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Best data type to store Active Directory Nullable GUID

I have a table name Employees,inside Sql Server 2008 r2. the table contain the following columns:- UserID. it is the Primary key, and it is auto generated by the DB. GUID. which will store the ...
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SQL Server: Create New GUID Values for Existing Index

I have an existing table with about 6 million rows. The relevant columns are: ID int not null PK Key uniqueidentifier not null Read/write on this table by Key lookup is probably something like 100 ...
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Almost sequential GUIDs vs random GUIDs?

I'm looking at using GUIDs (UUID) as primary key with clustered index in SQL Server. In my webb-app I have many clients who will create items client side in javascript and save them only now and ...
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Converting UUID's from CHAR(32) to BIN(16)

I have a few questions relating to UUID's, but before I go on, let me explain our schema a bit, first, we're on MySQL 5.5 (Percona's version to be exact)... In each applicable table, we use a two ...
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removal of GUIDS used for all PK's, FKs & Clustered indexes

Inherited control over a database that has this nasty config. It also has large sections of code generated by NHibernate, including the gneeration of GUIDs before they get to the db so no chance of ...