What is not null in sql?
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What do you think about pl/sql?
What is dynamic query?
What is cte?
Delete the emps whose salaries are lowest sals of their own dept.
Explain the order of sql statement execution?
What are aggregate and scalar functions?
i have a table t1 a math 20 b phy 30 cchemisty 10 a math 40 b phy 23 c che 21 a math15 bphy 33 c che 56 write a quire to find out the max markr of each subject
What is use of package in pl sql?
How many parts of a pl sql block are optional?
How does a self join work?
Explain the significance of the & and && operators in pl sql.
Is primary key an index?
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