What is SQL Server filegroup?

Question

Filegroups are the physical files on your disc volumes that hold SQL Server's data and can be used for backup and administrative management purposes. The first thing to know are what types of files SQL Server uses: Primary Data Files. Secondary Data Files. Log Files. 17 янв. 2017 г.

What is difference between file and filegroup in SQL Server?

tl;dr; Filegroups are a logical construct used to separate tables and indexes from each other, files are the physical construct used to store information (log & data) about the database.

What is the default filegroup SQL Server?

By default, the primary filegroup is the default filegroup, so all new objects are placed in this filegroup.

How do I find the filegroup in SQL Server?

How to check SQL Server Filegroup file sizes1SELECT sdf. name AS [File_Name],2sdf. size /128 AS [Size_MB],3fg. name AS [FileGroup_Name],4sdf.physical_name as [File_physical_name]5FROM sys.database_files sdf.6INNER JOIN.7sys.filegroups fg.8ON sdf.data_space_id=fg.data_space_id.How to check SQL Server Filegroup file sizes

What is the purpose of secondary data file?

Secondary data files are optional and can be used to spread data across multiple files/disks by putting each file on a different disk drive. SQL Server databases can have multiple data and log files, but only one primary data file.

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