Explain primary key, foreign key and unique key?
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What are extended events in sql server?
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3 Answers Cognizant, HCL, TCS, Theorem,
How to delete a login name in ms sql server?
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I have a table emp , Fields with empname,dnname,dno,salary. now I want copy distinct salary with all emp detail from emp into new table which is not already exist in database. how would I do this ?
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