Execute Method (SqlStatement)

In This Topic

Executes the statement and returns result set.

Syntax

Visual Basic
C#

'Declaration
 
Public Function Execute() As IDataReader

public IDataReader Execute()

Return Value

Result set returned by the statement execution.

Remarks

This method is an alternative to Execute and ExecuteNext methods. It allows you to execute statements individually in any order. Note that Execute of SqlStatement does not generate Error or Progress event.

Example

This sample shows how to retrieve collection of statements that make up the script and execute them one by one.

csharp

string script =
"DROP TABLE DEPT;"+
  "CREATE TABLE DEPT ("+
  "  DEPTNO NUMBER(38) NOT NULL,"+
  "  DNAME VARCHAR2(14),"+
  "  LOC VARCHAR2(13)"+
");"+
  "INSERT INTO DEPT VALUES (10,'ACCOUNTING','NEW YORK');"+
  "INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');"+
  "INSERT INTO DEPT VALUES (30,'SALES','CHICAGO');"+
  "INSERT INTO DEPT VALUES (40,'OPERATIONS','BOSTON');"+
  "SELECT * FROM DEPT";
OracleConnection myConn = new OracleConnection(
    "User Id=Scott;Password=tiger;Data Source=Ora;");
OracleScript myScript = new OracleScript(script,myConn);
SqlStatementCollection myColl = myScript.Statements;
IDataReader myReader;
myConn.Open();
foreach (SqlStatement myStatement in myColl)
{
  Console.WriteLine(myStatement.Text);
  try
  {
    myReader = myStatement.Execute();
    Console.WriteLine("  Records affected " + myReader.RecordsAffected); 
    while (myReader.Read()) 
    { 
      Console.WriteLine(myReader.GetString(0)); 
    } 
    myReader.Close(); 
    Console.WriteLine();
  }
  catch
  {
    Console.WriteLine("  Failed");
  }
}
myConn.Close();

Visual Basic

Dim script As String = _
  "DROP TABLE DEPT;" + _
  "CREATE TABLE DEPT (" + _
  "  DEPTNO NUMBER(38) NOT NULL," + _
  "  DNAME VARCHAR2(14)," + _
  "  LOC VARCHAR2(13)" + _
  ");" + _
    "INSERT INTO DEPT VALUES (10,'ACCOUNTING','NEW YORK');" + _
    "INSERT INTO DEPT VALUES (20,'RESEARCH','DALLAS');" + _
    "INSERT INTO DEPT VALUES (30,'SALES','CHICAGO');" + _
    "INSERT INTO DEPT VALUES (40,'OPERATIONS','BOSTON');" + _
    "SELECT * FROM DEPT"
Dim myConn As OracleConnection = New OracleConnection( _
    "User Id=Scott;Password=tiger;Data Source=Ora;")
Dim myScript As OracleScript = New OracleScript(script, myConn)
Dim myColl As SqlStatementCollection = myScript.Statements
Dim myReader As IDataReader
myConn.Open()
For Each myStatement As SqlStatement In myColl
  Console.WriteLine(myStatement.Text)
  Try
    myReader = myStatement.Execute()
    Console.WriteLine("  Records affected " & myReader.RecordsAffected)
    While myReader.Read()
      Console.WriteLine(myReader.GetString(0))
    End While
    myReader.Close()
    Console.WriteLine()
  Catch ex As Exception
    Console.WriteLine("  Failed")
  End Try
Next myStatement
myConn.Close()

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

SqlStatement Class
SqlStatement Members
Text Property

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