Why join is faster than subquery?
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how to insert the data through views? The view is depending upon more than two tables? how to update materalized views?
table having two columns - entity,zone enity zone pen east pen west pen north pen south pen east pencil east pencil east pencil west I want the output as : entity east west north south pen 2 1 1 1 pencil 2 1 0 0
Can I join the same table twice?
Explain how procedures and functions are called in a PL/SQL block ?
List out the acid properties and explain?
What is a table in a database?
What is sql and how does it work?
What is the purpose of a secondary key?
Does truncate release storage space?
What is trigger and stored procedure in sql?
List the different type of joins?
how can we replace the particular column value of a resulted set of executed query? I mean write down a sql query to chane the particular column's value of a resulted set of executed query
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