/*==================================================================================
Curso: SQL SERVER 2019
https://www.udemy.com/course/draft/3957796/?referralCode=FB10D369E786D9FE8A48

Instrutor: Sandro Servino
https://www.linkedin.com/in/sandroservino/?originalSubdomain=pt
https://filiado.wixsite.com/sandroservino

ATIVIDADES ROTINEIRAS BÁSICAS DO DBA
PERFORMANCE, Jobs para Atualizar as Estatísticas e Desfragmentar os Indices
e incriveis Free Scripts do Ola Hallengren.
==================================================================================*/

-- Exemplo codigo para verificar fragmentacao dos indices
-- https://www.sqlshack.com/

SELECT S.name as 'Schema',
T.name as 'Table',
I.name as 'Index',
DDIPS.avg_fragmentation_in_percent,
DDIPS.page_count
FROM sys.dm_db_index_physical_stats (DB_ID(), NULL, NULL, NULL, NULL) AS DDIPS
INNER JOIN sys.tables T on T.object_id = DDIPS.object_id
INNER JOIN sys.schemas S on T.schema_id = S.schema_id
INNER JOIN sys.indexes I ON I.object_id = DDIPS.object_id
AND DDIPS.index_id = I.index_id
WHERE DDIPS.database_id = DB_ID()
and I.name is not null
AND DDIPS.avg_fragmentation_in_percent > 0
ORDER BY DDIPS.avg_fragmentation_in_percent desc

-- Exemplo de desframentar indices com opcao de Reorganize e Rebuild

USE CLIENTES;
GO
-- Reorganize all indexes on the CUSTOMER table.
ALTER INDEX ALL ON customer
REORGANIZE ;
GO

USE CLIENTES;
GO
ALTER INDEX ALL ON customer
REBUILD WITH (FILLFACTOR = 100, SORT_IN_TEMPDB = ON,
ONLINE=ON);
GO

-- Agora Vamos incluir a opcao de update statistics e rebuild index em um job e depois criar um 
-- plano de manutencao com wizard

-- E VAMOS BAIXAR ESTES INCRIVEIS SCRIPTS PARA REALIZAR ALGUNS TRABALHOS IMPORTANTES DE UM DBA PROFISSIONAL

https://ola.hallengren.com/