Table of Contents

Class QueryColumn

Namespace
CMS.DataEngine
Assembly
CMS.DataEngine.dll

Simple query column e.g. "DocumentName" / "DocumentName AS Name"

public sealed class QueryColumn : SelectQueryColumnBase<QueryColumn>, IQueryParameters<QueryColumn>, IQueryColumn, IQueryExpression, IQueryParameters, IQueryObjectWithValue, IQueryObject
Inheritance
object
QueryColumn
Implements
Inherited Members
Extension Methods

Constructors

QueryColumn()

Constructor

public QueryColumn()

QueryColumn(string)

Constructor

public QueryColumn(string columnName)

Parameters

columnName string

Column name

Remarks

FromExpression(string) for the difference how the created column looks like when you name the columns "A as B" in this constructor or in the given method

Properties

IsSingleColumn

Returns true if this column represents a single column

public override bool IsSingleColumn { get; }

Property Value

bool

Methods

Alias(string, string)

Creates a query column from given combination of column name and alias.

public static QueryColumn Alias(string columnName, string alias)

Parameters

columnName string

Name of the selected column.

alias string

Alias to be used.

Returns

QueryColumn

Exceptions

ArgumentException

In case that provided column name or alias is null or empty string.

FromExpression(string)

Creates a query column from the given expression.

public static QueryColumn FromExpression(string expression)

Parameters

expression string

Column expression.

Returns

QueryColumn

GetValueExpression()

Gets the value expression of the columns

protected override string GetValueExpression()

Returns

string