Question

>>> idx = np.argmax(result.ravel()) # ravel to get the 1D maximum point
>>> maxy, maxx = np.unravel_index(idx, data.shape) # get 2D coordinates of idx

Answer 1

USE master
GO

DECLARE @sql VARCHAR(MAX) =

'
USE [?];

SELECT 
    DB_NAME(database_id) Database_Name, o.name 
  , indexname = i.name 
  , i.index_id 
  , reads = user_seeks + user_scans + user_lookups 
  , writes = user_updates 
  , rows = ( SELECT SUM(p.rows) FROM sys.partitions p WHERE p.index_id = s.index_id AND s.object_id = p.object_id ) 
  , CASE WHEN s.user_updates < 1 THEN 100 ELSE 1.00 * ( s.user_seeks + s.user_scans + s.user_lookups ) / s.user_updates END AS reads_per_write 
  , ''DROP INDEX '' + QUOTENAME(i.name) + '' ON '' + QUOTENAME(c.name) + ''.'' + QUOTENAME(OBJECT_NAME(s.object_id)) AS ''drop statement'' 
 FROM sys.dm_db_index_usage_stats s 
 INNER JOIN sys.indexes i ON i.index_id = s.index_id AND s.object_id = i.object_id 
 INNER JOIN sys.objects o ON s.object_id = o.object_id 
 INNER JOIN sys.schemas c ON o.schema_id = c.schema_id 
 WHERE OBJECTPROPERTY(s.object_id, ''IsUserTable'') = 1 
 AND s.database_id = DB_ID() 
 AND i.type_desc = ''nonclustered'' 
 AND i.is_primary_key = 0 
 AND i.is_unique_constraint = 0 
 AND ( SELECT SUM(p.rows) FROM sys.partitions p WHERE p.index_id = s.index_id AND s.object_id = p.object_id ) > 10000 ORDER BY reads_per_write ASC'

 EXEC sp_msforeachdb @sql

如何让它运行在服务器上的所有数据库中

1 个答案: