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woocommerce
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Tweaked tax query to contain less subqueries

This commit is contained in:
Mike Jolley 2014-06-02 11:55:36 +01:00
parent 387cc973df
commit 6b35c59f5b
1 changed files with 42 additions and 52 deletions
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94
includes/class-wc-tax.php
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@ -220,8 +220,9 @@ class WC_Tax {
extract( $args, EXTR_SKIP );
if ( ! $country )
if ( ! $country ) {
return array();
}
// Handle postcodes
$valid_postcodes = array( '*', strtoupper( wc_clean( $postcode ) ) );
@ -245,57 +246,39 @@ class WC_Tax {
// Run the query
$found_rates = $wpdb->get_results( $wpdb->prepare( "
SELECT * FROM (
SELECT tax_rates.* FROM
{$wpdb->prefix}woocommerce_tax_rates as tax_rates
LEFT OUTER JOIN
{$wpdb->prefix}woocommerce_tax_rate_locations as locations ON tax_rates.tax_rate_id = locations.tax_rate_id
LEFT OUTER JOIN
{$wpdb->prefix}woocommerce_tax_rate_locations as locations2 ON tax_rates.tax_rate_id = locations2.tax_rate_id
WHERE
tax_rate_country IN ( %s, '' )
AND tax_rate_state IN ( %s, '' )
AND tax_rate_class = %s
AND
(
(
locations.location_type IS NULL
)
OR
(
locations.location_type = 'postcode'
AND locations.location_code IN ('" . implode( "','", $valid_postcodes ) . "')
AND locations2.location_type = 'city'
AND locations2.location_code = %s
)
OR
(
locations.location_type = 'postcode'
AND locations.location_code IN ('" . implode( "','", $valid_postcodes ) . "')
AND 0 = (
SELECT COUNT(*) FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'city'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
)
OR
(
locations.location_type = 'city'
AND locations.location_code = %s
AND 0 = (
SELECT COUNT(*) FROM {$wpdb->prefix}woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'postcode'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
SELECT tax_rates.*
FROM {$wpdb->prefix}woocommerce_tax_rates as tax_rates
LEFT OUTER JOIN {$wpdb->prefix}woocommerce_tax_rate_locations as locations ON tax_rates.tax_rate_id = locations.tax_rate_id
LEFT OUTER JOIN {$wpdb->prefix}woocommerce_tax_rate_locations as locations2 ON tax_rates.tax_rate_id = locations2.tax_rate_id
WHERE tax_rate_country IN ( %s, '' )
AND tax_rate_state IN ( %s, '' )
AND tax_rate_class = %s
AND (
locations.location_type IS NULL
OR (
locations.location_type = 'postcode'
AND locations.location_code IN ('" . implode( "','", $valid_postcodes ) . "')
AND (
locations2.location_type = 'city' AND locations2.location_code = %s
OR 0 = (
SELECT COUNT(*) FROM wp_woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'city'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
)
GROUP BY
tax_rate_id
ORDER BY
tax_rate_priority, tax_rate_order
) as ordered_taxes
GROUP BY
tax_rate_priority
)
OR (
locations.location_type = 'city'
AND locations.location_code = %s
AND 0 = (
SELECT COUNT(*) FROM wp_woocommerce_tax_rate_locations as sublocations
WHERE sublocations.location_type = 'postcode'
AND sublocations.tax_rate_id = tax_rates.tax_rate_id
)
)
)
GROUP BY tax_rate_id
ORDER BY tax_rate_priority, tax_rate_order
",
strtoupper( $country ),
strtoupper( $state ),
@ -304,10 +287,14 @@ class WC_Tax {
strtoupper( $city )
) );
// Put results into array
$matched_tax_rates = array();
$found_priority = array();
foreach ( $found_rates as $found_rate )
foreach ( $found_rates as $found_rate ) {
if ( in_array( $found_rate->tax_rate_priority, $found_priority ) ) {
continue;
}
$matched_tax_rates[ $found_rate->tax_rate_id ] = array(
'rate' => $found_rate->tax_rate,
'label' => $found_rate->tax_rate_name,
@ -315,6 +302,9 @@ class WC_Tax {
'compound' => $found_rate->tax_rate_compound ? 'yes' : 'no'
);
$found_priority[] = $found_rate->tax_rate_priority;
}
$matched_tax_rates = apply_filters( 'woocommerce_matched_tax_rates', $matched_tax_rates, $country, $state, $postcode, $city, $tax_class );
set_transient( $rates_transient_key, $matched_tax_rates, DAY_IN_SECONDS );