What is a COLLATE in SQL?

Posted on by Emilia Duggan

What is a COLLATE in SQL?

A collation specifies the bit patterns that represent each character in a dataset. Collations also determine the rules that sort and compare data. SQL Server supports storing objects that have different collations in a single database.

What does COLLATE SQL_Latin1_General_CP1_CI_AS mean?

The SQL_Latin1_General_CP1_CI_AS collation is a SQL collation and the rules around sorting data for unicode and non-unicode data are different. The Latin1_General_CI_AS collation is a Windows collation and the rules around sorting unicode and non-unicode data are the same.

How do I COLLATE data in SQL?

You can specify collations for each character string column using the COLLATE clause of the CREATE TABLE or ALTER TABLE statement. You can also specify a collation when you create a table using SQL Server Management Studio. If you do not specify a collation, the column is assigned the default collation of the database.

What encoding is SQL_Latin1_General_CP1_CI_AS?

First, SQL_Latin1_General_CP1_CI_AS is a strange mix of CP-1252 and UTF-8. The basic characters are CP-1252, so this is why all I had to do was UTF-8 and everything worked.

Why do we use collate in SQL?

Collations in SQL Server provide sorting rules, case, and accent sensitivity properties to data. A collation defines bit patterns that represent each character in metadata of database. SQL Server supports storing objects that have different collations in database.

What is Latin1_General?

Latin1_General is the culture / locale. For NCHAR , NVARCHAR , and NTEXT data this determines the linguistic rules used for sorting and comparison. For CHAR , VARCHAR , and TEXT data (columns, literals, and variables) this determines the: linguistic rules used for sorting and comparison.

Is Latin1_General_CI_AS case sensitive?

So for example, Latin1_General_CI_AS is case-insensitive and accent-sensitive.

What is Collation used in a SQL Server?

Server Connection Collation – There connection between PHP and MySQL daemon

  • Default Collation – The databases has a default collation
  • Table Collation – Tables in the database can have a specific collation set which does not have to be the default collation.

    • How to choose collation of SQL Server database?

    Note: I assume that you have an active Azure SQL DB.

  • Export the Azure SQL database in BACPAC format
  • Install Microsoft SQL Server Data-Tier Application Framework (18.1)
  • Modify model.xml file configuration
  • Use sqlpackage.exe to deploy the Azure database with updated collation
  • Verify the database collation

    • How to change SQL Server Collation after installation?

    Make sure you have all the information or scripts needed to re-create your user databases and all the objects in them.

  • Export all your data using a tool such as the bcp Utility.
  • Drop all the user databases.
  • Rebuild the master database specifying the new collation in the SQLCOLLATION property of the setup command.

    • What is the purpose of using collate in a query?

    Creating or altering a database. You can use the COLLATE clause of the CREATE DATABASE or ALTER DATABASE statement to specify the default collation of the database.

  • Creating or altering a table column.
  • Casting the collation of an expression.