what is the difference between cursor FETCH and FOR LOOP ?
Answers were Sorted based on User's Feedback
Answer / meher
The main difference between cursor FETCH and FOR LOOP is as
below :
In case of cursor FETCH the cursor will open atleast once
but in case of cursor FOR LOOP the cursor will may or
maynot be open.
| Is This Answer Correct ? | 31 Yes | 8 No |
Answer / kiran kumar
The cursor FOR LOOP implicitly declare loop index as a
record of %ROWTYPE open a cursor implicity and repeatedly
fetch the records from the active set into the field of
record, then close the cursor implictly all rows have been
processed.
In case of cursor FETCH explicity open a cursor, fetch the
records and close the cursor.
| Is This Answer Correct ? | 26 Yes | 3 No |
Answer / paras jain
in fetch exit condition is must in for loop no need.
| Is This Answer Correct ? | 4 Yes | 0 No |
What is rank function in sql?
what are the advantages of using stored procedures? : Sql dba
How will you distinguish a global variable with a local variable in pl/sql?
Explain some predefined exceptions.
What is an index? What are the types of indexes? How many clustered indexes can be created on a table?
Explain the types of joins in sql?
What is embedded sql in db2?
Can we use rowid as primary key?
how can we know the count/number of elements of an array? : Sql dba
Explain the difference between triggers and constraints?
what is cross join? : Sql dba
How do you truncate?
Oracle (3253)
SQL Server (4518)
MS Access (429)
MySQL (1402)
Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)
DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)
Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)
Database Management (1411)
Databases AllOther (288)