Which is faster joins or subqueries?
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What is a constraint? Tell me about its various levels.
Can we group by two columns in sql?
Why do we use view in sql?
How to delete same emp id in sql query for exmaple in emp table emp id, empname, emp address. for example emp id =5, repeated in two times in rows same id how to delete same empid please any one of the write query send in my id
what are the differences between require and include, include_once and require_once? : Sql dba
what is the syntax used for partition in tsql? : Transact sql
Does oracle roll back the transaction on an error?
How can I make sql query run faster?
What is range partitioning?
What is sql engine in oracle?
What is pivot in sql?
write a query filter the null value data following source? name age john 30 smith null null 24 sharp 35 i want output name age john 30 sharp 35
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