؄_ddlmZddlmZddlmZddlmZddlmZGddejZ Gd d eZ d Z d S) )ARRAY)elements) expression) functions)ColumnCollectionConstraintcTeZdZdZdZdZddZdZej fdZ e dZ dS) aggregate_order_byaRepresent a PostgreSQL aggregate order by expression. E.g.:: from sqlalchemy.dialects.postgresql import aggregate_order_by expr = func.array_agg(aggregate_order_by(table.c.a, table.c.b.desc())) stmt = select([expr]) would represent the expression:: SELECT array_agg(a ORDER BY b DESC) FROM table; Similarly:: expr = func.string_agg( table.c.a, aggregate_order_by(literal_column("','"), table.c.a) ) stmt = select([expr]) Would represent:: SELECT string_agg(a, ',' ORDER BY a) FROM table; .. versionadded:: 1.1 .. versionchanged:: 1.2.13 - the ORDER BY argument may be multiple terms .. seealso:: :class:`_functions.array_agg` ctj||_t|}|dkrt d|dkr!tj|d|_dStj|dtji|_dS)Nz)at least one ORDER BY element is requiredr_literal_as_text)r_literal_as_bindstargetlen TypeErrororder_by ClauseList)selfrr_lobs g/var/www/book.euthymeo.com/html/venv/lib/python3.11/site-packages/sqlalchemy/dialects/postgresql/ext.py__init__zaggregate_order_by.__init__4s088 8}} 199GHH H QYY$6x{CCDMMM$/,4,FDMMMNc|SN)ragainsts r self_groupzaggregate_order_by.self_groupAs rc |j|jfSrrr)rkwargss r get_childrenzaggregate_order_by.get_childrenDs{DM))rc R||jfi||_||jfi||_dSrr)rclonekws r_copy_internalsz"aggregate_order_by._copy_internalsGs<eDK..2.. dm22r22 rc4|jj|jjzSr)r _from_objectsr)rs rr'z aggregate_order_by._from_objectsKs{(4=+FFFrr) __name__ __module__ __qualname____doc____visit_name__rrr!r_cloner%propertyr'rrrr r s  D*N   ***%-O3333GGXGGGrr cVeZdZdZdZdZejddddZdZ dS) ExcludeConstraintzA table-level EXCLUDE constraint. Defines an EXCLUDE constraint as described in the `postgres documentation`__. __ http://www.postgresql.org/docs/9.0/static/sql-createtable.html#SQL-CREATETABLE-EXCLUDE exclude_constraintNwherez:class:`.ExcludeConstraint`z$:paramref:`.ExcludeConstraint.where`cg}g}i|_t|\}}t|||D]d\\}}} } } | || ||jn| } | | |j| <t j|}||| | fe||_tj |g|R| d| d| dd| dd|_ | d} | t j | d |_ dSdS) a Create an :class:`.ExcludeConstraint` object. E.g.:: const = ExcludeConstraint( (Column('period'), '&&'), (Column('group'), '='), where=(Column('group') != 'some group') ) The constraint is normally embedded into the :class:`_schema.Table` construct directly, or added later using :meth:`.append_constraint`:: some_table = Table( 'some_table', metadata, Column('id', Integer, primary_key=True), Column('period', TSRANGE()), Column('group', String) ) some_table.append_constraint( ExcludeConstraint( (some_table.c.period, '&&'), (some_table.c.group, '='), where=some_table.c.group != 'some group', name='some_table_excl_const' ) ) :param \*elements: A sequence of two tuples of the form ``(column, operator)`` where "column" is a SQL expression element or a raw SQL string, most typically a :class:`_schema.Column` object, and "operator" is a string containing the operator to use. In order to specify a column name when a :class:`_schema.Column` object is not available, while ensuring that any necessary quoting rules take effect, an ad-hoc :class:`_schema.Column` or :func:`_expression.column` object should be used. :param name: Optional, the in-database name of this constraint. :param deferrable: Optional bool. If set, emit DEFERRABLE or NOT DEFERRABLE when issuing DDL for this constraint. :param initially: Optional string. If set, emit INITIALLY when issuing DDL for this constraint. :param using: Optional string. If set, emit USING when issuing DDL for this constraint. Defaults to 'gist'. :param where: Optional SQL expression construct or literal SQL string. If set, emit WHERE when issuing DDL for this constraint. Nname deferrable initially)r4r5r6usinggistr2T)allow_coercion_to_text) operatorszip"_extract_col_expression_collectionappendr4r_literal_as_column _render_exprsrrgetr7r r2)rrr$columns render_exprs expressionsr:exprcolumnstrname add_elementoperatorr4r2s rrzExcludeConstraint.__init__^sP !$h Y>A  3 3K @ @)? ?  8 8 : 0T67K(&{+++"("46;;'D'/t$066D   tX 6 7 7 7 7)"+    vvl++ff[))     VVGV,, w  #4dDJJJ  rc fdjD}j|jjjjjd}|j j|S)Nc.g|]}|j|fSr)r:).0colrs r z*ExcludeConstraint.copy..s%NNN3S$.-.NNNr)r4r5r6r2r7) rAkeys __class__r4r5r6r2r7dispatch_update)rr$rcs` rcopyzExcludeConstraint.copys}NNNN$,:K:K:M:MNNN DN n**     4=)))r) r(r)r*r+r,r2r_document_text_coercionrrSrrrr0r0Psq*N E%X%%. gg  gR     rr0cBt|d<tjj|i|S)zPostgreSQL-specific form of :class:`_functions.array_agg`, ensures return type is :class:`_postgresql.ARRAY` and not the plain :class:`_types.ARRAY`, unless an explicit ``type_`` is passed. .. versionadded:: 1.1 _default_array_type)rrfunc array_agg)argr$s rrXrXs'!&B > #S /B / //rN) arrayrsqlrrr sql.schemar ColumnElementr r0rXrrrr^s444444>G>G>G>G>G1>G>G>GBGGGGG2GGGT 0 0 0 0 0r