February 2018
Intermediate to advanced
510 pages
16h 10m
English
Content preview from MySQL 8 Administrator???s Guide
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Implementing basic table scanning
The most basic storage engines implement a read-only level of table scanning and they might be used to support SQL queries for requesting information from the logs and other data files that are populated outside of MySQL.
The implementation of the methods is the first step towards the creation of advanced storage engines. The following shows the method calls made during a nine-row table scan of the CSV engine:
ha_tina::store_lockha_tina::external_lockha_tina::infoha_tina::rnd_initha_tina::extra - ENUM HA_EXTRA_CACHE Cache record in HA_rrnd()ha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::rnd_nextha_tina::extra ...
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