what are string data types? : Sql dba

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what are sequences

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Create a procedure to delete certain records from a table and display the total number of records deleted in this process. (Condition for deletion can be of ur choice, for instance delete all records where eid='')

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What is count * in sql?

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Can I learn sql in a week?

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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.

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What are sql functions? Describe the different types of sql functions?

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oracle is compiler or interpretter,can any one tell me the answer?

9 Answers   Satyam,

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Can We write bulk collect statement in triggers?

1 Answers   Polaris,

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What are inner outer left and right joins in sql?

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How do I run sql?

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What is the need of a partition key?

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