public Schema::fieldExists($table, $column)
Check if a column exists in the given table.
Parameters
$table: The name of the table in drupal (no prefixing).
$name: The name of the column.
Return value
TRUE if the given column exists, otherwise FALSE.
Overrides Schema::fieldExists
File
- core/lib/Drupal/Core/Database/Driver/mysql/Schema.php, line 584
Class
- Schema
- MySQL implementation of \Drupal\Core\Database\Schema.
Namespace
Drupal\Core\Database\Driver\mysql
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | public function fieldExists($table, $column) { // The information_schema table is very slow to query under MySQL 5.0. // Instead, we try to select from the table and field in question. If it // fails, the most likely reason is that it does not exist. That is // dramatically faster than using information_schema. // @todo This override should be removed once we require a version of MySQL // that has that bug fixed. try { $this->connection->queryRange("SELECT $column FROM {" . $table . "}", 0, 1); return TRUE; } catch (\Exception $e) { return FALSE; }} |
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