What does <> sql mean?
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select sal from emp group by sal
How to check if a column is nullable before setting to nullable?
Is pl sql still used?
Define tables and fields in a database
What is the use of non clustered index?
How many sql commands are there?
What does “select count(*) from tab” result?
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declare lowerl number:= 1; upperl number:= 3; num varchar2(10); begin for i into lowerl..upperl loop num:=num||to_char(lowerl); if i=3 then upperl:=5; end loop; message(num); What will be the output ?
HOW TO ADD PRIMARY KEY TO TABLE BY PL/SQL PROGRAM
What is mutating error in pl sql?
Is left join faster than join?
What is an index? What are the types of indexes? How many clustered indexes can be created on a table?
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