What Is the Syntax of Cursor in Sql
A Cursor Is Declared by Defining the Sql Statement. a Cursor Is Opened for Storing Data Retrieved from the Result Set. When a Cursor Is Opened, Rows Can Be...
A cursor is declared by defining the SQL statement. A cursor is opened for storing data retrieved from the result set. When a cursor is opened, rows can be fetched from the cursor one by one or in a block to do data manipulation. The cursor should be closed explicitly after data manipulation.
What Is syntax for cursor?
Syntax: DECLARE CURSOR <cursor_name> IS <SELECT statement>; BEGIN FOR I IN <cursor_name> LOOP . . END LOOP; END; In the above syntax, the declaration part contains the declaration of the cursor.
How do I make a cursor in SQL?
- Declare a cursor that defines a result set.
- Open the cursor to establish the result set.
- Fetch the data into local variables as needed from the cursor, one row at a time.
- Close the cursor when done.
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