如何查询我的 sql server 以仅获取数据库的大小？
我用这个：
use "MY_DB" exec sp_spaceused
我懂了 ：
database_name database_size unallocated space My_DB 17899.13 MB 5309.39 MB
它返回了我不需要的几个列，也许有一个技巧可以从这个存储过程中选择 database_size 列？
我也试过这段代码：
SELECT DB_NAME(database_id) AS DatabaseName, Name AS Logical_Name, Physical_Name, (size * 8) / 1024 SizeMB FROM sys.master_files WHERE DB_NAME(database_id) = 'MY_DB'
它给了我这个结果：
DatabaseName Logical_Name Physical_Name SizeMB MY_DB MY_DB D:\MSSQL\Data\MY_DB.mdf 10613 MY_DB MY_DB_log D:\MSSQL\Data\MY_DB.ldf 7286
所以我写了这个：
SELECT SUM(SizeMB) FROM ( SELECT DB_NAME(database_id) AS DatabaseName, Name AS Logical_Name, Physical_Name, (size * 8) / 1024 SizeMB FROM sys.master_files WHERE DB_NAME(database_id) = 'MY_DB' ) AS TEMP
我得到：1183
所以它有效，但也许有一种正确的方法可以得到这个？
试试这个——
询问：
SELECT database_name = DB_NAME(database_id) , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2)) , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2)) , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2)) FROM sys.master_files WITH(NOWAIT) WHERE database_id = DB_ID() -- for current db GROUP BY database_id
输出：
-- my query name log_size_mb row_size_mb total_size_mb -------------- ------------ ------------- ------------- xxxxxxxxxxx 512.00 302.81 814.81 -- sp_spaceused database_name database_size unallocated space ---------------- ------------------ ------------------ xxxxxxxxxxx 814.81 MB 13.04 MB
功能：
ALTER FUNCTION [dbo].[GetDBSize] ( @db_name NVARCHAR(100) ) RETURNS TABLE AS RETURN SELECT database_name = DB_NAME(database_id) , log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2)) , row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2)) , total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2)) FROM sys.master_files WITH(NOWAIT) WHERE database_id = DB_ID(@db_name) OR @db_name IS NULL GROUP BY database_id
2016 年 1 月 22 日更新：
显示有关大小、可用空间、上次数据库备份的信息
IF OBJECT_ID('tempdb.dbo.#space') IS NOT NULL DROP TABLE #space CREATE TABLE #space ( database_id INT PRIMARY KEY , data_used_size DECIMAL(18,2) , log_used_size DECIMAL(18,2) ) DECLARE @SQL NVARCHAR(MAX) SELECT @SQL = STUFF(( SELECT ' USE [' + d.name + '] INSERT INTO #space (database_id, data_used_size, log_used_size) SELECT DB_ID() , SUM(CASE WHEN [type] = 0 THEN space_used END) , SUM(CASE WHEN [type] = 1 THEN space_used END) FROM ( SELECT s.[type], space_used = SUM(FILEPROPERTY(s.name, ''SpaceUsed'') * 8. / 1024) FROM sys.database_files s GROUP BY s.[type] ) t;' FROM sys.databases d WHERE d.[state] = 0 FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'), 1, 2, '') EXEC sys.sp_executesql @SQL SELECT d.database_id , d.name , d.state_desc , d.recovery_model_desc , t.total_size , t.data_size , s.data_used_size , t.log_size , s.log_used_size , bu.full_last_date , bu.full_size , bu.log_last_date , bu.log_size FROM ( SELECT database_id , log_size = CAST(SUM(CASE WHEN [type] = 1 THEN size END) * 8. / 1024 AS DECIMAL(18,2)) , data_size = CAST(SUM(CASE WHEN [type] = 0 THEN size END) * 8. / 1024 AS DECIMAL(18,2)) , total_size = CAST(SUM(size) * 8. / 1024 AS DECIMAL(18,2)) FROM sys.master_files GROUP BY database_id ) t JOIN sys.databases d ON d.database_id = t.database_id LEFT JOIN #space s ON d.database_id = s.database_id LEFT JOIN ( SELECT database_name , full_last_date = MAX(CASE WHEN [type] = 'D' THEN backup_finish_date END) , full_size = MAX(CASE WHEN [type] = 'D' THEN backup_size END) , log_last_date = MAX(CASE WHEN [type] = 'L' THEN backup_finish_date END) , log_size = MAX(CASE WHEN [type] = 'L' THEN backup_size END) FROM ( SELECT s.database_name , s.[type] , s.backup_finish_date , backup_size = CAST(CASE WHEN s.backup_size = s.compressed_backup_size THEN s.backup_size ELSE s.compressed_backup_size END / 1048576.0 AS DECIMAL(18,2)) , RowNum = ROW_NUMBER() OVER (PARTITION BY s.database_name, s.[type] ORDER BY s.backup_finish_date DESC) FROM msdb.dbo.backupset s WHERE s.[type] IN ('D', 'L') ) f WHERE f.RowNum = 1 GROUP BY f.database_name ) bu ON d.name = bu.database_name ORDER BY t.total_size DESC
database_id name state_desc recovery_model_desc total_size data_size data_used_size log_size log_used_size full_last_date full_size log_last_date log_size ----------- -------------------------------- ------------ ------------------- ------------ ----------- --------------- ----------- -------------- ----------------------- ------------ ----------------------- --------- 24 StackOverflow ONLINE SIMPLE 66339.88 65840.00 65102.06 499.88 5.05 NULL NULL NULL NULL 11 AdventureWorks2012 ONLINE SIMPLE 16404.13 15213.00 192.69 1191.13 15.55 2015-11-10 10:51:02.000 44.59 NULL NULL 10 locateme ONLINE SIMPLE 1050.13 591.00 2.94 459.13 6.91 2015-11-06 15:08:34.000 17.25 NULL NULL 8 CL_Documents ONLINE FULL 793.13 334.00 333.69 459.13 12.95 2015-11-06 15:08:31.000 309.22 2015-11-06 13:15:39.000 0.01 1 master ONLINE SIMPLE 554.00 492.06 4.31 61.94 5.20 2015-11-06 15:08:12.000 0.65 NULL NULL 9 Refactoring ONLINE SIMPLE 494.32 366.44 308.88 127.88 34.96 2016-01-05 18:59:10.000 37.53 NULL NULL 3 model ONLINE SIMPLE 349.06 4.06 2.56 345.00 0.97 2015-11-06 15:08:12.000 0.45 NULL NULL 13 sql-format.com ONLINE SIMPLE 216.81 181.38 149.00 35.44 3.06 2015-11-06 15:08:39.000 23.64 NULL NULL 23 users ONLINE FULL 173.25 73.25 3.25 100.00 5.66 2015-11-23 13:15:45.000 0.72 NULL NULL 4 msdb ONLINE SIMPLE 46.44 20.25 19.31 26.19 4.09 2015-11-06 15:08:12.000 2.96 NULL NULL 21 SSISDB ONLINE FULL 45.06 40.00 4.06 5.06 4.84 2014-05-14 18:27:11.000 3.08 NULL NULL 27 tSQLt ONLINE SIMPLE 9.00 5.00 3.06 4.00 0.75 NULL NULL NULL NULL 2 tempdb ONLINE SIMPLE 8.50 8.00 4.50 0.50 1.78 NULL NULL NULL NULL
