Columns Property (SelectStatement)

In This Topic

Contains list of columns and expressions used in the select-list of the current SelectStatement object.

Syntax

Visual Basic
C#

'Declaration
 
Public ReadOnly Property Columns As SelectColumnCollection

public SelectColumnCollection Columns {get;}

Property Value

A SelectColumnCollection that represents list of columns and expressions used in the SELECT clause.

Example

The following example demonstrates how to use the Columns property.

csharp

private void RefreshStatement(MySqlSelectStatement stmt)
{
  stmt.Clear();
  stmt.Columns.Add(new SelectColumn("ENAME"));
  stmt.Columns.Add(new SelectColumn("", "emp", "JOB", "j"));
  stmt.Columns.Add(new SelectColumn("test", "", "emp", "HIREDATE", "hd"));

  stmt.Tables.Add(new SelectTable("emp"));

  //select ENAME,emp.JOB j,Test.emp.HIREDATE hd from emp
  string queryText = stmt.ToString();
}

Visual Basic

Private Sub RefreshStatement(ByVal stmt As MySqlSelectStatement)
  stmt.Clear()
  stmt.Columns.Add(New SelectColumn("ENAME"))
  stmt.Columns.Add(New SelectColumn("", "emp", "JOB", "j"))
  stmt.Columns.Add(New SelectColumn("test", "", "emp", "HIREDATE", "hd"))
  stmt.Tables.Add(New SelectTable("emp"))
  'select ENAME,emp.JOB j,Test.emp.HIREDATE hd from emp
  Dim queryText As String = stmt.ToString
End Sub

Reference

SelectStatement Class
SelectStatement Members

Send Feedback