What is diff between bulk collect and forall
Answer Posted / prabhudatta barick
#"The keywords BULK COLLECT tell the SQL engine to bulk-bind output collections before returning them to the PL/SQL engine.
#You can use these keywords in the SELECT INTO, FETCH INTO, and RETURNING INTO clauses. Here is the syntax:
... BULK COLLECT INTO collection_name[, collection_name] ..."
#"The keyword FORALL instructs the PL/SQL engine to bulk-bind input collections before sending them to the SQL engine.
Although the FORALL statement contains an iteration scheme, it is not a FOR loop. Its syntax follows:
FORALL index IN lower_bound..upper_bound
sql_statement;
The index can be referenced only within the FORALL statement and only as a collection subscript.
The SQL statement must be an INSERT, UPDATE, or DELETE statement that references collection elements. And, the bounds must specify a valid range of consecutive index numbers.
The SQL engine executes the SQL statement once for each index number in the range."
Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What is the difference between local variables and global variables?
What is scalar function?
how can we take a backup of a mysql table and how can we restore it. ? : Sql dba
What is the difference between microsoft sql and mysql?
How do I run a sql trace?
Is pl sql still used?
Can a trigger call a stored procedure?
What is difference between table and view?
what is primary key? : Sql dba
Is json a nosql?
Mention what does plvtab enables you to do when you showthe contents of pl/sql tables?
What is package in pl sql with an examples?
Is sqlite free?
How much does sql certification cost?
Why we use cross join?