How many null values we can have in a unique key field in sql server?


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Explain full-text query in sql server?

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I am using SQL Server 2005, I have some select and update statements in my query with WHERE clause I want to prevent these queries from SQL injection attacks. What are the steps and precautions to be taken for SQL Injection attacks? Does anybody have suggestions? Thanks in advance,

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write an SQL query to list the employees who joined in the month of January?

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Explain different types of self contained sub query?

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