public Schema::fieldExists($table, $column) Check

public Schema::tableExists($table) Check if

protected Schema::escapeDefaultValue($value) Return

abstract public Schema::indexExists($table, $name) Checks

The database connection. Type:

Provides a base implementation for Database Schema. Hierarchy class \Drupal\Core\Database\

protected Schema::buildTableNameCondition($table_name, $operator = '=', $add_prefix

abstract public Schema::dropTable($table) Drop

Schema::prefixNonTable($table) Create names

protected Schema::getPrefixInfo($table = 'default', $add_prefix = TRUE)