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Vivek's SQL Notes

Vivek johari is currently a Analyst and have more that 5.5 yeras of experience in database. He has Master degree in Computer and also he is Microsoft certified Sql DBA (MCTS)& Microsoft certified SQl BI professional(MCTS). He is also Oracle certified profession(OCP)DBA in ORACLE 10g and ORACLE 9i.He has the experience of working in PL/SQL, T-SQL and SSIS/SSRS. His work basically involved designing and optimization of the Database.He has also published many database articles on his blog Technologies with Vivek Johari.

Archives: April 2014

Question of the Week -08/04/2014


Suppose we need to find out the name of all the months in a given year (Year will be given as an input parameter) where first day of the month falls on weekend (Saturday or Sunday). 

So what should be the query/stored procedure to get the above result?

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5 comments, 200 reads

Posted in Vivek's SQL Notes on 8 April 2014

Answer - Objective Question (How many Null values in an unique constraint can be inserted in SQL Server)

Question:- How many NULL value allowed in a column in which Unique constraint is defined in SQL Server?

Options:-

a) 1

b) 2

c) More than 1

Answer :- Option a) 1

In SQL Server, we can Insert only one null value in a column where we have defined theā€¦

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0 comments, 198 reads

Posted in Vivek's SQL Notes on 8 April 2014