fetch
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| + | ====== FETCH Statement - PL/HQL Reference ====== | ||
| + | FETCH statement retrieve the next row from a cursor and assigns column values to local variable. | ||
| + | |||
| + | **Syntax**: | ||
| + | |||
| + | <code language=sql> | ||
| + | FETCH [FROM] cursor_name INTO var1 [, var2, ...]; | ||
| + | </code> | ||
| + | |||
| + | **Parameters:** | ||
| + | |||
| + | | **Parameter** | **Type** | **Value** | **Description** | | ||
| + | | cursor_name | | Identifier | The name of the previously opened cursor | | ||
| + | | varN | | Variable | A local variable | | ||
| + | |||
| + | **Examples:** | ||
| + | |||
| + | <code language=sql> | ||
| + | DECLARE tabname VARCHAR DEFAULT 'db.orders'; | ||
| + | DECLARE id INT; | ||
| + | DECLARE cur CURSOR FOR 'SELECT id FROM ' || tabname; | ||
| + | OPEN cur; | ||
| + | FETCH cur INTO id; | ||
| + | WHILE SQLCODE=0 THEN | ||
| + | PRINT id; | ||
| + | FETCH cur INTO id; | ||
| + | END WHILE; | ||
| + | CLOSE cur; | ||
| + | </code> | ||
| + | |||
| + | **Compatibility:** Oracle, IBM DB2, Teradata, SQL Server, MySQL, PostgreSQL and Netezza. | ||
| + | |||
| + | **See also:** | ||
| + | * [[declare-cursor|DECLARE CURSOR]] | ||
| + | * [[open|OPEN]] | ||
| + | * [[close|CLOSE]] | ||
| + | * [[sqlcode|SQLCODE]] | ||
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