SQL Server: Date and Time Data Types (Size and Ranges)


Thank you for this reference, whomever made this chart!

Tip: DateTime2(3) has the same number of digits as DateTime but uses 7 bytes of storage instead of 8 bytes (SQLHINTS- DateTime Vs DateTime2).


SQL Server: What is Data Warehousing?

A data warehouse is the main repository of a company’s historical data.

Data warehouses can contain a variety of data that presents a coherent picture of the business’s conditions at a point in time.

The main factor of using a data warehouse is that analysts can perform complex queries (data mining) on the information without slowing down the production database servers.

TempDB Best Practices

TempDB Best Practices

  1. TempDB should have as many data files as there are cores available to SQL Server, but only up to 8 data files. Too many TempDB data files can cause contention. Recommendation: Create 8 files and test from there on.
  2. TempDB should only have 1 log file. Extra log files will improve performance as they are written to sequentially.
  3. The data files for TempDB should all be the same size.
  4. TempDB data files and TempDB log files should be on separate disks.
  5. TempDB files should be on the fastest disks.