What is an oracle stored procedure?
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What do you mean by rowid?
who introduced sql?
How do I find duplicates in two columns?
can we delete the trigger in a view? if yes why if not why?
what is sql profiler
Is there a pl/sql pragma similar to deterministic, but for the scope of one single sql select?
Why do we use sql constraints?
When is the update_statistics command used?
How to avoid duplicate records in a query?
What port does sql server use?
How to get unique records from a table?
Create table emp (id number(9), name varchar2(20),salary number(9,2)); The table has 100 records after table created.Now i nee to change id's Datatype is to be Varchar2(15). now Alter table emp modify(id varchar2(15),name varchar2(20), salary number(9,2)); Whether it will work or returns error? post answer with explanation.
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