What do you know by pl/sql cursors?
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What is the primary key?
What is Overloading of procedures ?
What is nosql db?
how to add a new column to an existing table in mysql? : Sql dba
I have following column in the table. col1 1 a b c 2 3 d and I want to display it as num chars 1 a 2 b 3 c 4 d numbers in one column and letters in another column.
what is the difference between nested subquery and correlated subquery?
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
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