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