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Why procedure is used in sql?
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What are different types of keys?
What is procedure in pl sql?
Can dml statements be used in pl/sql?
What are the different types of constraints?
What are the components of a PL/SQL block ?
i have a table emp and columns ename,empno,mgr_id,i need ename,manager name as result i.e employee respective manager.. example empno ename mgr_id 1 john 3 2 paul 3 3 smith 1 4 kevin 1 5 stewart 2 result has to look like this ename manager john smith paul smith smith john kevin john stewart paul can u plz help me out in this.....
one of the column in my table contains the data like SAL ---- 1000 1000 2000 3000 3000 So my requirement is i want output like SAL --- 1000 2000 3000 it mean i want to delete duplicate rows only how should u write query?
Explain the working of foreign key?
How many types of relationship are there?
What is user in sql?
What is cross join example?
Is sql a microsoft product?
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