Extension:Echo/echo target page table

Schema
mysql> describe echo_target_page; +---+--+--+-+-++ +---+--+--+-+-++ +---+--+--+-+-++
 * Field    | Type             | Null | Key | Default | Extra          |
 * etp_id   | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
 * etp_page | int(10) unsigned | NO   | MUL | 0       |                |
 * etp_event | int(10) unsigned | NO  | MUL | 0       |                |

mysql> describe echo_target_page; +---+--+--+-+-++ +---+--+--+-+-++ +---+--+--+-+-++
 * Field    | Type             | Null | Key | Default | Extra          |
 * etp_id   | int(10) unsigned | NO   | PRI | NULL    | auto_increment |
 * etp_user | int(10) unsigned | NO   | MUL | 0       |                |
 * etp_page | int(10) unsigned | NO   |     | 0       |                |
 * etp_event | int(10) unsigned | NO  |     | 0       |                |

mysql> describe echo_target_page; +---+--+--+-+-+---+ +---+--+--+-+-+---+ +---+--+--+-+-+---+
 * Field    | Type             | Null | Key | Default | Extra |
 * etp_user | int(10) unsigned | NO   | PRI | 0       |       |
 * etp_page | int(10) unsigned | NO   |     | 0       |       |
 * etp_event | int(10) unsigned | NO  | PRI | 0       |       |