public Schema::fieldExists($table, $column) Check
public Schema::tableExists($table) Check if
protected Schema::escapeDefaultValue($value) Return
Provides a base implementation for Database Schema. Hierarchy class \Drupal\Core\Database\
The database connection. Type:
abstract public Schema::indexExists($table, $name) Checks
public Schema::prepareComment($comment, $length = NULL)
abstract public Schema::dropIndex($table, $name) Drop
protected Schema::getPrefixInfo($table = 'default', $add_prefix = TRUE)
abstract public Schema::dropPrimaryKey($table) Drop
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