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feat: add sql grammar with pratt parser and tests (#983)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,190 @@ | ||
| Command = _{ SOI ~ (Query | ExplainQuery | DDL | ACL) ~ EOF } | ||
|
|
||
| ACL = _{ DropRole | DropUser | CreateRole | CreateUser | AlterUser | GrantPrivilege | RevokePrivilege } | ||
| CreateUser = { | ||
| ^"create" ~ ^"user" ~ Identifier ~ (^"with")? ~ ^"password" ~ SingleQuotedString ~ | ||
| AuthMethod? | ||
| } | ||
| AlterUser = { | ||
| ^"alter" ~ ^"user" ~ Identifier ~ (^"with")? ~ AlterOption | ||
| } | ||
| AlterOption = _{ AlterLogin | AlterNoLogin | AlterPassword } | ||
| AlterLogin = { ^"login" } | ||
| AlterNoLogin = { ^"nologin" } | ||
| AlterPassword = { ^"password" ~ SingleQuotedString ~ AuthMethod? } | ||
| AuthMethod = { ^"using" ~ (ChapSha1 | Md5 | Ldap) } | ||
| ChapSha1 = { ^"chap-sha1" } | ||
| Md5 = { ^"md5" } | ||
| Ldap = { ^"ldap" } | ||
| DropUser = { ^"drop" ~ ^"user" ~ Identifier } | ||
| CreateRole = { ^"create" ~ ^"role" ~ Identifier } | ||
| DropRole = { ^"drop" ~ ^"role" ~ Identifier } | ||
| GrantPrivilege = { ^"grant" ~ PrivBlock ~ ^"to" ~ Identifier } | ||
| RevokePrivilege = { ^"revoke" ~ PrivBlock ~ ^"from" ~ Identifier } | ||
| PrivBlock = _{ PrivBlockPrivilege | PrivBlockRolePass } | ||
| PrivBlockPrivilege = {Privilege ~ (PrivBlockUser | PrivBlockSpecificUser | PrivBlockRole | ||
| | PrivBlockSpecificRole | PrivBlockTable | PrivBlockSpecificTable)} | ||
| PrivBlockUser = { ^"user" } | ||
| PrivBlockSpecificUser = { ^"on" ~ ^"user" ~ Identifier } | ||
| PrivBlockRole = { ^"role" } | ||
| PrivBlockSpecificRole = { ^"on" ~ ^"role" ~ Identifier } | ||
| PrivBlockTable = { ^"table" } | ||
| PrivBlockSpecificTable = { ^"on" ~ ^"table" ~ Identifier } | ||
| PrivBlockRolePass = { Identifier } | ||
| Privilege = _{ PrivilegeRead | PrivilegeWrite | PrivilegeExecute | | ||
| PrivilegeCreate | PrivilegeAlter | PrivilegeDrop | | ||
| PrivilegeSession | PrivilegeUsage } | ||
| PrivilegeAlter = { ^"alter" } | ||
| PrivilegeCreate = { ^"create" } | ||
| PrivilegeDrop = { ^"drop" } | ||
| PrivilegeExecute = { ^"execute" } | ||
| PrivilegeRead = { ^"read" } | ||
| PrivilegeSession = { ^"session" } | ||
| PrivilegeUsage = { ^"usage" } | ||
| PrivilegeWrite = { ^"write" } | ||
|
|
||
| DDL = _{ CreateTable | DropTable | CreateProc } | ||
| CreateTable = { | ||
| ^"create" ~ ^"table" ~ Identifier ~ | ||
| "(" ~ Columns ~ "," ~ PrimaryKey ~ ")" ~ | ||
| Distribution | ||
| } | ||
| Columns = { ColumnDef ~ ("," ~ ColumnDef)* } | ||
| ColumnDef = { Identifier ~ ColumnDefType ~ ColumnDefIsNull? } | ||
| ColumnDefIsNull = { NotFlag? ~ ^"null" } | ||
| PrimaryKey = { | ||
| ^"primary" ~ ^"key" ~ | ||
| "(" ~ Identifier ~ ("," ~ Identifier)* ~ ")" | ||
| } | ||
| Distribution = { ^"distributed" ~ (Global | Sharding) } | ||
| Global = { ^"globally" } | ||
| Sharding = { ^"by" ~ "(" ~ Identifier ~ ("," ~ Identifier)* ~ ")"} | ||
| DropTable = { ^"drop" ~ ^"table" ~ Identifier } | ||
|
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||
| CreateProc = { | ||
| ^"create" ~ ^"procedure" ~ Identifier ~ | ||
| "(" ~ ProcParams? ~ ")" ~ (^"language" ~ ProcLanguage)? ~ | ||
| ((^"as" ~ "$$" ~ ProcBody ~ "$$") | (^"begin" ~ "atomic" ~ ProcBody ~ "end")) | ||
| } | ||
| ProcParams = { ProcParamDef ~ ("," ~ ProcParamDef)* } | ||
| ProcParamDef = { ColumnDefType } | ||
| ProcLanguage = { SQL } | ||
| SQL = { ^"sql" } | ||
| ProcBody = { (Insert | Update | Delete) } | ||
|
|
||
| ExplainQuery = _{ Explain } | ||
| Explain = { ^"explain" ~ Query } | ||
|
|
||
| Query = { (SelectWithOptionalContinuation | Values | Insert | Update | Delete) } | ||
| SelectWithOptionalContinuation = { Select ~ (ExceptContinuation | UnionAllContinuation)? } | ||
| ExceptContinuation = { ((^"except" ~ ^"distinct") | ^"except") ~ Select } | ||
| UnionAllContinuation = { ^"union" ~ ^"all" ~ Select } | ||
| Select = { | ||
| ^"select" ~ Projection ~ ^"from" ~ Scan ~ | ||
| Join? ~ WhereClause? ~ | ||
| (^"group" ~ ^"by" ~ GroupBy)? ~ | ||
| (^"having" ~ Having)? | ||
| } | ||
| Projection = { Distinct? ~ ProjectionElement ~ ("," ~ ProjectionElement)* } | ||
| ProjectionElement = _{ Asterisk | Column } | ||
| Column = { Expr ~ ((^"as")? ~ Identifier)? } | ||
| Asterisk = { "*" } | ||
| WhereClause = _{ ^"where" ~ Selection } | ||
| Selection = { Expr } | ||
| Scan = { (Identifier | SubQuery) ~ ((^"as")? ~ Identifier)? } | ||
| Join = { JoinKind? ~ ^"join" ~ Scan ~ ^"on" ~ Expr } | ||
| JoinKind = _{ ( InnerJoinKind | LeftJoinKind ) } | ||
| InnerJoinKind = { ^"inner" } | ||
| LeftJoinKind = { ^"left" ~ (^"outer")? } | ||
| GroupBy = { Expr ~ ("," ~ Expr)* } | ||
| Having = { Expr } | ||
| SubQuery = { "(" ~ (SelectWithOptionalContinuation | Values) ~ ")" } | ||
| Insert = { ^"insert" ~ ^"into" ~ Identifier ~ ("(" ~ TargetColumns ~ ")")? ~ (Values | Select) ~ OnConflict? } | ||
| TargetColumns = { Identifier ~ ("," ~ Identifier)* } | ||
| OnConflict = _{ ^"on conflict" ~ ^"do" ~ (DoNothing | DoReplace | DoFail) } | ||
| DoReplace = { ^"replace" } | ||
| DoNothing = { ^"nothing" } | ||
| DoFail = { ^"fail" } | ||
| Update = { ^"update" ~ Identifier ~ ^"set" ~ UpdateList ~ (UpdateFrom | WhereClause)? } | ||
| UpdateList = { UpdateItem ~ ("," ~ UpdateItem)* } | ||
| UpdateItem = { Identifier ~ "=" ~ Expr } | ||
| UpdateFrom = _{ ^"from" ~ Scan ~ (^"where" ~ Expr)? } | ||
| Values = { ^"values" ~ Row ~ ("," ~ Row)* } | ||
| Delete = { ^"delete" ~ ^"from" ~ Identifier ~ (^"where" ~ DeleteFilter)? } | ||
| DeleteFilter = { Expr } | ||
|
|
||
| Identifier = @{ DoubleQuotedIdentifier | IdentifierInner } | ||
| DoubleQuotedIdentifier = @{ ("\"" ~ IdentifierInner ~ "\"") } | ||
| IdentifierInner = @{ !(Keyword ~ ("(" | WHITESPACE | "," | EOF)) ~ (IdentifierNonDigit ~ (IdentifierNonDigit | ASCII_DIGIT)*) } | ||
| IdentifierNonDigit = _{ ('a'..'z' | 'A' .. 'Z' | 'А' .. 'Я' | 'а' .. 'я' | "-" | "_") } | ||
| Keyword = { ^"left" | ^"having" | ^"not" | ^"inner" | ^"group" | ||
| | ^"on" | ^"join" | ^"from" | ^"exists" | ^"except" | ||
| | ^"union" | ^"where" | ^"distinct" | ^"between" | ^"option" | ||
| | ^"values"} | ||
|
|
||
| Expr = { ExprAtomValue ~ (ExprInfixOp ~ ExprAtomValue)* } | ||
| ExprInfixOp = _{ Between | ArithInfixOp | CmpInfixOp | ConcatInfixOp | And | Or } | ||
| Between = { NotFlag? ~ ^"between" } | ||
| And = { ^"and" } | ||
| Or = { ^"or" } | ||
| ConcatInfixOp = { "||" } | ||
| ArithInfixOp = _{ Add | Subtract | Multiply | Divide } | ||
| Add = { "+" } | ||
| Subtract = { "-" } | ||
| Multiply = { "*" } | ||
| Divide = { "/" } | ||
| CmpInfixOp = _{ NotEq | GtEq | Gt | LtEq | Lt | Eq | Lt | In } | ||
| Eq = { "=" } | ||
| Gt = { ">" } | ||
| GtEq = { ">=" } | ||
| Lt = { "<" } | ||
| LtEq = { "<=" } | ||
| NotEq = { "<>" | "!=" } | ||
| In = { NotFlag? ~ ^"in" } | ||
| ExprAtomValue = _{ UnaryNot* ~ AtomicExpr ~ IsNullPostfix? } | ||
| UnaryNot = @{ NotFlag } | ||
| IsNullPostfix = { ^"is" ~ NotFlag? ~ ^"null" } | ||
| AtomicExpr = _{ Literal | Parameter | Cast | IdentifierWithOptionalContinuation | ExpressionInParentheses | UnaryOperator | SubQuery | Row } | ||
| Literal = _{ True | False | Null | Double | Decimal | Unsigned | Integer | SingleQuotedString } | ||
| True = { ^"true" } | ||
| False = { ^"false" } | ||
| Null = { ^"null" } | ||
| Decimal = @{ Integer ~ ("." ~ ASCII_DIGIT*) } | ||
| Double = @{ Integer ~ ("." ~ ASCII_DIGIT*)? ~ (^"e" ~ Integer) } | ||
| Integer = @{ ("+" | "-")? ~ ASCII_DIGIT+ } | ||
| Unsigned = @{ ASCII_DIGIT+ } | ||
| SingleQuotedString = @{ OnlyQuotesSequence | AnythingButQuotesSequence } | ||
| OnlyQuotesSequence = @{ ("'" ~ "'")+ } | ||
| AnythingButQuotesSequence = @{ "'" ~ (!("'") ~ ANY)* ~ "'" } | ||
| Parameter = { PgParameter | QuestionParameter } | ||
| QuestionParameter = @{ "?" } | ||
| PgParameter = { "$" ~ Unsigned } | ||
| IdentifierWithOptionalContinuation = { Identifier ~ (ReferenceContinuation | FunctionInvocationContinuation)? } | ||
| ReferenceContinuation = { "." ~ Identifier } | ||
| FunctionInvocationContinuation = { "(" ~ (CountAsterisk | FunctionArgs)? ~ ")" } | ||
| FunctionArgs = { Distinct? ~ (Expr ~ ("," ~ Expr)*)? } | ||
| CountAsterisk = { "*" } | ||
| ExpressionInParentheses = { "(" ~ Expr ~ ")" } | ||
| Cast = { ^"cast" ~ "(" ~ Expr ~ ^"as" ~ TypeCast ~ ")" } | ||
| TypeCast = _{ TypeAny | ColumnDefType } | ||
| ColumnDefType = { TypeBool | TypeDecimal | TypeDouble | TypeInt | TypeNumber | ||
| | TypeScalar | TypeString | TypeText | TypeUnsigned | TypeVarchar } | ||
| TypeAny = { ^"any" } | ||
| TypeBool = { (^"boolean" | ^"bool") } | ||
| TypeDecimal = { ^"decimal" } | ||
| TypeDouble = { ^"double" } | ||
| TypeInt = { (^"integer" | ^"int") } | ||
| TypeNumber = { ^"number" } | ||
| TypeScalar = { ^"scalar" } | ||
| TypeString = { ^"string" } | ||
| TypeText = { ^"text" } | ||
| TypeUnsigned = { ^"unsigned" } | ||
| TypeVarchar = { ^"varchar" ~ "(" ~ Unsigned ~ ")" } | ||
| UnaryOperator = _{ Exists } | ||
| Exists = { NotFlag? ~ ^"exists" ~ SubQuery } | ||
| Row = { "(" ~ Expr ~ ("," ~ Expr)* ~ ")" } | ||
|
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||
| Distinct = { ^"distinct" } | ||
| NotFlag = { ^"not" } | ||
| EOF = { EOI | ";" } | ||
| WHITESPACE = _{ " " | "\t" | "\n" | "\r\n" } |
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