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- <?php
- namespace Drupal\Core\Database\Driver\mysql;
- use Drupal\Core\Database\Query\Upsert as QueryUpsert;
- /**
- * MySQL implementation of \Drupal\Core\Database\Query\Upsert.
- */
- class Upsert extends QueryUpsert {
- /**
- * {@inheritdoc}
- */
- public function __toString() {
- // Create a sanitized comment string to prepend to the query.
- $comments = $this->connection->makeComment($this->comments);
- // Default fields are always placed first for consistency.
- $insert_fields = array_merge($this->defaultFields, $this->insertFields);
- $insert_fields = array_map(function ($field) {
- return $this->connection->escapeField($field);
- }, $insert_fields);
- $query = $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $insert_fields) . ') VALUES ';
- $values = $this->getInsertPlaceholderFragment($this->insertValues, $this->defaultFields);
- $query .= implode(', ', $values);
- // Updating the unique / primary key is not necessary.
- unset($insert_fields[$this->key]);
- $update = [];
- foreach ($insert_fields as $field) {
- $update[] = "$field = VALUES($field)";
- }
- $query .= ' ON DUPLICATE KEY UPDATE ' . implode(', ', $update);
- return $query;
- }
- }
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