--SQL Server 查询表的记录数

--one: 使用系统表.
SELECT object_name (i.id) TableName,
    rows as RowCnt
FROM sysindexes i
INNER JOIN sysObjects o
 ON (o.id = i.id AND o.xType = 'U ')
WHERE indid < 2
ORDER BY TableName

--******************

--two: 使用未公开的过程 "sp_MSforeachtable "
CREATE TABLE #temp (TableName VARCHAR (255), RowCnt INT)
EXEC sp_MSforeachtable 'INSERT INTO #temp SELECT ''?'', COUNT(*) FROM ?'
SELECT TableName, RowCnt FROM #temp ORDER BY TableName
DROP TABLE #temp

--******************

-- three: 使用游标.cursor
SET NOCOUNT ON
DECLARE @tableName VARCHAR (255),
        @sql VARCHAR (300)
CREATE TABLE #temp (TableName VARCHAR (255), rowCnt INT)
DECLARE myCursor CURSOR FAST_FORWARD READ_ONLY FOR
 SELECT TABLE_NAME
 FROM INFORMATION_SCHEMA.TABLES
 WHERE TABLE_TYPE = 'base table '
OPEN myCursor
FETCH NEXT FROM myCursor INTO @tableName
WHILE @@FETCH_STATUS = 0
 BEGIN
 EXEC ( 'INSERT INTO #temp (TableName, rowCnt) SELECT ''' + @tableName + ''' as tableName, count(*) as rowCnt from ' + @tableName)
 FETCH NEXT FROM myCursor INTO @tableName
 END
SELECT TableName, RowCnt FROM #temp ORDER BY TableName
CLOSE myCursor
DEALLOCATE myCursor
DROP TABLE #temp