Clear Method (SelectStatement)

In This Topic

Clears all parts of the SelectStatement.

Syntax

Visual Basic
C#

'Declaration
 
Public Overridable Sub Clear()

public virtual void Clear()

Remarks

Call Clear to empty all properties of the SelectStatement object.

Example

The following example demonstrates how to use the Clear method.

csharp

private void RefreshStatement(PgSqlSelectStatement 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 PgSqlSelectStatement)
  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

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