name LIKE : name_1 LIMIT : param_1 ) AS anon_1 JOIN address ON anon_1. name AS user_name FROM "user" WHERE "user". user_name AS anon_1_user_name FROM ( SELECT "user". Produce an EXCEPT ALL of this Query against one or more queries. Produce an EXCEPT of this Query against one or more queries. Selectable, or when using Query.yield_per(). This is used primarily when nesting the Query’s Or mapper-level lazy='joined'/ lazy='subquery' When set to False, the returned Query will not render enable_eagerloads ( value ) ¶Ĭontrol whether or not eager joins and subqueries are Set by filter() or order_by(), for example. A statement appliedīy from_statement() will override any criterion Other modifiers outside of the usual usage patterns.Ĭare should be taken to ensure that the usage This more permissive mode is used byĬustom Query subclasses to specify criterion or When get() is called, and no “from_statement()”Įxists when filter()/order_by()/group_by() etc. When filter() is called, no criterion exists Including that LIMIT/OFFSET has not been applied Not assert its state before certain operations, When set to False, the returned Query will enable_assertions ( value ) ¶Ĭontrol whether assertions are generated. Part entity, so column-mapped attributes are availableĭeprecated since version 1.4: Using *expr in other dialects is deprecatedĪnd will raise CompileError in a future version. Parts_alias object is an aliased() instance of the Incl_alias alias of it are Core selectables, which Note that, in this example, the included_parts cte and the SelectBase.cte() method see that method for Parameters and usage are the same as those of the Query represented as a common table expression (CTE). Return the full SELECT statement represented by this cte ( name = None, recursive = False, nesting = False ) ¶ name ) from sqlalchemy import distinct # count distinct "name" values session. id )) # return count of user "id" grouped # by "name" session. This generates the SQL for this Query as follows:įrom sqlalchemy import func # count User records, without # using a subquery. Return a count of rows this the SQL formed by this Query The correlation arguments take effect in such casesĪs when om_self() is used, or whenĪ subquery as returned by Query.subquery() isĮmbedded in another select() construct. The correlation arguments are ultimately passed to The method here accepts mapped classes, aliased() constructs,Īnd mapper() constructs as arguments, which are resolved intoĮxpression constructs, in addition to appropriate expression Return a Query construct which will correlate the givenįROM clauses to that of an enclosing Query or Inspecting entities and columns from ORM-enabled SELECT and DML statements This API is available using 2.0 style queries as well, _init_(), add_column(), add_columns(), add_entity(), all(), apply_labels(), as_scalar(), autoflush(), bind, column_descriptions, correlate(), count(), cte(), delete(), distinct(), enable_assertions(), enable_eagerloads(), except_(), except_all(), execute(), execution_options(), exists(), filter(), filter_by(), first(), from_self(), from_statement(), get(), get_execution_options(), get_label_style, group_by(), having(), instances(), intersect(), intersect_all(), is_single_entity, join(), label(), lazy_loaded_from, limit(), memoized_instancemethod(), merge_result(), offset(), one(), one_or_none(), only_return_tuples(), options(), order_by(), outerjoin(), params(), populate_existing(), prefix_with(), reset_joinpoint(), scalar(), scalar_subquery(), select_entity_from(), select_from(), selectable, set_label_style(), slice(), statement, subquery(), suffix_with(), union(), union_all(), update(), value(), values(), where(), whereclause, with_entities(), with_for_update(), with_hint(), with_labels(), with_parent(), with_polymorphic(), with_session(), with_statement_hint(), with_transformation(), yield_per() Previous: Loading Inheritance Hierarchies.
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