Extension:CentralNotice/cn assignments table

Fields

 * }

Schema
+++--+-+-++ +++--+-+-++ +++--+-+-++
 * Field     | Type       | Null | Key | Default | Extra          |
 * asn_id    | int(11)    | NO   | PRI | NULL    | auto_increment |
 * not_id    | int(11)    | NO   | MUL | NULL    |                |
 * tmp_id    | int(11)    | NO   | MUL | NULL    |                |
 * tmp_weight | int(11)   | NO   |     | NULL    |                |
 * asn_bucket | tinyint(1) | YES | MUL | 0       |                |

Indexes
++++--+-+---+-+--++--++-+---+ ++++--+-+---+-+--++--++-+---+ ++++--+-+---+-+--++--++-+---+
 * Table         | Non_unique | Key_name   | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
 * cn_assignments |         0 | PRIMARY    |            1 | asn_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * cn_assignments |         1 | asn_not    |            1 | not_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * cn_assignments |         1 | asn_tmp    |            1 | tmp_id      | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |
 * cn_assignments |         1 | asn_bucket |            1 | asn_bucket  | A         |           0 |     NULL | NULL   | YES  | BTREE      |         |               |