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to more accurately indicate where they may be used within SQL statements
of all types.
.. versionadded:: 1.4
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_role_namer r r r r% 8 r$ r% c @ r" )�ExecutableOptionRoler z"ExecutionOption Core or ORM objectNr& r r r r r( = r$ r( c @ r" )�LiteralValueRoler zLiteral Python valueNr& r r r r r) B r$ r) c @ r" )�ColumnArgumentRoler zColumn expressionNr& r r r r r* G r$ r* c @ r" )�ColumnArgumentOrKeyRoler � Column expression or string keyNr& r r r r r+ L r$ r+ c @ r" )�StrAsPlainColumnRoler r, Nr& r r r r r- Q r$ r- c @ r" )�ColumnListRolezCElements suitable for forming comma separated lists of expressions.r N�r r r r r r r r r r. V � r. c @ r" )�
StringRolez/mixin indicating a role that results in stringsr Nr/ r r r r r1 \ r0 r1 c @ r" )�TruncatedLabelRoler zString SQL identifierNr& r r r r r2 b r$ r2 c @ s" e Zd ZdZdZeddd��ZdS ) �ColumnsClauseRoler z?Column expression, FROM clause, or other columns clause element�returnr c C � t � ��N��NotImplementedError��selfr r r �_select_iterablem s z"ColumnsClauseRole._select_iterableN)r4 r )r r r r r' �propertyr; r r r r r3 g s �r3 c @ r" )�TypedColumnsClauseRolez'element-typed form of ColumnsClauseRoler Nr/ r r r r r= r r0 r= c @ r" )�LimitOffsetRoler zLIMIT / OFFSET expressionNr& r r r r r> x r$ r> c @ r" )�ByOfRoler z GROUP BY / OF / etc. expressionNr& r r r r r? } r$ r? c @ r" )� GroupByRoler zGROUP BY expressionNr& r r r r r@ � s r@ c @ r" )� OrderByRoler zORDER BY expressionNr& r r r r rA � r$ rA c @ � e Zd ZdZdS )�StructuralRoler N�r r r r r r r r rC � � rC c @ r" )�StatementOptionRoler z statement sub-expression elementNr& r r r r rF � r$ rF c @ r" )� OnClauseRoler zCON clause, typically a SQL expression or ORM relationship attributeNr& r r r r rG � � �rG c @ r" )�WhereHavingRoler z$SQL expression for WHERE/HAVING roleNr& r r r r rI � r$ rI c @ s e Zd ZdZdZd
dd�Zd S ) �ExpressionElementRoler zSQL expression element�name�
Optional[str]r4 � Label[_T]c C r5 r6 r7 )r: rK r r r �label� s zExpressionElementRole.labelN)rK rL r4 rM )r r r r r' rN r r r r rJ � s rJ c @ r" )�
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InElementRoler z?IN expression list, SELECT construct, or bound parameter objectNr& r r r r rR � rH rR c @ r" )�JoinTargetRoler zGJoin target, typically a FROM expression, or ORM relationship attributeNr& r r r r rS � rH rS c @ s" e Zd ZU dZdZdZded< dS )�FromClauseRoler z2FROM expression, such as a Table or alias() objectF�bool�named_with_columnN)r r r r r' � _is_subqueryr! r r r r rT � s
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d d �ZdS dS )�AnonymizedFromClauseRoler NF)rK �flatrK rL rZ rU r4 r c C � d S r6 r )r: rK rZ r r r �_anonymous_fromclause� s z.AnonymizedFromClauseRole._anonymous_fromclause)rK rL rZ rU r4 r )r r r r r r\ r r r r rY � s ��rY c @ r" )�ReturnsRowsRoler zcRow returning expression such as a SELECT, a FROM clause, or an INSERT/UPDATE/DELETE with RETURNINGNr& r r r r r] � rH r] c @ s2 e Zd ZdZdZerejddd��ZdS ej ZdS ) �
StatementRoler z"Executable SQL or text() constructr4 r c C r[ r6 r r9 r r r �_propagate_attrs� s z StatementRole._propagate_attrsN)r4 r )
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r^ c @ s e Zd ZdZdZddd�ZdS ) �SelectStatementRoler z/SELECT construct or equivalent text() constructr4 r c C s t d��)NzFAll SelectStatementRole objects should implement a .subquery() method.r7 r9 r r r �subquery s �z SelectStatementRole.subqueryN)r4 r )r r r r r' rc r r r r rb � s rb c @ rB )�
HasCTERoler NrD r r r r rd rE rd c @ r" )� IsCTERoler z
CTE objectNr& r r r r re
r$ re c @ � e Zd ZdZdZdZdS )�CompoundElementRolezDSELECT statements inside a CompoundSelect, e.g. UNION, EXTRACT, etc.r z@SELECT construct for inclusion in a UNION or other set constructN�r r r r r r' r r r r rg s
�rg c @ rB )�DMLRoler NrD r r r r ri rE ri c @ r" )� DMLTableRoler z-subject table for an INSERT, UPDATE or DELETENr& r r r r rj r$ rj c @ r" )�
DMLColumnRoler z*SET/VALUES column expression or string keyNr& r r r r rk % r$ rk c @ rf )�
DMLSelectRolez@A SELECT statement embedded in DML, typically INSERT from SELECTr z-SELECT statement or equivalent textual objectNrh r r r r rl * s rl c @ rB )�DDLRoler NrD r r r r rm 1 rE rm c @ r" )�DDLExpressionRoler z)SQL expression element for DDL constraintNr& r r r r rn 5 r$ rn c @ r" )�DDLConstraintColumnRoler z:String column name or column expression for DDL constraintNr& r r r r ro : r$ ro c @ r" )�DDLReferredColumnRoler zBString column name or Column object for DDL foreign key constraintNr& r r r r rp ? rH rp N)C�
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