76 lines
3.7 KiB
Plaintext
76 lines
3.7 KiB
Plaintext
|
QueryLanguage = SelectStatement | UpdateStatement | DeleteStatement
|
||
|
|
|
||
|
|
SelectStatement = [SelectClause] FromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause] [LimitClause]
|
||
|
|
UpdateStatement = UpdateClause [WhereClause] [OrderByClause] [LimitClause]
|
||
|
|
DeleteStatement = DeleteClause [WhereClause] [OrderByClause] [LimitClause]
|
||
|
|
|
||
|
|
Subselect = SimpleSelectClause FromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause] [LimitClause] [OffsetClause]
|
||
|
|
SelectClause = "SELECT" ["ALL" | "DISTINCT"] SelectExpression {"," SelectExpression}
|
||
|
|
SimpleSelectClause = "SELECT" ["ALL" | "DISTINCT"] SelectExpression
|
||
|
|
DeleteClause = "DELETE" "FROM" RangeVariableDeclaration
|
||
|
|
WhereClause = "WHERE" ConditionalExpression
|
||
|
|
FromClause = "FROM" IdentificationVariableDeclaration {"," IdentificationVariableDeclaration}
|
||
|
|
HavingClause = "HAVING" ConditionalExpression
|
||
|
|
GroupByClause = "GROUP" "BY" GroupByItem {"," GroupByItem}
|
||
|
|
OrderByClause = "ORDER" "BY" OrderByItem {"," OrderByItem}
|
||
|
|
LimitClause = "LIMIT" Expression ["OFFSET" Expression]
|
||
|
|
UpdateClause = "UPDATE" RangeVariableDeclaration "SET" UpdateItem {"," UpdateItem}
|
||
|
|
|
||
|
|
OrderByItem = PathExpression ["ASC" | "DESC"]
|
||
|
|
GroupByItem = PathExpression
|
||
|
|
UpdateItem = PathExpression "=" (Expression | "NULL")
|
||
|
|
|
||
|
|
IdentificationVariableDeclaration = RangeVariableDeclaration {Join}
|
||
|
|
RangeVariableDeclaration = PathExpression [["AS" ] identifier<identification-variable>]
|
||
|
|
|
||
|
|
Join = ["LEFT" | "INNER"] "JOIN" PathExpression "AS" identifier
|
||
|
|
|
||
|
|
ConditionalExpression = ConditionalTerm {"OR" ConditionalTerm}
|
||
|
|
ConditionalTerm = ConditionalFactor {"AND" ConditionalFactor}
|
||
|
|
ConditionalFactor = ["NOT"] ConditionalPrimary
|
||
|
|
ConditionalPrimary = SimpleConditionalExpression | "(" ConditionalExpression ")"
|
||
|
|
SimpleConditionalExpression
|
||
|
|
= Expression (ComparisonExpression | BetweenExpression | LikeExpression
|
||
|
|
| InExpression | NullComparisonExpression) | ExistsExpression
|
||
|
|
|
||
|
|
Atom = string-literal | numeric-constant | input-parameter
|
||
|
|
|
||
|
|
Expression = Expression {("+" | "-" | "*" | "/") Expression}
|
||
|
|
Expression = ("+" | "-") Expression
|
||
|
|
Expression = "(" Expression ")"
|
||
|
|
Expression = PathExpression | Atom | | Function | AggregateExpression
|
||
|
|
|
||
|
|
SelectExpression = (Expression | "(" Subselect ")" ) [["AS"] identifier]
|
||
|
|
PathExpression = identifier {"." identifier}
|
||
|
|
|
||
|
|
AggregateExpression = ("AVG" | "MAX" | "MIN" | "SUM") "(" ["DISTINCT"] Expression ")"
|
||
|
|
| "COUNT" "(" ["DISTINCT"] (Expression | "*") ")"
|
||
|
|
|
||
|
|
QuantifiedExpression = ("ALL" | "ANY" | "SOME") "(" Subselect ")"
|
||
|
|
BetweenExpression = ["NOT"] "BETWEEN" Expression "AND" Expression
|
||
|
|
ComparisonExpression = ComparisonOperator ( QuantifiedExpression | Expression | "(" Subselect ")" )
|
||
|
|
InExpression = ["NOT"] "IN" "(" (Atom {"," Atom} | Subselect) ")"
|
||
|
|
LikeExpression = ["NOT"] "LIKE" Expression ["ESCAPE" escape_character]
|
||
|
|
NullComparisonExpression = "IS" ["NOT"] "NULL"
|
||
|
|
ExistsExpression = ["NOT"] "EXISTS" "(" Subselect ")"
|
||
|
|
|
||
|
|
|
||
|
|
Function =
|
||
|
|
"CURRENT_DATE" |
|
||
|
|
"CURRENT_TIME" |
|
||
|
|
"CURRENT_TIMESTAMP" |
|
||
|
|
"LENGTH" "(" Expression ")" |
|
||
|
|
"LOCATE" "(" Expression "," Expression ["," Expression] ")" |
|
||
|
|
"ABS" "(" Expression ")" |
|
||
|
|
"SQRT" "(" Expression ")" |
|
||
|
|
"MOD" "(" Expression "," Expression ")" |
|
||
|
|
"SIZE" "(" Expression ")" |
|
||
|
|
"CONCAT" "(" Expression "," Expression ")" |
|
||
|
|
"SUBSTRING" "(" Expression "," Expression "," "Expression" ")" |
|
||
|
|
"TRIM" "(" [[TrimSpecification] [trim_character] "FROM"] string_primary ")" |
|
||
|
|
"LOWER" "(" string_primary ")" |
|
||
|
|
"UPPER" "(" string_primary ")" |
|
||
|
|
identifier "(" [Expression {"," Expression}]")" // Custom function
|
||
|
|
|
||
|
|
TrimSpecification = "LEADING" | "TRAILING" | "BOTH"
|