Extension:EImage/ei pages table

The ei_pages table was introduced since version 3.4; Used by Special:EImagePages page.

ei_page
Numeric id pages (curid) where is the clip used.

ei_image
Sha1 checksum of the clip content, which is storage in cache. It's base string for clip and thumbnail name, and same value as use 'ei_file' field from 'ei_cache' table.

Schema summary
+--+--+--+-+-+---+ +--+--+--+-+-+---+ +--+--+--+-+-+---+
 * Field   | Type             | Null | Key | Default | Extra |
 * ei_page | int(10) unsigned | NO   | PRI | NULL    |       |
 * ei_image | varbinary(40)   | NO   | PRI | NULL    |       |

Indexes
 +--++---+--+-+---+-+--++--++-+---+ +--++---+--+-+---+-+--++--++-+---+ +--++---+--+-+---+-+--++--++-+---+
 * Table   | Non_unique | Key_name      | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
 * ei_pages |         0 | ei_page_image |            1 | ei_page     | A         |           5 |     NULL | NULL   |      | BTREE      |         |               |
 * ei_pages |         0 | ei_page_image |            2 | ei_image    | A         |          11 |     NULL | NULL   |      | BTREE      |         |               |