Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / saleem
1) Implicit: declared for all DML and pl/sql statements.
By default it selects one row only.
2) Explicit: Declared and named by the programmer.
Use explicit cursor to
individually process each row returned by a
Multiple
statements, is called ACTIVE SET.
Allows the programmer to
manually control explicit cursor in the
Pl/sql block
a) declare: create a named sql area
b) Open: identify the active set.
c) Fetch: load the current row in to variables.
d) Close: release the active set.
CURSOR ATTRIBUTES
a) %is open: evaluates to true if the cursor is open.
b) %not found: evaluates to true if the most recent fetch
does not return a row
c) %found: evaluates to true if the most recent fetch
returns a row.
d) %row count: evaluates to the total number of rows
returned to far.
Example for cursor:
1) Declare
Vno emp.empno%type;
Vname emp.ename %type;
Cursor emp_cursor is
Select empno,ename
From emp;
Begin
Open cursor;
For I in 1..10 loop
Fetch emp_cursor into vno,vname;
Dbms_output.putline(to_char(vno) ||? ?||vname);
End if;
E nd;
2) Begin
Open emp_cursor;
Loop
Fetch when emp_cursor % rowcount >10 or
Emp_curor % not found;
Bdms_output_put_line(to_char(vno)||? ?||
vname);
End loop;
Close emp_cursor;
End;
CURSOR FOR LOOP
A) cursor for loop is a short cut to process explicit cursors
B) it has higher performance
C) cursor for loop requires only the declaration of the
cursor, remaining things like opening, fetching and close
are automatically take by the cursor for loop
Example:
1) Declare
Cursor emp_cursor is
Select empno,ename
From emp;
Begin
For emp_record in emp_cursor loop
Dbms_output.putline(emp_record.empno);
Dbms_output.putline(emp_record.ename)
End loop
End;
| Is This Answer Correct ? | 33 Yes | 11 No |
Post New Answer View All Answers
What is sca and how is it useful?
Can you define an erp system?
how can i print random rows in plsql table
pls send me out bound code of supplers,site,bankiformation code pls as soon as
how to print multi lay outs,muti currency,muti language in xml publisher
In hierarchical structure of a database? we have write query from where we should start?
What do you understand by soa and what are the benefits of using this architecture?
how do you describe O2C along with tables
Hi any one plz help me .i need 2 or 3 customized and 2 or 3 development reports on PO module..if any body having plz send me with one by one step ,i mean where u do the customization and wht are the steps u follwed when u do the customization,wht are fields u added or deleted ,How u added or these fields as per clinet requirement and wht are errors u faced .plz send it to my mail id iamvenki@gmail.com
What is oracle soa suite and what are its different components?
WHAT IS CUSTOM VIEW AND CUSTOM COMPONENT?
is it possible to run the interface without using oracle apps?
CAN YOU CUSTOMISE THE COUTOMISE CUS_TOP
In which tables receopt application form Appliy to field Value will come. I know one table i.e, ra_customer_trx.trx_number. Could U please any one tell me other than this except(ra_customer_trx and ar_payment_schedules_all tables). plz mentioned tables_name.Column_name.
Explain what are the tables of auto invoice?
