Mysqlx::Expr Namespace Reference

Expressions. More...

Classes
struct	Array
	An array of expressions. More...
struct	ColumnIdentifier
	Column identifier. More...
struct	DocumentPathItem
	Document path item. More...
struct	Expr
	The "root" of the expression tree. More...
struct	FunctionCall
	Function call: func(a, b, "1", 3) More...
struct	Identifier
	Identifier: name, schame.name. More...
struct	Object
	An object (with expression values) More...
struct	Operator
	Operator: <<(a, b) More...

Detailed Description

Expressions.

Expression syntax

expr is the fundamental structure in various places of the SQL language:

• SELECT <expr> AS ...
• WHERE <expr>

The structures can be used to:

• build an Item-tree in the MySQL Server
• generate SQL from it
• use as filter condition in CRUD Find(), Update(), and Delete() calls.