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  1. Categories >> Software >> Databases >> SQL PLSQL
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What are primary key and foreign key and how they work?

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More SQL PLSQL Interview Questions

How do you remove duplicates without using distinct in sql?

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what is the difference between varray and table data type..please expalain with some examples... under what situation you will go for varray..instead of index by table...

1 Answers   HCL, Satyam,

Table name: T1, it has only one column. col1 ------ c b a b b b b d s a a t s Requirement: I need the following output from the above base table by using SQL query. col1 Cnt ----- ------- a 3 b 5 Others 5 Please help. Thanks Guru v.gurus@in.com

11 Answers  

What are transaction and its controls?

0 Answers  

What is cursor and its types?

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How do I copy a table in sql?

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Can we use having without group by in sql?

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What is the difference between left and left outer join?

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What are the two parts of a procedure ?

6 Answers   Hi Caliber IT,

How to return multiple rows from the stored procedure?

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What is a REF CURSOR? Compare strong and week ref cursor types.

6 Answers  

What is sql not null constraint?

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