Question

我已经有了下面的查询来获取表的大小。然而，我只是为了获得有大小的前10名最大尺寸表。

怎么做？

select convert(varchar(30),o.name) AS table_name,
row_count(db_id(), o.id) AS row_count,
data_pages(db_id(), o.id, 0) AS pages,
data_pages(db_id(), o.id, 0) * (@@maxpagesize/1024) AS kbs
from sysobjects o
where type = 'U'
order by table_name

搜索类似的内容：select top 10 max(datapages) from sysobjects

编辑：

现在我还要获取索引的大小，在查询中添加sysindexes就足够了，还是应该像syscoments一样添加另一个系统表？

这样写它给我的顶级名称：

select top 10 convert(varchar(30),o.name) AS table_name,
row_count(db_id(), o.id) AS row_count,
data_pages(db_id(), o.id, 0) AS pages,
data_pages(db_id(), o.id, 0) * (@@maxpagesize/1024) AS kbs
from sysobjects o
where type = 'U'
order by table_name , kbs

这是抛出错误

select top 10 data_pages(db_id(), o.id, 0) * (@@maxpagesize/1024) AS kbs ,
convert(varchar(30),o.name) AS table_name,
row_count(db_id(), o.id) AS row_count,
data_pages(db_id(), o.id, 0) AS pages
from sysobjects o
where type = 'U'
order by  kbs , table_name

Answer 1

此查询适用于我的ASE 16.0系统：

fun toUpper(myChar) =
    exception invalidCharacter;
    if ord(myChar) >= ord(#"A") andalso ord(myChar) <= ord(#"Z") then myChar
    else
        if ord(myChar) >= ord(#"a") andalso ord(myChar) <= ord("z") then
            chr(ord(myChar) - (ord(#"a") - ord(#"A")));
        else raise invalidCharacter;

如何选择最大的前10（n）行？

1 个答案: