DELETE syntaxΒΆ
DELETE FROM index WHERE where_condition
DELETE statement is only supported for RT indexes and for distributed which contains only RT indexes as agents It deletes existing rows (documents) from an existing index based on ID.
index is the name of RT index from which the row should be deleted.
where_condition has the same syntax as in the SELECT statement (see
SELECT syntax for
details).
mysql> select * from rt;
+------+------+-------------+------+
| id | gid | mva1 | mva2 |
+------+------+-------------+------+
| 100 | 1000 | 100,201 | 100 |
| 101 | 1001 | 101,202 | 101 |
| 102 | 1002 | 102,203 | 102 |
| 103 | 1003 | 103,204 | 103 |
| 104 | 1004 | 104,204,205 | 104 |
| 105 | 1005 | 105,206 | 105 |
| 106 | 1006 | 106,207 | 106 |
| 107 | 1007 | 107,208 | 107 |
+------+------+-------------+------+
8 rows in set (0.00 sec)
mysql> delete from rt where match ('dumy') and mva1>206;
Query OK, 2 rows affected (0.00 sec)
mysql> select * from rt;
+------+------+-------------+------+
| id | gid | mva1 | mva2 |
+------+------+-------------+------+
| 100 | 1000 | 100,201 | 100 |
| 101 | 1001 | 101,202 | 101 |
| 102 | 1002 | 102,203 | 102 |
| 103 | 1003 | 103,204 | 103 |
| 104 | 1004 | 104,204,205 | 104 |
| 105 | 1005 | 105,206 | 105 |
+------+------+-------------+------+
6 rows in set (0.00 sec)
mysql> delete from rt where id in (100,104,105);
Query OK, 3 rows affected (0.01 sec)
mysql> select * from rt;
+------+------+---------+------+
| id | gid | mva1 | mva2 |
+------+------+---------+------+
| 101 | 1001 | 101,202 | 101 |
| 102 | 1002 | 102,203 | 102 |
| 103 | 1003 | 103,204 | 103 |
+------+------+---------+------+
3 rows in set (0.00 sec)
mysql> delete from rt where mva1 in (102,204);
Query OK, 2 rows affected (0.01 sec)
mysql> select * from rt;
+------+------+---------+------+
| id | gid | mva1 | mva2 |
+------+------+---------+------+
| 101 | 1001 | 101,202 | 101 |
+------+------+---------+------+
1 row in set (0.00 sec)