The Ultimate Guide to High Availability with MariaDB
This is a read-only copy of the MariaDB Knowledgebase generated on 2024-11-21. For the latest, interactive version please visit https://mariadb.com/kb/.

INTERVAL

Sintassi

INTERVAL(N,N1,N2,N3,...)

Spiegazione

Restituisce 0 se N < N1, 1 se N < N2 e così via, oppure -1 se N è NULL. Tutti gli argomenti sono trattati come interi. Perché questa funzione si comporti correttamente è necessario che N1 < N2 < N3 < ... < Nn. Questo perché viene usata la ricerca binaria (molto veloce).

Esempi

MariaDB [(none)]> SELECT INTERVAL(23, 1, 15, 17, 30, 44, 200);
+--------------------------------------+
| INTERVAL(23, 1, 15, 17, 30, 44, 200) |
+--------------------------------------+
|                                    3 |
+--------------------------------------+
1 row in set (0.01 sec)

MariaDB [(none)]> SELECT INTERVAL(10, 1, 10, 100, 1000);
+--------------------------------+
| INTERVAL(10, 1, 10, 100, 1000) |
+--------------------------------+
|                              2 |
+--------------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]> SELECT INTERVAL(22, 23, 30, 44, 200);
+-------------------------------+
| INTERVAL(22, 23, 30, 44, 200) |
+-------------------------------+
|                             0 |
+-------------------------------+
1 row in set (0.00 sec)

MariaDB [(none)]>
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