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<?php
/**
* Meta API: WP_Meta_Query class
*
* @package WordPress
* @subpackage Meta
* @since 4.4.0
*/
/**
* Core class used to implement meta queries for the Meta API.
*
* Used for generating SQL clauses that filter a primary query according to metadata keys and values.
*
* WP_Meta_Query is a helper that allows primary query classes, such as WP_Query and WP_User_Query,
*
* to filter their results by object metadata, by generating `JOIN` and `WHERE` subclauses to be attached
* to the primary SQL query string.
*
* @since 3.2.0
*/
class WP_Meta_Query {
/**
* Array of metadata queries.
*
* See WP_Meta_Query::__construct() for information on meta query arguments.
*
* @since 3.2.0
* @var array
*/
public $queries = array();
/**
* The relation between the queries. Can be one of 'AND' or 'OR'.
*
* @since 3.2.0
* @var string
*/
public $relation;
/**
* Database table to query for the metadata.
*
* @since 4.1.0
* @var string
*/
public $meta_table;
/**
* Column in meta_table that represents the ID of the object the metadata belongs to.
*
* @since 4.1.0
* @var string
*/
public $meta_id_column;
/**
* Database table that where the metadata's objects are stored (eg $wpdb->users).
*
* @since 4.1.0
* @var string
*/
public $primary_table;
/**
* Column in primary_table that represents the ID of the object.
*
* @since 4.1.0
* @var string
*/
public $primary_id_column;
/**
* A flat list of table aliases used in JOIN clauses.
*
* @since 4.1.0
* @var array
*/
protected $table_aliases = array();
/**
* A flat list of clauses, keyed by clause 'name'.
*
* @since 4.2.0
* @var array
*/
protected $clauses = array();
/**
* Whether the query contains any OR relations.
*
* @since 4.3.0
* @var bool
*/
protected $has_or_relation = false;
/**
* Constructor.
*
* @since 3.2.0
* @since 4.2.0 Introduced support for naming query clauses by associative array keys.
* @since 5.1.0 Introduced $compare_key clause parameter, which enables LIKE key matches.
* @since 5.3.0 Increased the number of operators available to $compare_key. Introduced $type_key,
* which enables the $key to be cast to a new data type for comparisons.
*
* @param array $meta_query {
* Array of meta query clauses. When first-order clauses or sub-clauses use strings as
* their array keys, they may be referenced in the 'orderby' parameter of the parent query.
*
* @type string $relation Optional. The MySQL keyword used to join
* the clauses of the query. Accepts 'AND', or 'OR'. Default 'AND'.
* @type array ...$0 {
* Optional. An array of first-order clause parameters, or another fully-formed meta query.
*
* @type string $key Meta key to filter by.
* @type string $compare_key MySQL operator used for comparing the $key. Accepts '=', '!='
* 'LIKE', 'NOT LIKE', 'IN', 'NOT IN', 'REGEXP', 'NOT REGEXP', 'RLIKE',
* 'EXISTS' (alias of '=') or 'NOT EXISTS' (alias of '!=').
* Default is 'IN' when `$key` is an array, '=' otherwise.
* @type string $type_key MySQL data type that the meta_key column will be CAST to for
* comparisons. Accepts 'BINARY' for case-sensitive regular expression
* comparisons. Default is ''.
* @type string $value Meta value to filter by.
* @type string $compare MySQL operator used for comparing the $value. Accepts '=',
* '!=', '>', '>=', '<', '<=', 'LIKE', 'NOT LIKE',
* 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN', 'REGEXP',
* 'NOT REGEXP', 'RLIKE', 'EXISTS' or 'NOT EXISTS'.
* Default is 'IN' when `$value` is an array, '=' otherwise.
* @type string $type MySQL data type that the meta_value column will be CAST to for
* comparisons. Accepts 'NUMERIC', 'BINARY', 'CHAR', 'DATE',
* 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', or 'UNSIGNED'.
* Default is 'CHAR'.
* }
* }
*/
public function __construct( $meta_query = false ) {
if ( ! $meta_query ) {
return;
}
if ( isset( $meta_query['relation'] ) && 'OR' === strtoupper( $meta_query['relation'] ) ) {
$this->relation = 'OR';
} else {
$this->relation = 'AND';
}
$this->queries = $this->sanitize_query( $meta_query );
}
/**
* Ensure the 'meta_query' argument passed to the class constructor is well-formed.
*
* Eliminates empty items and ensures that a 'relation' is set.
*
* @since 4.1.0
*
* @param array $queries Array of query clauses.
* @return array Sanitized array of query clauses.
*/
public function sanitize_query( $queries ) {
$clean_queries = array();
if ( ! is_array( $queries ) ) {
return $clean_queries;
}
foreach ( $queries as $key => $query ) {
if ( 'relation' === $key ) {
$relation = $query;
} elseif ( ! is_array( $query ) ) {
continue;
// First-order clause.
} elseif ( $this->is_first_order_clause( $query ) ) {
if ( isset( $query['value'] ) && array() === $query['value'] ) {
unset( $query['value'] );
}
$clean_queries[ $key ] = $query;
// Otherwise, it's a nested query, so we recurse.
} else {
$cleaned_query = $this->sanitize_query( $query );
if ( ! empty( $cleaned_query ) ) {
$clean_queries[ $key ] = $cleaned_query;
}
}
}
if ( empty( $clean_queries ) ) {
return $clean_queries;
}
// Sanitize the 'relation' key provided in the query.
if ( isset( $relation ) && 'OR' === strtoupper( $relation ) ) {
$clean_queries['relation'] = 'OR';
$this->has_or_relation = true;
/*
* If there is only a single clause, call the relation 'OR'.
* This value will not actually be used to join clauses, but it
* simplifies the logic around combining key-only queries.
*/
} elseif ( 1 === count( $clean_queries ) ) {
$clean_queries['relation'] = 'OR';
// Default to AND.
} else {
$clean_queries['relation'] = 'AND';
}
return $clean_queries;
}
/**
* Determine whether a query clause is first-order.
*
* A first-order meta query clause is one that has either a 'key' or
* a 'value' array key.
*
* @since 4.1.0
*
* @param array $query Meta query arguments.
* @return bool Whether the query clause is a first-order clause.
*/
protected function is_first_order_clause( $query ) {
return isset( $query['key'] ) || isset( $query['value'] );
}
/**
* Constructs a meta query based on 'meta_*' query vars
*
* @since 3.2.0
*
* @param array $qv The query variables
*/
public function parse_query_vars( $qv ) {
$meta_query = array();
/*
* For orderby=meta_value to work correctly, simple query needs to be
* first (so that its table join is against an unaliased meta table) and
* needs to be its own clause (so it doesn't interfere with the logic of
* the rest of the meta_query).
*/
$primary_meta_query = array();
foreach ( array( 'key', 'compare', 'type', 'compare_key', 'type_key' ) as $key ) {
if ( ! empty( $qv[ "meta_$key" ] ) ) {
$primary_meta_query[ $key ] = $qv[ "meta_$key" ];
}
}
// WP_Query sets 'meta_value' = '' by default.
if ( isset( $qv['meta_value'] ) && '' !== $qv['meta_value'] && ( ! is_array( $qv['meta_value'] ) || $qv['meta_value'] ) ) {
$primary_meta_query['value'] = $qv['meta_value'];
}
$existing_meta_query = isset( $qv['meta_query'] ) && is_array( $qv['meta_query'] ) ? $qv['meta_query'] : array();
if ( ! empty( $primary_meta_query ) && ! empty( $existing_meta_query ) ) {
$meta_query = array(
'relation' => 'AND',
$primary_meta_query,
$existing_meta_query,
);
} elseif ( ! empty( $primary_meta_query ) ) {
$meta_query = array(
$primary_meta_query,
);
} elseif ( ! empty( $existing_meta_query ) ) {
$meta_query = $existing_meta_query;
}
$this->__construct( $meta_query );
}
/**
* Return the appropriate alias for the given meta type if applicable.
*
* @since 3.7.0
*
* @param string $type MySQL type to cast meta_value.
* @return string MySQL type.
*/
public function get_cast_for_type( $type = '' ) {
if ( empty( $type ) ) {
return 'CHAR';
}
$meta_type = strtoupper( $type );
if ( ! preg_match( '/^(?:BINARY|CHAR|DATE|DATETIME|SIGNED|UNSIGNED|TIME|NUMERIC(?:\(\d+(?:,\s?\d+)?\))?|DECIMAL(?:\(\d+(?:,\s?\d+)?\))?)$/', $meta_type ) ) {
return 'CHAR';
}
if ( 'NUMERIC' === $meta_type ) {
$meta_type = 'SIGNED';
}
return $meta_type;
}
/**
* Generates SQL clauses to be appended to a main query.
*
* @since 3.2.0
*
* @param string $type Type of meta, eg 'user', 'post'.
* @param string $primary_table Database table where the object being filtered is stored (eg wp_users).
* @param string $primary_id_column ID column for the filtered object in $primary_table.
* @param object $context Optional. The main query object.
* @return array|false {
* Array containing JOIN and WHERE SQL clauses to append to the main query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
public function get_sql( $type, $primary_table, $primary_id_column, $context = null ) {
$meta_table = _get_meta_table( $type );
if ( ! $meta_table ) {
return false;
}
$this->table_aliases = array();
$this->meta_table = $meta_table;
$this->meta_id_column = sanitize_key( $type . '_id' );
$this->primary_table = $primary_table;
$this->primary_id_column = $primary_id_column;
$sql = $this->get_sql_clauses();
/*
* If any JOINs are LEFT JOINs (as in the case of NOT EXISTS), then all JOINs should
* be LEFT. Otherwise posts with no metadata will be excluded from results.
*/
if ( false !== strpos( $sql['join'], 'LEFT JOIN' ) ) {
$sql['join'] = str_replace( 'INNER JOIN', 'LEFT JOIN', $sql['join'] );
}
/**
* Filters the meta query's generated SQL.
*
* @since 3.1.0
*
* @param array $sql Array containing the query's JOIN and WHERE clauses.
* @param array $queries Array of meta queries.
* @param string $type Type of meta.
* @param string $primary_table Primary table.
* @param string $primary_id_column Primary column ID.
* @param object $context The main query object.
*/
return apply_filters_ref_array( 'get_meta_sql', array( $sql, $this->queries, $type, $primary_table, $primary_id_column, $context ) );
}
/**
* Generate SQL clauses to be appended to a main query.
*
* Called by the public WP_Meta_Query::get_sql(), this method is abstracted
* out to maintain parity with the other Query classes.
*
* @since 4.1.0
*
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to the main query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
protected function get_sql_clauses() {
/*
* $queries are passed by reference to get_sql_for_query() for recursion.
* To keep $this->queries unaltered, pass a copy.
*/
$queries = $this->queries;
$sql = $this->get_sql_for_query( $queries );
if ( ! empty( $sql['where'] ) ) {
$sql['where'] = ' AND ' . $sql['where'];
}
return $sql;
}
/**
* Generate SQL clauses for a single query array.
*
* If nested subqueries are found, this method recurses the tree to
* produce the properly nested SQL.
*
* @since 4.1.0
*
* @param array $query Query to parse (passed by reference).
* @param int $depth Optional. Number of tree levels deep we currently are.
* Used to calculate indentation. Default 0.
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to a single query array.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
protected function get_sql_for_query( &$query, $depth = 0 ) {
$sql_chunks = array(
'join' => array(),
'where' => array(),
);
$sql = array(
'join' => '',
'where' => '',
);
$indent = '';
for ( $i = 0; $i < $depth; $i++ ) {
$indent .= ' ';
}
foreach ( $query as $key => &$clause ) {
if ( 'relation' === $key ) {
$relation = $query['relation'];
} elseif ( is_array( $clause ) ) {
// This is a first-order clause.
if ( $this->is_first_order_clause( $clause ) ) {
$clause_sql = $this->get_sql_for_clause( $clause, $query, $key );
$where_count = count( $clause_sql['where'] );
if ( ! $where_count ) {
$sql_chunks['where'][] = '';
} elseif ( 1 === $where_count ) {
$sql_chunks['where'][] = $clause_sql['where'][0];
} else {
$sql_chunks['where'][] = '( ' . implode( ' AND ', $clause_sql['where'] ) . ' )';
}
$sql_chunks['join'] = array_merge( $sql_chunks['join'], $clause_sql['join'] );
// This is a subquery, so we recurse.
} else {
$clause_sql = $this->get_sql_for_query( $clause, $depth + 1 );
$sql_chunks['where'][] = $clause_sql['where'];
$sql_chunks['join'][] = $clause_sql['join'];
}
}
}
// Filter to remove empties.
$sql_chunks['join'] = array_filter( $sql_chunks['join'] );
$sql_chunks['where'] = array_filter( $sql_chunks['where'] );
if ( empty( $relation ) ) {
$relation = 'AND';
}
// Filter duplicate JOIN clauses and combine into a single string.
if ( ! empty( $sql_chunks['join'] ) ) {
$sql['join'] = implode( ' ', array_unique( $sql_chunks['join'] ) );
}
// Generate a single WHERE clause with proper brackets and indentation.
if ( ! empty( $sql_chunks['where'] ) ) {
$sql['where'] = '( ' . "\n " . $indent . implode( ' ' . "\n " . $indent . $relation . ' ' . "\n " . $indent, $sql_chunks['where'] ) . "\n" . $indent . ')';
}
return $sql;
}
/**
* Generate SQL JOIN and WHERE clauses for a first-order query clause.
*
* "First-order" means that it's an array with a 'key' or 'value'.
*
* @since 4.1.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $clause Query clause (passed by reference).
* @param array $parent_query Parent query array.
* @param string $clause_key Optional. The array key used to name the clause in the original `$meta_query`
* parameters. If not provided, a key will be generated automatically.
* @return array {
* Array containing JOIN and WHERE SQL clauses to append to a first-order query.
*
* @type string $join SQL fragment to append to the main JOIN clause.
* @type string $where SQL fragment to append to the main WHERE clause.
* }
*/
public function get_sql_for_clause( &$clause, $parent_query, $clause_key = '' ) {
global $wpdb;
$sql_chunks = array(
'where' => array(),
'join' => array(),
);
if ( isset( $clause['compare'] ) ) {
$clause['compare'] = strtoupper( $clause['compare'] );
} else {
$clause['compare'] = isset( $clause['value'] ) && is_array( $clause['value'] ) ? 'IN' : '=';
}
$non_numeric_operators = array(
'=',
'!=',
'LIKE',
'NOT LIKE',
'IN',
'NOT IN',
'EXISTS',
'NOT EXISTS',
'RLIKE',
'REGEXP',
'NOT REGEXP',
);
$numeric_operators = array(
'>',
'>=',
'<',
'<=',
'BETWEEN',
'NOT BETWEEN',
);
if ( ! in_array( $clause['compare'], $non_numeric_operators, true ) && ! in_array( $clause['compare'], $numeric_operators, true ) ) {
$clause['compare'] = '=';
}
if ( isset( $clause['compare_key'] ) ) {
$clause['compare_key'] = strtoupper( $clause['compare_key'] );
} else {
$clause['compare_key'] = isset( $clause['key'] ) && is_array( $clause['key'] ) ? 'IN' : '=';
}
if ( ! in_array( $clause['compare_key'], $non_numeric_operators, true ) ) {
$clause['compare_key'] = '=';
}
$meta_compare = $clause['compare'];
$meta_compare_key = $clause['compare_key'];
// First build the JOIN clause, if one is required.
$join = '';
// We prefer to avoid joins if possible. Look for an existing join compatible with this clause.
$alias = $this->find_compatible_table_alias( $clause, $parent_query );
if ( false === $alias ) {
$i = count( $this->table_aliases );
$alias = $i ? 'mt' . $i : $this->meta_table;
// JOIN clauses for NOT EXISTS have their own syntax.
if ( 'NOT EXISTS' === $meta_compare ) {
$join .= " LEFT JOIN $this->meta_table";
$join .= $i ? " AS $alias" : '';
if ( 'LIKE' === $meta_compare_key ) {
$join .= $wpdb->prepare( " ON ($this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key LIKE %s )", '%' . $wpdb->esc_like( $clause['key'] ) . '%' );
} else {
$join .= $wpdb->prepare( " ON ($this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column AND $alias.meta_key = %s )", $clause['key'] );
}
// All other JOIN clauses.
} else {
$join .= " INNER JOIN $this->meta_table";
$join .= $i ? " AS $alias" : '';
$join .= " ON ( $this->primary_table.$this->primary_id_column = $alias.$this->meta_id_column )";
}
$this->table_aliases[] = $alias;
$sql_chunks['join'][] = $join;
}
// Save the alias to this clause, for future siblings to find.
$clause['alias'] = $alias;
// Determine the data type.
$_meta_type = isset( $clause['type'] ) ? $clause['type'] : '';
$meta_type = $this->get_cast_for_type( $_meta_type );
$clause['cast'] = $meta_type;
// Fallback for clause keys is the table alias. Key must be a string.
if ( is_int( $clause_key ) || ! $clause_key ) {
$clause_key = $clause['alias'];
}
// Ensure unique clause keys, so none are overwritten.
$iterator = 1;
$clause_key_base = $clause_key;
while ( isset( $this->clauses[ $clause_key ] ) ) {
$clause_key = $clause_key_base . '-' . $iterator;
$iterator++;
}
// Store the clause in our flat array.
$this->clauses[ $clause_key ] =& $clause;
// Next, build the WHERE clause.
// meta_key.
if ( array_key_exists( 'key', $clause ) ) {
if ( 'NOT EXISTS' === $meta_compare ) {
$sql_chunks['where'][] = $alias . '.' . $this->meta_id_column . ' IS NULL';
} else {
/**
* In joined clauses negative operators have to be nested into a
* NOT EXISTS clause and flipped, to avoid returning records with
* matching post IDs but different meta keys. Here we prepare the
* nested clause.
*/
if ( in_array( $meta_compare_key, array( '!=', 'NOT IN', 'NOT LIKE', 'NOT EXISTS', 'NOT REGEXP' ), true ) ) {
// Negative clauses may be reused.
$i = count( $this->table_aliases );
$subquery_alias = $i ? 'mt' . $i : $this->meta_table;
$this->table_aliases[] = $subquery_alias;
$meta_compare_string_start = 'NOT EXISTS (';
$meta_compare_string_start .= "SELECT 1 FROM $wpdb->postmeta $subquery_alias ";
$meta_compare_string_start .= "WHERE $subquery_alias.post_ID = $alias.post_ID ";
$meta_compare_string_end = 'LIMIT 1';
$meta_compare_string_end .= ')';
}
switch ( $meta_compare_key ) {
case '=':
case 'EXISTS':
$where = $wpdb->prepare( "$alias.meta_key = %s", trim( $clause['key'] ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
break;
case 'LIKE':
$meta_compare_value = '%' . $wpdb->esc_like( trim( $clause['key'] ) ) . '%';
$where = $wpdb->prepare( "$alias.meta_key LIKE %s", $meta_compare_value ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
break;
case 'IN':
$meta_compare_string = "$alias.meta_key IN (" . substr( str_repeat( ',%s', count( $clause['key'] ) ), 1 ) . ')';
$where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
case 'RLIKE':
case 'REGEXP':
$operator = $meta_compare_key;
if ( isset( $clause['type_key'] ) && 'BINARY' === strtoupper( $clause['type_key'] ) ) {
$cast = 'BINARY';
} else {
$cast = '';
}
$where = $wpdb->prepare( "$alias.meta_key $operator $cast %s", trim( $clause['key'] ) ); // phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared
break;
case '!=':
case 'NOT EXISTS':
$meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key = %s " . $meta_compare_string_end;
$where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
case 'NOT LIKE':
$meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key LIKE %s " . $meta_compare_string_end;
$meta_compare_value = '%' . $wpdb->esc_like( trim( $clause['key'] ) ) . '%';
$where = $wpdb->prepare( $meta_compare_string, $meta_compare_value ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
case 'NOT IN':
$array_subclause = '(' . substr( str_repeat( ',%s', count( $clause['key'] ) ), 1 ) . ') ';
$meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key IN " . $array_subclause . $meta_compare_string_end;
$where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
case 'NOT REGEXP':
$operator = $meta_compare_key;
if ( isset( $clause['type_key'] ) && 'BINARY' === strtoupper( $clause['type_key'] ) ) {
$cast = 'BINARY';
} else {
$cast = '';
}
$meta_compare_string = $meta_compare_string_start . "AND $subquery_alias.meta_key REGEXP $cast %s " . $meta_compare_string_end;
$where = $wpdb->prepare( $meta_compare_string, $clause['key'] ); // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
break;
}
$sql_chunks['where'][] = $where;
}
}
// meta_value.
if ( array_key_exists( 'value', $clause ) ) {
$meta_value = $clause['value'];
if ( in_array( $meta_compare, array( 'IN', 'NOT IN', 'BETWEEN', 'NOT BETWEEN' ), true ) ) {
if ( ! is_array( $meta_value ) ) {
$meta_value = preg_split( '/[,\s]+/', $meta_value );
}
} else {
$meta_value = trim( $meta_value );
}
switch ( $meta_compare ) {
case 'IN':
case 'NOT IN':
$meta_compare_string = '(' . substr( str_repeat( ',%s', count( $meta_value ) ), 1 ) . ')';
$where = $wpdb->prepare( $meta_compare_string, $meta_value );
break;
case 'BETWEEN':
case 'NOT BETWEEN':
$where = $wpdb->prepare( '%s AND %s', $meta_value[0], $meta_value[1] );
break;
case 'LIKE':
case 'NOT LIKE':
$meta_value = '%' . $wpdb->esc_like( $meta_value ) . '%';
$where = $wpdb->prepare( '%s', $meta_value );
break;
// EXISTS with a value is interpreted as '='.
case 'EXISTS':
$meta_compare = '=';
$where = $wpdb->prepare( '%s', $meta_value );
break;
// 'value' is ignored for NOT EXISTS.
case 'NOT EXISTS':
$where = '';
break;
default:
$where = $wpdb->prepare( '%s', $meta_value );
break;
}
if ( $where ) {
if ( 'CHAR' === $meta_type ) {
$sql_chunks['where'][] = "$alias.meta_value {$meta_compare} {$where}";
} else {
$sql_chunks['where'][] = "CAST($alias.meta_value AS {$meta_type}) {$meta_compare} {$where}";
}
}
}
/*
* Multiple WHERE clauses (for meta_key and meta_value) should
* be joined in parentheses.
*/
if ( 1 < count( $sql_chunks['where'] ) ) {
$sql_chunks['where'] = array( '( ' . implode( ' AND ', $sql_chunks['where'] ) . ' )' );
}
return $sql_chunks;
}
/**
* Get a flattened list of sanitized meta clauses.
*
* This array should be used for clause lookup, as when the table alias and CAST type must be determined for
* a value of 'orderby' corresponding to a meta clause.
*
* @since 4.2.0
*
* @return array Meta clauses.
*/
public function get_clauses() {
return $this->clauses;
}
/**
* Identify an existing table alias that is compatible with the current
* query clause.
*
* We avoid unnecessary table joins by allowing each clause to look for
* an existing table alias that is compatible with the query that it
* needs to perform.
*
* An existing alias is compatible if (a) it is a sibling of `$clause`
* (ie, it's under the scope of the same relation), and (b) the combination
* of operator and relation between the clauses allows for a shared table join.
* In the case of WP_Meta_Query, this only applies to 'IN' clauses that are
* connected by the relation 'OR'.
*
* @since 4.1.0
*
* @param array $clause Query clause.
* @param array $parent_query Parent query of $clause.
* @return string|false Table alias if found, otherwise false.
*/
protected function find_compatible_table_alias( $clause, $parent_query ) {
$alias = false;
foreach ( $parent_query as $sibling ) {
// If the sibling has no alias yet, there's nothing to check.
if ( empty( $sibling['alias'] ) ) {
continue;
}
// We're only interested in siblings that are first-order clauses.
if ( ! is_array( $sibling ) || ! $this->is_first_order_clause( $sibling ) ) {
continue;
}
$compatible_compares = array();
// Clauses connected by OR can share joins as long as they have "positive" operators.
if ( 'OR' === $parent_query['relation'] ) {
$compatible_compares = array( '=', 'IN', 'BETWEEN', 'LIKE', 'REGEXP', 'RLIKE', '>', '>=', '<', '<=' );
// Clauses joined by AND with "negative" operators share a join only if they also share a key.
} elseif ( isset( $sibling['key'] ) && isset( $clause['key'] ) && $sibling['key'] === $clause['key'] ) {
$compatible_compares = array( '!=', 'NOT IN', 'NOT LIKE' );
}
$clause_compare = strtoupper( $clause['compare'] );
$sibling_compare = strtoupper( $sibling['compare'] );
if ( in_array( $clause_compare, $compatible_compares, true ) && in_array( $sibling_compare, $compatible_compares, true ) ) {
$alias = preg_replace( '/\W/', '_', $sibling['alias'] );
break;
}
}
/**
* Filters the table alias identified as compatible with the current clause.
*
* @since 4.1.0
*
* @param string|bool $alias Table alias, or false if none was found.
* @param array $clause First-order query clause.
* @param array $parent_query Parent of $clause.
* @param WP_Meta_Query $this WP_Meta_Query object.
*/
return apply_filters( 'meta_query_find_compatible_table_alias', $alias, $clause, $parent_query, $this );
}
/**
* Checks whether the current query has any OR relations.
*
* In some cases, the presence of an OR relation somewhere in the query will require
* the use of a `DISTINCT` or `GROUP BY` keyword in the `SELECT` clause. The current
* method can be used in these cases to determine whether such a clause is necessary.
*
* @since 4.3.0
*
* @return bool True if the query contains any `OR` relations, otherwise false.
*/
public function has_or_relation() {
return $this->has_or_relation;
}
}
Cases also available
Visit us at The Foundry and speak with a member of our team to discuss the options available to you. If a space is available you can move in straight away! If there is not a space available right away, you can opt to be placed on our vendor waiting list or look at an alternative option such as one of our bespoke display cases.
No problem! We encourage prospective vendors to move in and start selling as soon as possible. Pro rated booth rent for the remaining period until the first of the following month will be due at contract signing.
Yes. We have a standard form contract which outlines the terms of your rental agreement.
We charge a commission of 10% on all sales.
No! Here at The Foundry we believe that you should discover the best selling environment for you. We have a six month initial term. Following this, we require just a thirty day written notice if you wish to change or terminate your rental agreement.
Rent is paid in advance starting on the first day of every month. For example: The rent due for August is due on August first.
For the convenience of all our vendors, we automatically process your rent payment from your previous month sales. If you do not have sufficient sales to cover the rent due we will notify you that payment is required. We recommend that all vendors take advantage of our vendor sales tracking system, QuailHQ for $5.00 per month.
We work in partnership with QuailHQ to provide online access to sales data 24 hours a day, 7 days a week. QuailHQ is available online and as an app for ios and android.
We recommend that all vendors take advantage of our vendor sales tracking system, QuailHQ for $5.00 per month.
Yes! We operate Social Media accounts on various platforms. In addition to our renowned service, we also regularly feature select merchandise to our social media platforms to increase awareness and bolster vendor sales. Make sure to include interesting an unique merchandise in your booth to be in with a chance to be featured on our social media!
We are open daily from 10:00 AM to 6:00 PM for you to move in and start selling! From all of us at The Foundry, we loom forward to working with you and can’t wait for you to get started!