protected Schema::createTableSql($name, $table)

public Schema::getFieldTypeMap() Returns

public Schema::dropUniqueKey($table, $name)

Maximum length of a table comment in MySQL. File core/lib/Drupal/Core/Database/Driver/mysql/Schema.php

MySQL implementation of \Drupal\Core

public Schema::tableExists($table) Check

public Schema::fieldSetNoDefault($table, $field)

public Schema::addUniqueKey($table, $name, $fields)

Maximum length of a column comment in MySQL. File core/lib/Drupal/Core/Database/Driver/mysql/Schema.php

public Schema::getComment($table, $column = NULL)