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).
$name: The name of the column.
Return value
TRUE if the given column exists, otherwise FALSE.
File
- core/lib/Drupal/Core/Database/Schema.php, line 244
Class
- Schema
- Provides a base implementation for Database Schema.
Namespace
Drupal\Core\Database
Code
public function fieldExists($table, $column) {
$condition = $this->buildTableNameCondition($table);
$condition->condition('column_name', $column);
$condition->compile($this->connection, $this);
// Normally, we would heartily discourage the use of string
// concatenation for conditionals like this however, we
// couldn't use db_select() here because it would prefix
// information_schema.tables and the query would fail.
// Don't use {} around information_schema.columns table.
return (bool) $this->connection->query("SELECT 1 FROM information_schema.columns WHERE " . (string) $condition, $condition->arguments())->fetchField();
}
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