Expanded class hierarchy of MergeQuery in Drupal 7
- class \Query implements QueryPlaceholderInterface
- class \DeleteQuery implements QueryConditionInterface
- class \InsertQuery
- class \MergeQuery implements QueryConditionInterface
- class \MergeQuery_sqlsrv
- class \MergeQuery_sqlsrv
- class \MergeQuery_sqlsrv
- class \SelectQuery implements SelectQueryInterface
- class \TruncateQuery
- class \UpdateQuery implements QueryConditionInterface