Manual:Querycache info table

The querycache_info table contains details of updates to cached special pages.

qci_type
Corresponds to a  value

qci_timestamp
Timestamp of last update

Schema summary
+---+---+--+-++---+ +---+---+--+-++---+ +---+---+--+-++---+
 * Field        | Type          | Null | Key | Default        | Extra |
 * qci_type     | varbinary(32) | NO   | PRI |                |       |
 * qci_timestamp | binary(14)   | NO   |     | 19700101000000 |       |

+---+-+--+-++---+ +---+-+--+-++---+ +---+-+--+-++---+
 * Field        | Type        | Null | Key | Default        | Extra |
 * qci_type     | varchar(32) | NO   | PRI | NULL           |       |
 * qci_timestamp | char(14)   | NO   |     | 19700101000000 |       |

Indexes
 +-++--+--+-+---+-+--++--++-+---+ +-++--+--+-+---+-+--++--++-+---+ +-++--+--+-+---+-+--++--++-+---+
 * Table          | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
 * querycache_info |         0 | PRIMARY  |            1 | qci_type    | A         |           0 |     NULL | NULL   |      | BTREE      |         |               |