85 lines
2.6 KiB
Markdown
85 lines
2.6 KiB
Markdown
Data
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====
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WooCommerce Admin data stores implement the [`SqlQuery` class](https://github.com/woocommerce/woocommerce/blob/trunk/plugins/woocommerce/src/Admin/API/Reports/SqlQuery.php).
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### SqlQuery Class
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The `SqlQuery` class is a SQL Query statement object. Its properties consist of
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- A `context` string identifying the context of the query.
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- SQL clause (`type`) string arrays used to construct the SQL statement:
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- `select`
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- `from`
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- `right_join`
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- `join`
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- `left_join`
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- `where`
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- `where_time`
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- `group_by`
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- `having`
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- `order_by`
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- `limit`
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### Reports Data Stores
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The base DataStore `Automattic\WooCommerce\Admin\API\Reports\DataStore` extends the `SqlQuery` class. The implementation data store classes use the following `SqlQuery` instances:
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| Data Store | Context | Class Query | Sub Query | Interval Query | Total Query |
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| ---------- | ------- | ----------- | --------- | -------------- | ----------- |
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| Categories | categories | Yes | Yes | - | - |
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| Coupons | coupons | Yes | Yes | - | - |
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| Coupon Stats | coupon_stats | Yes | - | Yes | Yes |
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| Customers | customers | Yes | Yes | - | - |
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| Customer Stats | customer_stats | Yes | - | Yes | Yes |
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| Downloads | downloads | Yes | Yes | - | - |
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| Download Stats | download_stats | Yes | - | Yes | Yes |
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| Orders | orders | Yes | Yes | - | - |
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| Order Stats | order_stats | Yes | - | Yes | Yes |
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| Products | products | Yes | Yes | - | - |
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| Product Stats | product_stats | Yes | - | Yes | Yes |
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| Taxes | taxes | Yes | Yes | - | - |
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| Tax Stats | tax_stats | Yes | - | Yes | Yes |
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| Variations | variations | Yes | Yes | - | - |
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Query contexts are named as follows:
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- Class Query = Class Context
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- Sub Query = Class Context + `_subquery`
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- Interval Query = Class Context + `_interval`
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- Total Query = Class Context + `_total`
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### Filters
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When getting the full statement the clause arrays are passed through two filters where `$context` is the query object context and `$type` is:
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- `select`
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- `from`
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- `join` = `right_join` + `join` + `left_join`
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- `where` = `where` + `where_time`
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- `group_by`
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- `having`
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- `order_by`
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- `limit`
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The filters are:
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- `apply_filters( "wc_admin_clauses_{$type}", $clauses, $context );`
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- `apply_filters( "wc_admin_clauses_{$type}_{$context}", $clauses );`
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Example usage
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```
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add_filter( 'wc_admin_clauses_product_stats_select_total', 'my_custom_product_stats' );
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/**
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* Add sample data to product stats totals.
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*
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* @param array $clauses array of SELECT clauses.
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* @return array
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*/
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function my_custom_product_stats( $clauses ) {
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$clauses[] = ', SUM( sample_column ) as sample_total';
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return $clauses;
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}
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```
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