Clear Method (PgSqlSelectStatement)

In This Topic

Clears all parts of the PgSqlSelectStatement.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides NotOverridable Sub Clear()

public override void Clear()

Remarks

Call PgSqlSelectStatement to empty all properties of the PgSqlSelectStatement 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

PgSqlSelectStatement Class
PgSqlSelectStatement Members

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