90 lines
2.1 KiB
Markdown
90 lines
2.1 KiB
Markdown
# commande SQL formation
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voir version:
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`select @@version`
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passer une base en mode single user
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`ALTER DATABASE [toto] SET SINGLE_USER WITH ROLLBACK IMMEDIATE`
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passer en mode multi user
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`alter database [toto] set MULTI_USER`
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voir la configuration
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`exec sp_configure`
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activé affichage des option avancé
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```SQL
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exec sp_configure 'show advanced options', 1;
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REconfigure;
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```
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autorisé la mise en autonomie partielle des bases
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```SQL
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exec sp_configure 'contained database authentication',1;
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reconfigure
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```
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```SQL
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exec sp_configure 'cost threshold for parallelism',12
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exec sp_configure 'max degree of parallelism',2
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exec sp_configure 'max server memory (MB)', 4096
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exec sp_configure'optimize for ad hoc workloads',1
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exec sp_configure'backup compression default',1
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exec sp_configure'backup checksum default',1
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exec sp_configure
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reconfigure
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```
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Backup
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```sql
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BACKUP DATABASE [toto] TO DISK = 'c:\toto.bak' with Compression
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```
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ajouter filegroup
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```SQL
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USE [master]
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GO
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ALTER DATABASE [DB_GRAND_HOTEL] ADD FILEGROUP [FG_DATA]
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GO
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ALTER DATABASE [DB_GRAND_HOTEL] ADD FILE ( NAME = N'FG_DATA_1', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\FD_DATA_1.mdf' , SIZE = 102400KB , FILEGROWTH = 65536KB ) TO FILEGROUP [FG_DATA]
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GO
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ALTER DATABASE [DB_GRAND_HOTEL] ADD FILE ( NAME = N'FG_DATA_2', FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL15.SQL2019FBIN2\MSSQL\DATA\FD_DATA_2.mdf' , SIZE = 102400KB , FILEGROWTH = 65536KB ) TO FILEGROUP [FG_DATA]
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GO
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```
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setter filegroup par default
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```SQL
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USE [DB_GRAND_HOTEL]
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GO
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IF NOT EXISTS (SELECT name FROM sys.filegroups WHERE is_default=1 AND name = N'FG_DATA') ALTER DATABASE [DB_GRAND_HOTEL] MODIFY FILEGROUP [FG_DATA] DEFAULT
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GO
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```
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modifier taille de fichier
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```SQL
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USE [DB_GRAND_HOTEL]
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GO
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DBCC SHRINKFILE (N'DB_GRAND_HOTEL' , 10)
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GO
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USE [master]
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GO
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ALTER DATABASE [DB_GRAND_HOTEL] MODIFY FILE ( NAME = N'DB_GRAND_HOTEL_log', SIZE = 102400KB )
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GO
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```
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voir nombre de page utilisé et temps
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```SQL
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SET STATISTCS IO ON
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SET STATISTCS TIME ON
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```
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