ROW_COUNT

Sintassi

ROW_COUNT()

Spiegazione

ROW_COUNT() restituisce il numero di righe inserite, modificate o eliminate dall'ultima istruzione. E' lo stesso numero visualizzato dal client mysql e restituito dalla funzione dell'API C mysql_affected_rows().

Esempi

MariaDB [test]> create table t (A INT);
Query OK, 0 rows affected (0.08 sec)

MariaDB [test]> INSERT INTO t VALUES(1),(2),(3);
Query OK, 3 rows affected (0.00 sec)
Records: 3  Duplicates: 0  Warnings: 0

MariaDB [test]> SELECT ROW_COUNT();
+-------------+
| ROW_COUNT() |
+-------------+
|           3 |
+-------------+
1 row in set (0.00 sec)

MariaDB [test]> DELETE FROM t WHERE A IN(1,2);
Query OK, 2 rows affected (0.01 sec)

MariaDB [test]> SELECT ROW_COUNT(); 
+-------------+
| ROW_COUNT() |
+-------------+
|           2 |
+-------------+
1 row in set (0.00 sec)

MariaDB [test]> 

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