原文:
查看数据库表的数据量和SIZE大小的脚本修正
在使用桦仔的分享一个SQLSERVER脚本（计算数据库中各个表的数据量和每行记录所占用空间）的脚本时，遇到下面一些错误
这个是因为这些表的Schema是Maint，而不是默认的dbo，造成下面这段SQL在执行EXEC sp_spaceused @tablename时出现
Msg 15009, Level 16, State 1, Procedure sp_spaceused, Line 75
The object 'xxxx' does not exist in database 'YourSQLDba' or is invalid for this operation.
DECLARE Info_cursor CURSOR
FOR
SELECT '[' + [name] + ']'
FROM sys.tables
WHERE type = 'U';
OPEN Info_cursor
FETCH NEXT FROM Info_cursor INTO @tablename
WHILE @@FETCH_STATUS = 0
BEGIN
INSERT INTO #tablespaceinfo
EXEC sp_spaceused @tablename
FETCH NEXT FROM Info_cursor
INTO @tablename
END
修正后的脚本如下所示
CREATE TABLE #tablespaceinfo
(
nameinfo VARCHAR(500) ,
rowsinfo BIGINT ,
reserved VARCHAR(20) ,
datainfo VARCHAR(20) ,
index_size VARCHAR(20) ,
unused VARCHAR(20)
)
DECLARE @tablename VARCHAR(255);
DECLARE Info_cursor CURSOR
FOR
SELECT '[' + s.[name] +']' +'.' + '[' + t.[name] + ']'
FROM sys.tables t
INNER JOIN sys.schemas s ON t.schema_id = s.schema_id
WHERE type = 'U';
OPEN Info_cursor
FETCH NEXT FROM Info_cursor INTO @tablename
WHILE @@FETCH_STATUS = 0
BEGIN
INSERT INTO #tablespaceinfo
EXEC sp_spaceused @tablename
FETCH NEXT FROM Info_cursor
INTO @tablename
END
CLOSE Info_cursor
DEALLOCATE Info_cursor
--创建临时表
CREATE TABLE [#tmptb]
(
TableName VARCHAR(50) ,
DataInfo BIGINT ,
RowsInfo BIGINT ,
Spaceperrow AS ( CASE RowsInfo
WHEN 0 THEN 0
ELSE CAST(DataInfo AS decimal(18,2))/CAST(RowsInfo AS decimal(18,2))
END ) PERSISTED
)
--插入数据到临时表
INSERT INTO [#tmptb]
( [TableName] ,
[DataInfo] ,
[RowsInfo]
)
SELECT [nameinfo] ,
CAST(REPLACE([datainfo], 'KB', '') AS BIGINT) AS 'datainfo' ,
[rowsinfo]
FROM #tablespaceinfo
ORDER BY CAST(REPLACE(reserved, 'KB', '') AS INT) DESC
--汇总记录
SELECT [tbspinfo].* ,
[tmptb].[Spaceperrow] AS '每行记录大概占用空间（KB）'
FROM [#tablespaceinfo] AS tbspinfo ,
[#tmptb] AS tmptb
WHERE [tbspinfo].[nameinfo] = [tmptb].[TableName]
ORDER BY CAST(REPLACE([tbspinfo].[reserved], 'KB', '') AS INT) DESC
DROP TABLE [#tablespaceinfo]
DROP TABLE [#tmptb]
