Why functions are used in sql?

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Can u create a primary key with out unique index.

8 Answers  

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Is vs as in pl sql?

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Show the cursor attributes of pl/sql.

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What are triggers and its types?

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Hi Guys, I have a situation where I need to access the column values from rowtype variable. However, the column names are dynamic. below is sample code: declare Cursor c1 is select * from emp; Cursor c2 is select column_name from xyztable; v_c2 c2%rowtype; v_str varchar2 v_value varchar2(200); begin for rec in c1 loop open c2;---this cursor has column names like EMPLOYEE_ID, FIRST_NAME, LAST_NAME etc. loop fetch c2 into v_c2; exit when c2%notfound; /* now lets say i want to access value of LAST_NAME from cursor c1, so I am writing below code, however it does not work as expected */ v_str:= 'rec.'|| v_c2.column_name; -- this will give me string like "rec.EMPLOYEE_ID" v_value:=v_str; end loop; end loop; end; / Plz help ASAP.Thanks.

2 Answers  

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how many ways we can we find the current date using mysql? : Sql dba

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Is foreign key mandatory?

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What is difference between sql and oracle?

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<<labele>> declare a=10 b=20, begin some statements declare a=30 c=40 end; what is the A value in nested block?

1 Answers   ITC Infotech,

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What are the blocks in stored procedure?

6 Answers   Microsoft,

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What is sql key?

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