

EXEC sp_MSForEachTable @command1='INSERT #counts (table_name, row_count) SELECT ''?'', COUNT(*) FROM ?'
SELECT table_name, row_count FROM #counts ORDER BY table_name, row_count DESC
DROP TABLE #counts

输出将是一个表列表及其行数。

如果你只想要整个数据库的总行数，追加:

SELECT SUM(row_count) AS total_row_count FROM #counts

将获得整个数据库中总行数的单个值。

不要使用SELECT COUNT(*) FROM TABLENAME，因为这是一个资源密集型操作。应该使用SQL Server动态管理视图或系统目录来获取数据库中所有表的行数信息。

我会对弗雷德里克的方案做些小改动。我将使用sp_spaceused系统存储过程，它还将包括数据和索引大小。

declare c_tables cursor fast_forward for 
select table_name from information_schema.tables 

open c_tables 
declare @tablename varchar(255) 
declare @stmt nvarchar(2000) 
declare @rowcount int 
fetch next from c_tables into @tablename 

while @@fetch_status = 0 
begin 

    select @stmt = 'sp_spaceused ' + @tablename 

    exec sp_executesql @stmt

    fetch next from c_tables into @tablename 

end 

close c_tables 
deallocate c_tables 

SELECT 
    sc.name +'.'+ ta.name TableName, SUM(pa.rows) RowCnt
FROM 
    sys.tables ta
INNER JOIN sys.partitions pa
    ON pa.OBJECT_ID = ta.OBJECT_ID
INNER JOIN sys.schemas sc
    ON ta.schema_id = sc.schema_id
WHERE ta.is_ms_shipped = 0 AND pa.index_id IN (1,0)
GROUP BY sc.name,ta.name
ORDER BY SUM(pa.rows) DESC

短而甜

sp_MSForEachTable 'DECLARE @t AS VARCHAR(MAX); 
SELECT @t = CAST(COUNT(1) as VARCHAR(MAX)) 
+ CHAR(9) + CHAR(9) + ''?'' FROM ? ; PRINT @t'

输出: