Microsoft SQL Server
- Getting started with Microsoft SQL Server
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- Advanced options
- Aggregate Functions
- Alias Names in Sql Server
- Analyzing a Query
- Backup and Restore Database
- Basic DDL Operations in MS SQL Server
- bcp (bulk copy program) Utility
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- CLUSTERED COLUMNSTORE
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- MERGE
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- Schemas
- SCOPE_IDENTITY()
- SELECT statement
- Basic SELECT from table
- Filter groups using HAVING clause
- Filter rows using WHERE clause
- Group result using GROUP BY
- Pagination using OFFSET FETCH
- Returning only first N rows
- SELECT without FROM (no data souce)
- Sort results using ORDER BY
- Sequences
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- SQL Server Evolution through different versions (2000 - 2016)
- SQL Server Management Studio (SSMS)
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- Storing JSON in SQL tables
- String Aggregate functions in SQL Server
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- The STUFF Function
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- Use of TEMP Table
- User Defined Table Types
- Variables
- Views
- WHILE loop
- Window functions
- With Ties Option
Microsoft SQL Server SELECT statement Group result using GROUP BY
Example
GROUP BY clause groups rows by some value:
SELECT type, count(*) as c
FROM sys.objects
GROUP BY type
You can apply some function on each group (aggregate function) to calculate sum or count of the records in the group.
| type | c |
|---|---|
| SQ | 3 |
| S | 72 |
| IT | 16 |
| PK | 1 |
| U | 5 |
