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manual/new/docs/en/dql-doctrine-query-language/bnf.txt

+<code>
+QL_statement ::= select_statement | update_statement | delete_statement
+select_statement ::= select_clause from_clause [where_clause] [groupby_clause]
+[having_clause] [orderby_clause]
+update_statement ::= update_clause [where_clause]
+delete_statement ::= delete_clause [where_clause]
+from_clause ::=
+FROM identification_variable_declaration
+{, {identification_variable_declaration | collection_member_declaration}}*
+identification_variable_declaration ::= range_variable_declaration { join | fetch_join }*
+range_variable_declaration ::= abstract_schema_name [AS ] identification_variable
+join ::= join_spec join_association_path_expression [AS ] identification_variable
+fetch_join ::= join_specFETCH join_association_path_expression
+association_path_expression ::=
+collection_valued_path_expression | single_valued_association_path_expression
+join_spec::= [LEFT [OUTER ] |INNER ]JOIN
+join_association_path_expression ::= join_collection_valued_path_expression |
+join_single_valued_association_path_expression
+join_collection_valued_path_expression::=
+identification_variable.collection_valued_association_field
+join_single_valued_association_path_expression::=
+identification_variable.single_valued_association_field
+collection_member_declaration ::=
+IN ( collection_valued_path_expression) [AS ] identification_variable
+single_valued_path_expression ::=
+state_field_path_expression | single_valued_association_path_expression
+state_field_path_expression ::=
+{identification_variable | single_valued_association_path_expression}.state_field
+single_valued_association_path_expression ::=
+identification_variable.{single_valued_association_field.}* single_valued_association_field
+collection_valued_path_expression ::=
+identification_variable.{single_valued_association_field.}*collection_valued_association_field
+state_field ::= {embedded_class_state_field.}*simple_state_field
+update_clause ::=UPDATE abstract_schema_name [[AS ] identification_variable]
+SET update_item {, update_item}*
+update_item ::= [identification_variable.]{state_field | single_valued_association_field} =
+new_value
+new_value ::=
+simple_arithmetic_expression |
+string_primary |
+datetime_primary |
 
+boolean_primary |
+enum_primary
+simple_entity_expression |
+NULL
+delete_clause ::=DELETE FROM abstract_schema_name [[AS ] identification_variable]
+select_clause ::=SELECT [DISTINCT ] select_expression {, select_expression}*
+select_expression ::=
+single_valued_path_expression |
+aggregate_expression |
+identification_variable |
+OBJECT( identification_variable) |
+constructor_expression
+constructor_expression ::=
+NEW constructor_name( constructor_item {, constructor_item}*)
+constructor_item ::= single_valued_path_expression | aggregate_expression
+aggregate_expression ::=
+{AVG |MAX |MIN |SUM }( [DISTINCT ] state_field_path_expression) |
+COUNT ( [DISTINCT ] identification_variable | state_field_path_expression |
+single_valued_association_path_expression)
+where_clause ::=WHERE conditional_expression
+groupby_clause ::=GROUP BY groupby_item {, groupby_item}*
+groupby_item ::= single_valued_path_expression | identification_variable
+having_clause ::=HAVING conditional_expression
+orderby_clause ::=ORDER BY orderby_item {, orderby_item}*
+orderby_item ::= state_field_path_expression [ASC |DESC ]
+subquery ::= simple_select_clause subquery_from_clause [where_clause]
+[groupby_clause] [having_clause]
+subquery_from_clause ::=
+FROM subselect_identification_variable_declaration
+{, subselect_identification_variable_declaration}*
+subselect_identification_variable_declaration ::=
+identification_variable_declaration |
+association_path_expression [AS ] identification_variable |
+collection_member_declaration
+simple_select_clause ::=SELECT [DISTINCT ] simple_select_expression
+simple_select_expression::=
+single_valued_path_expression |
+aggregate_expression |
+identification_variable
+conditional_expression ::= conditional_term | conditional_expressionOR conditional_term
+conditional_term ::= conditional_factor | conditional_termAND conditional_factor
+conditional_factor ::= [NOT ] conditional_primary
+conditional_primary ::= simple_cond_expression |( conditional_expression)
+simple_cond_expression ::=
+comparison_expression |
+between_expression |
+like_expression |
+in_expression |
+null_comparison_expression |
+empty_collection_comparison_expression |
+
+collection_member_expression |
+exists_expression
+between_expression ::=
+arithmetic_expression [NOT ]BETWEEN
+arithmetic_expressionAND arithmetic_expression |
+string_expression [NOT ]BETWEEN string_expressionAND string_expression |
+datetime_expression [NOT ]BETWEEN
+datetime_expressionAND datetime_expression
+in_expression ::=
+state_field_path_expression [NOT ]IN ( in_item {, in_item}* | subquery)
+in_item ::= literal | input_parameter
+like_expression ::=
+string_expression [NOT ]LIKE pattern_value [ESCAPE escape_character]
+null_comparison_expression ::=
+{single_valued_path_expression | input_parameter}IS [NOT ] NULL
+empty_collection_comparison_expression ::=
+collection_valued_path_expressionIS [NOT] EMPTY
+collection_member_expression ::= entity_expression
+[NOT ]MEMBER [OF ] collection_valued_path_expression
+exists_expression::= [NOT ]EXISTS (subquery)
+all_or_any_expression ::= {ALL |ANY |SOME } (subquery)
+comparison_expression ::=
+string_expression comparison_operator {string_expression | all_or_any_expression} |
+boolean_expression {= |<> } {boolean_expression | all_or_any_expression} |
+enum_expression {= |<> } {enum_expression | all_or_any_expression} |
+datetime_expression comparison_operator
+{datetime_expression | all_or_any_expression} |
+entity_expression {= |<> } {entity_expression | all_or_any_expression} |
+arithmetic_expression comparison_operator
+{arithmetic_expression | all_or_any_expression}
+comparison_operator ::== |> |>= |< |<= |<>
+arithmetic_expression ::= simple_arithmetic_expression | (subquery)
+simple_arithmetic_expression ::=
+arithmetic_term | simple_arithmetic_expression {+ |- } arithmetic_term
+arithmetic_term ::= arithmetic_factor | arithmetic_term {* |/ } arithmetic_factor
+arithmetic_factor ::= [{+ |- }] arithmetic_primary
+arithmetic_primary ::=
+state_field_path_expression |
+numeric_literal |
+(simple_arithmetic_expression) |
+input_parameter |
+functions_returning_numerics |
+aggregate_expression
+string_expression ::= string_primary | (subquery)
+string_primary ::=
+state_field_path_expression |
+string_literal |
+input_parameter |
+functions_returning_strings |
+aggregate_expression
+
+datetime_expression ::= datetime_primary | (subquery)
+datetime_primary ::=
+state_field_path_expression |
+input_parameter |
+functions_returning_datetime |
+aggregate_expression
+boolean_expression ::= boolean_primary | (subquery)
+boolean_primary ::=
+state_field_path_expression |
+boolean_literal |
+input_parameter |
+enum_expression ::= enum_primary | (subquery)
+enum_primary ::=
+state_field_path_expression |
+enum_literal |
+input_parameter |
+entity_expression ::=
+single_valued_association_path_expression | simple_entity_expression
+simple_entity_expression ::=
+identification_variable |
+input_parameter
+functions_returning_numerics::=
+LENGTH( string_primary) |
+LOCATE( string_primary, string_primary[, simple_arithmetic_expression]) |
+ABS( simple_arithmetic_expression) |
+SQRT( simple_arithmetic_expression) |
+MOD( simple_arithmetic_expression, simple_arithmetic_expression) |
+SIZE( collection_valued_path_expression)
+functions_returning_datetime ::=
+  CURRENT_DATE |
+  CURRENT_TIME |
+  CURRENT_TIMESTAMP
+functions_returning_strings ::=
+CONCAT( string_primary, string_primary) |
+SUBSTRING( string_primary,
+simple_arithmetic_expression, simple_arithmetic_expression)|
+TRIM( [[trim_specification] [trim_character]FROM ] string_primary) |
+LOWER( string_primary) |
+UPPER( string_primary)
+trim_specification ::=LEADING | TRAILING | BOTH
+</code>