Steve-Dee-Designs
/
woocommerce
mirror of https://github.com/woocommerce/woocommerce.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Reduce index sizes based on data

This commit is contained in:
Mike Jolley 2017-02-15 11:36:41 +00:00
parent 5f20f9a1f1
commit f4ab01d276
1 changed files with 18 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
includes/class-wc-install.php
View File

@ -448,7 +448,16 @@ class WC_Install {
/**
* Get Table schema.
*
* https://github.com/woocommerce/woocommerce/wiki/Database-Description/
*
* A note on indexes; Indexes have a maximum size of 767 bytes. Historically, we haven't need to be concerned about that.
* As of WordPress 4.2, however, we moved to utf8mb4, which uses 4 bytes per character. This means that an index which
* used to have room for floor(767/3) = 255 characters, now only has room for floor(767/4) = 191 characters.
*
* Changing indexes may cause duplicate index notices in logs due to https://core.trac.wordpress.org/ticket/34870 but dropping
* indexes first causes too much load on some servers/larger DB.
*
* @return string
*/
private static function get_schema() {
@ -460,16 +469,6 @@ class WC_Install {
$collate = $wpdb->get_charset_collate();
}
/*
* Indexes have a maximum size of 767 bytes. Historically, we haven't need to be concerned about that.
* As of WordPress 4.2, however, we moved to utf8mb4, which uses 4 bytes per character. This means that an index which
* used to have room for floor(767/3) = 255 characters, now only has room for floor(767/4) = 191 characters.
*
* This may cause duplicate index notices in logs due to https://core.trac.wordpress.org/ticket/34870 but dropping
* indexes first causes too much load on some servers/larger DB.
*/
$max_index_length = 191;
$tables = "
CREATE TABLE {$wpdb->prefix}woocommerce_sessions (
session_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
@ -501,7 +500,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_attribute_taxonomies (
attribute_orderby varchar(20) NOT NULL,
attribute_public int(1) NOT NULL DEFAULT 1,
PRIMARY KEY (attribute_id),
KEY attribute_name (attribute_name($max_index_length))
KEY attribute_name (attribute_name(20))
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_downloadable_product_permissions (
permission_id BIGINT UNSIGNED NOT NULL auto_increment,
@ -516,7 +515,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_downloadable_product_permissions (
access_expires datetime NULL default null,
download_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
PRIMARY KEY (permission_id),
KEY download_order_key_product (product_id,order_id,order_key($max_index_length),download_id),
KEY download_order_key_product (product_id,order_id,order_key(16),download_id),
KEY download_order_product (download_id,order_id,product_id)
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_order_items (
@ -534,7 +533,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_order_itemmeta (
meta_value longtext NULL,
PRIMARY KEY (meta_id),
KEY order_item_id (order_item_id),
KEY meta_key (meta_key($max_index_length))
KEY meta_key (meta_key(32))
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_tax_rates (
tax_rate_id BIGINT UNSIGNED NOT NULL auto_increment,
@ -549,8 +548,8 @@ CREATE TABLE {$wpdb->prefix}woocommerce_tax_rates (
tax_rate_class varchar(200) NOT NULL DEFAULT '',
PRIMARY KEY (tax_rate_id),
KEY tax_rate_country (tax_rate_country),
KEY tax_rate_state (tax_rate_state($max_index_length)),
KEY tax_rate_class (tax_rate_class($max_index_length)),
KEY tax_rate_state (tax_rate_state(2)),
KEY tax_rate_class (tax_rate_class(10)),
KEY tax_rate_priority (tax_rate_priority)
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_tax_rate_locations (
@ -560,7 +559,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_tax_rate_locations (
location_type varchar(40) NOT NULL,
PRIMARY KEY (location_id),
KEY tax_rate_id (tax_rate_id),
KEY location_type_code (location_type(40),location_code(90))
KEY location_type_code (location_type(10),location_code(20))
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_shipping_zones (
zone_id BIGINT UNSIGNED NOT NULL auto_increment,
@ -575,7 +574,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_shipping_zone_locations (
location_type varchar(40) NOT NULL,
PRIMARY KEY (location_id),
KEY location_id (location_id),
KEY location_type_code (location_type(40),location_code(90))
KEY location_type_code (location_type(10),location_code(20))
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_shipping_zone_methods (
zone_id BIGINT UNSIGNED NOT NULL,
@ -602,7 +601,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_payment_tokenmeta (
meta_value longtext NULL,
PRIMARY KEY (meta_id),
KEY payment_token_id (payment_token_id),
KEY meta_key (meta_key($max_index_length))
KEY meta_key (meta_key(32))
) $collate;
CREATE TABLE {$wpdb->prefix}woocommerce_log (
log_id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
@ -628,7 +627,7 @@ CREATE TABLE {$wpdb->prefix}woocommerce_termmeta (
meta_value longtext NULL,
PRIMARY KEY (meta_id),
KEY woocommerce_term_id (woocommerce_term_id),
KEY meta_key (meta_key($max_index_length))
KEY meta_key (meta_key(32))
) $collate;
";
}