CreateQuery truncate_test_materialized_view (children 3) Identifier truncate_test_materialized_view SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 2) ExpressionList (children 1) Asterisk TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier truncate_test_materialized_depend ViewTargets (children 1) Storage definition (children 1) Function MergeTree (children 1) ExpressionList (children 3) Identifier p Identifier k Literal UInt64_1