U uiID@s ddlmZddlmZddlmZddlmZddlmZddlmZddlmZddlm Z dd lm Z d d l m Z d d l mZd dlmZd dlmZd dlmZd dlmZd dlmZd dlmZd dlmZd dlmZd dlmZe rVd dlmZd dlmZd dlm Z d dlm!Z!d dl"m#Z#d dl$m%Z%d dlm&Z&d dlm'Z'e ded Z(Gd!d"d"ej!e(Z)Gd#d$d$eZ*d%d&Z+Gd'd(d(ej,e(Z-Gd)d*d*e-Z.Gd+d,d,e-Z/Gd-d.d.e-Z0Gd/d0d0e-Z1Gd1d2d2e-Z2Gd3d4d4e-Z3d5S)6) annotations)Any)Iterable)List)Optional)overload)Tuple) TYPE_CHECKING)TypeVar)types)ARRAY) coercions)elements) expression) functions)roles)schema)ColumnCollectionConstraint)TEXT)InternalTraversal)_ColumnExpressionArgument)_DDLColumnArgument) ClauseElement) ColumnElement) OperatorType) FromClause)_CloneCallableType)_TraverseInternalsType_T)boundc@seZdZUdZdZdZdejfdejfdejfgZ de d<e dd d d d Z e d d d dd Z d d d dd Z d$dddddZ dddddZejfddddddZed d!d"d#ZdS)%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: .. sourcecode:: sql 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: .. sourcecode:: sql SELECT string_agg(a, ',' ORDER BY a) FROM table; .. versionchanged:: 1.2.13 - the ORDER BY argument may be multiple terms .. seealso:: :class:`_functions.array_agg` postgresqltargettypeorder_byr_traverse_internalszColumnElement[_T]z_ColumnExpressionArgument[Any]r$r&cGsdSNselfr$r&r*r*\/home/lhs5088/backend/venv/lib/python3.8/site-packages/sqlalchemy/dialects/postgresql/ext.py__init__Zszaggregate_order_by.__init__z_ColumnExpressionArgument[_T]cGsdSr)r*r+r*r*r-r.ascGsnttj||_|jj|_t|}||dkr8tdn2|dkrVttj|d|_nt j |dtji|_dS)Nrz)at least one ORDER BY element is requiredr Z_literal_as_text_role) rexpectrExpressionElementRoler$r%len TypeErrorr&rZ ClauseList)r,r$r&Z_lobr*r*r-r.hs&  NzOptional[OperatorType]r)againstreturncCs|Sr)r*)r,r3r*r*r- self_groupszaggregate_order_by.self_grouprzIterable[ClauseElement])kwargsr4cKs |j|jfSr)r()r,r6r*r*r- get_childrenszaggregate_order_by.get_childrenrNone)clonekwr4cKs$||jf||_||jf||_dSr)r()r,r9r:r*r*r-_copy_internalssz"aggregate_order_by._copy_internalszList[FromClause])r4cCs|jj|jjSr))r$ _from_objectsr&r,r*r*r-r<sz aggregate_order_by._from_objects)N)__name__ __module__ __qualname____doc____visit_name__Zstringify_dialectrZdp_clauseelementZdp_typer'__annotations__rr.r5r7rZ_cloner;propertyr<r*r*r*r-r",s& $ r"csZeZdZdZdZdZdZdZe dddd d d d d dZ fddZ dddZ Z S)ExcludeConstraintzA table-level EXCLUDE constraint. Defines an EXCLUDE constraint as described in the `PostgreSQL documentation`__. __ https://www.postgresql.org/docs/current/static/sql-createtable.html#SQL-CREATETABLE-EXCLUDE Zexclude_constraintNFr#wherez:class:`.ExcludeConstraint`z$:paramref:`.ExcludeConstraint.where`zTuple[_DDLColumnArgument, str]rr8)rr:r4cOsg}g}i|_t|\}}tttj||D]V\\}}} } } | dk rP|| |dk r^|jn| } | dk rt| |j| <||| | fq.||_t j |f|| d| d| dd| dd|_ | d} | dk rt tj| |_| d i|_dS) a Create an :class:`.ExcludeConstraint` object. E.g.:: const = ExcludeConstraint( (Column("period"), "&&"), (Column("group"), "="), where=(Column("group") != "some group"), ops={"group": "my_operator_class"}, ) 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", ops={"group": "my_operator_class"}, ) ) The exclude constraint defined in this example requires the ``btree_gist`` extension, that can be created using the command ``CREATE EXTENSION btree_gist;``. :param \*elements: A sequence of two tuples of the form ``(column, operator)`` where "column" is either a :class:`_schema.Column` object, or a SQL expression element (e.g. ``func.int8range(table.from, table.to)``) or the name of a column as string, and "operator" is a string containing the operator to use (e.g. `"&&"` or `"="`). 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. The ``column`` may also be a string SQL expression when passed as :func:`_expression.literal_column` or :func:`_expression.text` :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. :param ops: Optional dictionary. Used to define operator classes for the elements; works the same way as that of the :ref:`postgresql_ops ` parameter specified to the :class:`_schema.Index` construct. .. versionadded:: 1.3.21 .. seealso:: :ref:`postgresql_operator_classes` - general description of how PostgreSQL operator classes are specified. Nname deferrable initially)rGrHrIusingZgistrFops) operatorsziprZ expect_col_expression_collectionrZDDLConstraintColumnRoleappendrG _render_exprsrr.getrJr/ZStatementOptionRolerFrK)r,rr:columnsZ render_exprsZ expressionsrLexprcolumnZstrnameZ add_elementoperatorrGrFr*r*r-r.s@a    zExcludeConstraint.__init__c s&tfdd|jD|_dS)Ncs0g|](\}}}t|ts|nj|||fqSr*) isinstancestrc).0rRrGrTtabler*r- .s z1ExcludeConstraint._set_parent..)super _set_parentrO)r,rZr: __class__rYr-r]+s  zExcludeConstraint._set_parentc sJfddjD}j|jjjjjd}|jj|S)Ncs&g|]\}}}t|j|fqSr*)rZ_copy_expressionparent)rXrR_rTr, target_tabler*r-r[8sz+ExcludeConstraint._copy..)rGrHrIrFrJ) rOr_rGrHrIrFrJdispatch_update)r,rcr:rrWr*rbr-_copy7s zExcludeConstraint._copy)N)r>r?r@rArBrF inherit_cacheZcreate_drop_stringify_dialectrZ_document_text_coercionr.r]rf __classcell__r*r*r^r-rEs  rEcOst|d<tjj||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. Z_default_array_type)r rfunc array_agg)argr:r*r*r-rjKsrjcs eZdZdZfddZZS) _regconfig_fnTcsnt|}t|dkrBtjtj|dtddtj d}|g}ng}fdd|D}t j |||dS)Nr rrG)rGapply_propagate_attrstype_c s(g|] }tjtj|tdddqSrGN)rGrmrr/rr0getattrrXrWr=r*r-r[gs z*_regconfig_fn.__init__..) listr1rr/rr0poprqr REGCONFIGr\r.)r,argsr6 initial_arg addtl_argsr^r=r-r.Ys    z_regconfig_fn.__init__)r>r?r@rgr.rhr*r*r^r-rlVsrlc@seZdZdZdZejZdS) to_tsvectoraThe PostgreSQL ``to_tsvector`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSVECTOR`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.to_tsvector` will be used automatically when invoking ``sqlalchemy.func.to_tsvector()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TN)r>r?r@rArgr ZTSVECTORr%r*r*r*r-ryssryc@seZdZdZdZejZdS) to_tsqueryaThe PostgreSQL ``to_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.to_tsquery` will be used automatically when invoking ``sqlalchemy.func.to_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNr>r?r@rArgr TSQUERYr%r*r*r*r-rzsrzc@seZdZdZdZejZdS)plainto_tsqueryaThe PostgreSQL ``plainto_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.plainto_tsquery` will be used automatically when invoking ``sqlalchemy.func.plainto_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNr{r*r*r*r-r}sr}c@seZdZdZdZejZdS)phraseto_tsqueryaThe PostgreSQL ``phraseto_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.phraseto_tsquery` will be used automatically when invoking ``sqlalchemy.func.phraseto_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNr{r*r*r*r-r~sr~c@seZdZdZdZejZdS)websearch_to_tsqueryaThe PostgreSQL ``websearch_to_tsquery`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_postgresql.TSQUERY`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.websearch_to_tsquery` will be used automatically when invoking ``sqlalchemy.func.websearch_to_tsquery()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 TNr{r*r*r*r-rsrcs(eZdZdZdZeZfddZZS) ts_headlineaThe PostgreSQL ``ts_headline`` SQL function. This function applies automatic casting of the REGCONFIG argument to use the :class:`_postgresql.REGCONFIG` datatype automatically, and applies a return type of :class:`_types.TEXT`. Assuming the PostgreSQL dialect has been imported, either by invoking ``from sqlalchemy.dialects import postgresql``, or by creating a PostgreSQL engine using ``create_engine("postgresql...")``, :class:`_postgresql.ts_headline` will be used automatically when invoking ``sqlalchemy.func.ts_headline()``, ensuring the correct argument and return type handlers are used at compile and execution time. .. versionadded:: 2.0.0rc1 Tcst|}t|dkrd}n,t|dtjrB|djjtjkrBd}nd}|rxt j t j | dtddtjd}|g}ng}fdd |D}tj|||dS) NFr TrrG)rmrGrnc s(g|] }tjtj|tdddqSrorprrr=r*r-r[s z(ts_headline.__init__..)rsr1rUrrr%Z_type_affinityr r|rr/rr0rtrqrur\r.)r,rvr6Z has_regconfigrwrxr^r=r-r.s.    zts_headline.__init__) r>r?r@rArgrr%r.rhr*r*r^r-rsrN)4 __future__rtypingrrrrrrr r r arrayr sqlrrrrrrZ sql.schemarZ sql.sqltypesrZ sql.visitorsrZ sql._typingrrZ sql.elementsrrZ sql.operatorsrZsql.selectablerrrr r"rErjZGenericFunctionrlryrzr}r~rrr*r*r*r-sP                             f: