Question

我需要列出集合数据库中的所有表，并为每个表列出CHECKSUM_AGG(BINARY_CHECKSUM(*))。

我知道我可以使用sp_tables列出所有表格，但我怎样才能将CHECKSUM_AGG(BINARY_CHECKSUM(*))用作最后一栏的额外列？

Answer 1

这似乎有用，但我不知道它会占用大量数据库需要多长时间：

if object_id('tempdb..#Tables') is not null
drop table #Tables;

select row_number() over (order by (select null)) as RowNum
        ,t.table_catalog as TableQualifier
        ,t.table_schema as TableOwner
        ,t.table_name as TableName
        ,case t.table_type
            when 'base table'
                then 'table'
            else t.table_type
        end as TableType
        ,null as TableChecksum
into #Tables
from information_schema.tables t
where t.table_type <> 'view';

declare @RowNum int;
declare @TableName nvarchar(100);
declare @TableChecksum bigint;
declare @SQL nvarchar(max);

while (select count(1) from #Tables where TableChecksum is null) > 0
begin
    select top 1 @RowNum = RowNum
                ,@TableName = TableName
                ,@SQL = 'select @TableChecksum = checksum_agg(binary_checksum(*)) from ' + @TableName
    from #Tables
    where TableChecksum is null;

    exec sp_executesql @SQL
                        ,N'@TableChecksum bigint output'
                        ,@TableChecksum output;

    update #Tables
    set TableChecksum = @TableChecksum 
    where RowNum = @RowNum;
end;

select *
from #Tables;

if object_id('tempdb..#Tables') is not null
drop table #Tables;

T-SQL选择列出集合数据库中的所有表，并为每个表列出CHECKSUM_AGG（BINARY_CHECKSUM（*））

1 个答案: