Mysqlx::Expr::Expr Struct Reference

The "root" of the expression tree. More...

Public Types
enum	Type {   IDENT = 1 , LITERAL = 2 , VARIABLE = 3 , FUNC_CALL = 4 ,   OPERATOR = 5 , PLACEHOLDER = 6 , OBJECT = 7 , ARRAY = 8 }

Public Attributes
required Type	type = 1
optional ColumnIdentifier	identifier = 2
optional string	variable = 3
optional Mysqlx::Datatypes::Scalar	literal = 4
optional FunctionCall	function_call = 5
optional Operator	operator=6
optional uint32	position = 7
optional Object	object = 8
optional Array	array = 9

Detailed Description

The "root" of the expression tree.

If expression type is PLACEHOLDER, then it refers to the value of a parameter specified when executing a statement (see args field of StmtExecute command). Field position (which must be present for such an expression) gives 0-based position of the parameter in the parameter list.

production list

expr: operator |
    : identifier |
    : function_call |
    : variable |
    : literal |
    : object |
    : array |
    : placeholder

Member Enumeration Documentation

Type

enum Mysqlx::Expr::Expr::Type

Enumerator
IDENT
LITERAL
VARIABLE
FUNC_CALL
OPERATOR
PLACEHOLDER
OBJECT
ARRAY

Member Data Documentation

array

optional Array Mysqlx::Expr::Expr::array = 9

function_call

optional FunctionCall Mysqlx::Expr::Expr::function_call = 5

identifier

optional ColumnIdentifier Mysqlx::Expr::Expr::identifier = 2

literal

optional Mysqlx::Datatypes::Scalar Mysqlx::Expr::Expr::literal = 4

object

optional Object Mysqlx::Expr::Expr::object = 8

operator=6

optional Operator Mysqlx::Expr::Expr::operator=6

position

optional uint32 Mysqlx::Expr::Expr::position = 7

type

required Type Mysqlx::Expr::Expr::type = 1

variable

optional string Mysqlx::Expr::Expr::variable = 3

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The documentation for this struct was generated from the following file:

• plugin/x/protocol/protobuf/mysqlx_expr.proto