![FETCH statement [ESQL] [SP]](gif/backward.gif)
ASA SQL Reference
SQL Statements
Use this statement to repeat the execution of a statement list once for each row in a cursor.
[ statement-label : ]
FOR for-loop-name AS cursor-name
CURSOR FOR statement
[ FOR UPDATE | FOR READ ONLY ]
DO statement-list
END FOR [ statement-label ]
The FOR statement is a control statement that allows you to execute a list of SQL statements once for each row in a cursor. The FOR statement is equivalent to a compound statement with a DECLARE for the cursor and a DECLARE of a variable for each column in the result set of the cursor followed by a loop that fetches one row from the cursor into the local variables and executes statement-list once for each row in the cursor.
Valid cursor types include dynamic scroll (default), scroll, no scroll, sensitive, and insensitive.
The name and data type of each local variable is derived from the statement used in the cursor. With a SELECT statement, the data types will be the data types of the expressions in the select list. The names will be the select list item aliases, if they exist; otherwise, they will be the names of the columns. Any select list item that is not a simple column reference must have an alias. With a CALL statement, the names and data types will be taken from the RESULT clause in the procedure definition.
The LEAVE statement can be used to resume execution at the first statement after the END FOR. If the ending statement-label is specified, it must match the beginning statement-label.
None.
None.
DECLARE CURSOR statement [ESQL] [SP]
SQL/92 Persistent Stored Module feature.
SQL/99 Persistent Stored Module feature.
Sybase Not supported by Adaptive Server Enterprise.
The following fragment illustrates the use of the FOR loop.
FOR names AS curs CURSOR FOR SELECT emp_lname FROM employee DO CALL search_for_name( emp_lname ); END FOR;