'3. Implementation/DATABASE'에 해당되는 글 23건
- 2008.06.28 Connector/ODBC Programming
- 2008.06.28 Using Connector/ODBC with Crystal Reports
- 2008.06.28 Connector/ODBC Examples
Connector/ODBC Programming
23.1.5.7. Connector/ODBC Programming
With a suitable ODBC Manager and the Connector/ODBC driver installed, any programming language or environment that can support ODBC should be able to connect to a MySQL database through Connector/ODBC.
This includes, but is certainly not limited to, Microsoft support languages (including Visual Basic, C# and interfaces such as ODBC.NET), Perl (through the DBI module, and the DBD::ODBC driver).
23.1.5.7.1. Using Connector/ODBC with Visual Basic Using ADO, DAO and RDO
This section contains simple examples of the use of MySQL ODBC 3.51 Driver with ADO, DAO and RDO.
23.1.5.7.1.1. ADO: rs.addNew
, rs.delete
, and rs.update
The following ADO (ActiveX Data Objects) example creates a table my_ado
and demonstrates the use of rs.addNew
, rs.delete
, and rs.update
.
Private Sub myodbc_ado_Click() Dim conn As ADODB.Connection Dim rs As ADODB.Recordset Dim fld As ADODB.Field Dim sql As String 'connect to MySQL server using MySQL ODBC 3.51 Driver Set conn = New ADODB.Connection conn.ConnectionString = "DRIVER={MySQL ODBC 3.51 Driver};"_ & "SERVER=localhost;"_ & " DATABASE=test;"_ & "UID=venu;PWD=venu; OPTION=3" conn.Open 'create table conn.Execute "DROP TABLE IF EXISTS my_ado" conn.Execute "CREATE TABLE my_ado(id int not null primary key, name varchar(20)," _ & "txt text, dt date, tm time, ts timestamp)" 'direct insert conn.Execute "INSERT INTO my_ado(id,name,txt) values(1,100,'venu')" conn.Execute "INSERT INTO my_ado(id,name,txt) values(2,200,'MySQL')" conn.Execute "INSERT INTO my_ado(id,name,txt) values(3,300,'Delete')" Set rs = New ADODB.Recordset rs.CursorLocation = adUseServer 'fetch the initial table .. rs.Open "SELECT * FROM my_ado", conn Debug.Print rs.RecordCount rs.MoveFirst Debug.Print String(50, "-") & "Initial my_ado Result Set " & String(50, "-") For Each fld In rs.Fields Debug.Print fld.Name, Next Debug.Print Do Until rs.EOF For Each fld In rs.Fields Debug.Print fld.Value, Next rs.MoveNext Debug.Print Loop rs.Close 'rs insert rs.Open "select * from my_ado", conn, adOpenDynamic, adLockOptimistic rs.AddNew rs!Name = "Monty" rs!txt = "Insert row" rs.Update rs.Close 'rs update rs.Open "SELECT * FROM my_ado" rs!Name = "update" rs!txt = "updated-row" rs.Update rs.Close 'rs update second time.. rs.Open "SELECT * FROM my_ado" rs!Name = "update" rs!txt = "updated-second-time" rs.Update rs.Close 'rs delete rs.Open "SELECT * FROM my_ado" rs.MoveNext rs.MoveNext rs.Delete rs.Close 'fetch the updated table .. rs.Open "SELECT * FROM my_ado", conn Debug.Print rs.RecordCount rs.MoveFirst Debug.Print String(50, "-") & "Updated my_ado Result Set " & String(50, "-") For Each fld In rs.Fields Debug.Print fld.Name, Next Debug.Print Do Until rs.EOF For Each fld In rs.Fields Debug.Print fld.Value, Next rs.MoveNext Debug.Print Loop rs.Close conn.Close End Sub
23.1.5.7.1.2. DAO: rs.addNew
, rs.update
, and Scrolling
The following DAO (Data Access Objects) example creates a table my_dao
and demonstrates the use of rs.addNew
, rs.update
, and result set scrolling.
Private Sub myodbc_dao_Click() Dim ws As Workspace Dim conn As Connection Dim queryDef As queryDef Dim str As String 'connect to MySQL using MySQL ODBC 3.51 Driver Set ws = DBEngine.CreateWorkspace("", "venu", "venu", dbUseODBC) str = "odbc;DRIVER={MySQL ODBC 3.51 Driver};"_ & "SERVER=localhost;"_ & " DATABASE=test;"_ & "UID=venu;PWD=venu; OPTION=3" Set conn = ws.OpenConnection("test", dbDriverNoPrompt, False, str) 'Create table my_dao Set queryDef = conn.CreateQueryDef("", "drop table if exists my_dao") queryDef.Execute Set queryDef = conn.CreateQueryDef("", "create table my_dao(Id INT AUTO_INCREMENT PRIMARY KEY, " _ & "Ts TIMESTAMP(14) NOT NULL, Name varchar(20), Id2 INT)") queryDef.Execute 'Insert new records using rs.addNew Set rs = conn.OpenRecordset("my_dao") Dim i As Integer For i = 10 To 15 rs.AddNew rs!Name = "insert record" & i rs!Id2 = i rs.Update Next i rs.Close 'rs update.. Set rs = conn.OpenRecordset("my_dao") rs.Edit rs!Name = "updated-string" rs.Update rs.Close 'fetch the table back... Set rs = conn.OpenRecordset("my_dao", dbOpenDynamic) str = "Results:" rs.MoveFirst While Not rs.EOF str = " " & rs!Id & " , " & rs!Name & ", " & rs!Ts & ", " & rs!Id2 Debug.Print "DATA:" & str rs.MoveNext Wend 'rs Scrolling rs.MoveFirst str = " FIRST ROW: " & rs!Id & " , " & rs!Name & ", " & rs!Ts & ", " & rs!Id2 Debug.Print str rs.MoveLast str = " LAST ROW: " & rs!Id & " , " & rs!Name & ", " & rs!Ts & ", " & rs!Id2 Debug.Print str rs.MovePrevious str = " LAST-1 ROW: " & rs!Id & " , " & rs!Name & ", " & rs!Ts & ", " & rs!Id2 Debug.Print str 'free all resources rs.Close queryDef.Close conn.Close ws.Close End Sub
23.1.5.7.1.3. RDO: rs.addNew
and rs.update
The following RDO (Remote Data Objects) example creates a table my_rdo
and demonstrates the use of rs.addNew
and rs.update
.
Dim rs As rdoResultset Dim cn As New rdoConnection Dim cl As rdoColumn Dim SQL As String 'cn.Connect = "DSN=test;" cn.Connect = "DRIVER={MySQL ODBC 3.51 Driver};"_ & "SERVER=localhost;"_ & " DATABASE=test;"_ & "UID=venu;PWD=venu; OPTION=3" cn.CursorDriver = rdUseOdbc cn.EstablishConnection rdDriverPrompt 'drop table my_rdo SQL = "drop table if exists my_rdo" cn.Execute SQL, rdExecDirect 'create table my_rdo SQL = "create table my_rdo(id int, name varchar(20))" cn.Execute SQL, rdExecDirect 'insert - direct SQL = "insert into my_rdo values (100,'venu')" cn.Execute SQL, rdExecDirect SQL = "insert into my_rdo values (200,'MySQL')" cn.Execute SQL, rdExecDirect 'rs insert SQL = "select * from my_rdo" Set rs = cn.OpenResultset(SQL, rdOpenStatic, rdConcurRowVer, rdExecDirect) rs.AddNew rs!id = 300 rs!Name = "Insert1" rs.Update rs.Close 'rs insert SQL = "select * from my_rdo" Set rs = cn.OpenResultset(SQL, rdOpenStatic, rdConcurRowVer, rdExecDirect) rs.AddNew rs!id = 400 rs!Name = "Insert 2" rs.Update rs.Close 'rs update SQL = "select * from my_rdo" Set rs = cn.OpenResultset(SQL, rdOpenStatic, rdConcurRowVer, rdExecDirect) rs.Edit rs!id = 999 rs!Name = "updated" rs.Update rs.Close 'fetch back... SQL = "select * from my_rdo" Set rs = cn.OpenResultset(SQL, rdOpenStatic, rdConcurRowVer, rdExecDirect) Do Until rs.EOF For Each cl In rs.rdoColumns Debug.Print cl.Value, Next rs.MoveNext Debug.Print Loop Debug.Print "Row count="; rs.RowCount 'close rs.Close cn.Close End Sub
23.1.5.7.2. Using Connector/ODBC with .NET
This section contains simple examples that demonstrate the use of Connector/ODBC drivers with ODBC.NET.
23.1.5.7.2.1. Using Connector/ODBC with ODBC.NET and C# (C sharp)
The following sample creates a table my_odbc_net
and demonstrates its use in C#.
/**
* @sample : mycon.cs
* @purpose : Demo sample for ODBC.NET using Connector/ODBC
* @author : Venu, <myodbc@lists.mysql.com>
*
* (C) Copyright MySQL AB, 1995-2006
*
**/
/* build command
*
* csc /t:exe
* /out:mycon.exe mycon.cs
* /r:Microsoft.Data.Odbc.dll
*/
using Console = System.Console;
using Microsoft.Data.Odbc;
namespace myodbc3
{
class mycon
{
static void Main(string[] args)
{
try
{
//Connection string for Connector/ODBC 3.51
string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" +
"SERVER=localhost;" +
"DATABASE=test;" +
"UID=venu;" +
"PASSWORD=venu;" +
"OPTION=3";
//Connect to MySQL using Connector/ODBC
OdbcConnection MyConnection = new OdbcConnection(MyConString);
MyConnection.Open();
Console.WriteLine("\n !!! success, connected successfully !!!\n");
//Display connection information
Console.WriteLine("Connection Information:");
Console.WriteLine("\tConnection String:" +
MyConnection.ConnectionString);
Console.WriteLine("\tConnection Timeout:" +
MyConnection.ConnectionTimeout);
Console.WriteLine("\tDatabase:" +
MyConnection.Database);
Console.WriteLine("\tDataSource:" +
MyConnection.DataSource);
Console.WriteLine("\tDriver:" +
MyConnection.Driver);
Console.WriteLine("\tServerVersion:" +
MyConnection.ServerVersion);
//Create a sample table
OdbcCommand MyCommand =
new OdbcCommand("DROP TABLE IF EXISTS my_odbc_net",
MyConnection);
MyCommand.ExecuteNonQuery();
MyCommand.CommandText =
"CREATE TABLE my_odbc_net(id int, name varchar(20), idb bigint)";
MyCommand.ExecuteNonQuery();
//Insert
MyCommand.CommandText =
"INSERT INTO my_odbc_net VALUES(10,'venu', 300)";
Console.WriteLine("INSERT, Total rows affected:" +
MyCommand.ExecuteNonQuery());;
//Insert
MyCommand.CommandText =
"INSERT INTO my_odbc_net VALUES(20,'mysql',400)";
Console.WriteLine("INSERT, Total rows affected:" +
MyCommand.ExecuteNonQuery());
//Insert
MyCommand.CommandText =
"INSERT INTO my_odbc_net VALUES(20,'mysql',500)";
Console.WriteLine("INSERT, Total rows affected:" +
MyCommand.ExecuteNonQuery());
//Update
MyCommand.CommandText =
"UPDATE my_odbc_net SET id=999 WHERE id=20";
Console.WriteLine("Update, Total rows affected:" +
MyCommand.ExecuteNonQuery());
//COUNT(*)
MyCommand.CommandText =
"SELECT COUNT(*) as TRows FROM my_odbc_net";
Console.WriteLine("Total Rows:" +
MyCommand.ExecuteScalar());
//Fetch
MyCommand.CommandText = "SELECT * FROM my_odbc_net";
OdbcDataReader MyDataReader;
MyDataReader = MyCommand.ExecuteReader();
while (MyDataReader.Read())
{
if(string.Compare(MyConnection.Driver,"myodbc3.dll") == 0) {
//Supported only by Connector/ODBC 3.51
Console.WriteLine("Data:" + MyDataReader.GetInt32(0) + " " +
MyDataReader.GetString(1) + " " +
MyDataReader.GetInt64(2));
}
else {
//BIGINTs not supported by Connector/ODBC
Console.WriteLine("Data:" + MyDataReader.GetInt32(0) + " " +
MyDataReader.GetString(1) + " " +
MyDataReader.GetInt32(2));
}
}
//Close all resources
MyDataReader.Close();
MyConnection.Close();
}
catch (OdbcException MyOdbcException) //Catch any ODBC exception ..
{
for (int i=0; i < MyOdbcException.Errors.Count; i++)
{
Console.Write("ERROR #" + i + "\n" +
"Message: " +
MyOdbcException.Errors[i].Message + "\n" +
"Native: " +
MyOdbcException.Errors[i].NativeError.ToString() + "\n" +
"Source: " +
MyOdbcException.Errors[i].Source + "\n" +
"SQL: " +
MyOdbcException.Errors[i].SQLState + "\n");
}
}
}
}
}
23.1.5.7.2.2. Using Connector/ODBC with ODBC.NET and Visual Basic
The following sample creates a table my_vb_net
and demonstrates the use in VB.
' @sample : myvb.vb ' @purpose : Demo sample for ODBC.NET using Connector/ODBC ' @author : Venu,<myodbc@lists.mysql.com>
' ' (C) Copyright MySQL AB, 1995-2006 ' ' ' ' build command ' ' vbc /target:exe ' /out:myvb.exe ' /r:Microsoft.Data.Odbc.dll ' /r:System.dll ' /r:System.Data.dll ' Imports Microsoft.Data.Odbc Imports System Module myvb Sub Main() Try 'Connector/ODBC 3.51 connection string Dim MyConString As String = "DRIVER={MySQL ODBC 3.51 Driver};" & _ "SERVER=localhost;" & _ "DATABASE=test;" & _ "UID=venu;" & _ "PASSWORD=venu;" & _ "OPTION=3;" 'Connection Dim MyConnection As New OdbcConnection(MyConString) MyConnection.Open() Console.WriteLine("Connection State::" & MyConnection.State.ToString) 'Drop Console.WriteLine("Dropping table") Dim MyCommand As New OdbcCommand() MyCommand.Connection = MyConnection MyCommand.CommandText = "DROP TABLE IF EXISTS my_vb_net" MyCommand.ExecuteNonQuery() 'Create Console.WriteLine("Creating....") MyCommand.CommandText = "CREATE TABLE my_vb_net(id int, name varchar(30))" MyCommand.ExecuteNonQuery() 'Insert MyCommand.CommandText = "INSERT INTO my_vb_net VALUES(10,'venu')" Console.WriteLine("INSERT, Total rows affected:" & _ MyCommand.ExecuteNonQuery()) 'Insert MyCommand.CommandText = "INSERT INTO my_vb_net VALUES(20,'mysql')" Console.WriteLine("INSERT, Total rows affected:" & _ MyCommand.ExecuteNonQuery()) 'Insert MyCommand.CommandText = "INSERT INTO my_vb_net VALUES(20,'mysql')" Console.WriteLine("INSERT, Total rows affected:" & _ MyCommand.ExecuteNonQuery()) 'Insert MyCommand.CommandText = "INSERT INTO my_vb_net(id) VALUES(30)" Console.WriteLine("INSERT, Total rows affected:" & _ MyCommand.ExecuteNonQuery()) 'Update MyCommand.CommandText = "UPDATE my_vb_net SET id=999 WHERE id=20" Console.WriteLine("Update, Total rows affected:" & _ MyCommand.ExecuteNonQuery()) 'COUNT(*) MyCommand.CommandText = "SELECT COUNT(*) as TRows FROM my_vb_net" Console.WriteLine("Total Rows:" & MyCommand.ExecuteScalar()) 'Select Console.WriteLine("Select * FROM my_vb_net") MyCommand.CommandText = "SELECT * FROM my_vb_net" Dim MyDataReader As OdbcDataReader MyDataReader = MyCommand.ExecuteReader While MyDataReader.Read If MyDataReader("name") Is DBNull.Value Then Console.WriteLine("id = " & _ CStr(MyDataReader("id")) & " name = " & _ "NULL") Else Console.WriteLine("id = " & _ CStr(MyDataReader("id")) & " name = " & _ CStr(MyDataReader("name"))) End If End While 'Catch ODBC Exception Catch MyOdbcException As OdbcException Dim i As Integer Console.WriteLine(MyOdbcException.ToString) 'Catch program exception Catch MyException As Exception Console.WriteLine(MyException.ToString) End Try End Sub
출처 : MySQL 5.0 Reference Manual
Using Connector/ODBC with Crystal Reports
23.1.5.6. Using Connector/ODBC with Crystal Reports
Crystal Reports can use an ODBC DSN to connect to a database from which you to extract data and information for reporting purposes.
Note
There is a known issue with certain versions of Crystal Reports where the application is unable to open and browse tables and fields through an ODBC connection. Before using Crystal Reports with MySQL, please ensure that you have update to the latest version, including any outstanding service packs and hotfixes. For more information on this issue, see the Business) Objects Knowledgebase for more information.
For example, to create a simple crosstab report within Crystal Reports XI, you should follow these steps:
-
Create a DSN using the
Data Sources (ODBC)
tool. You can either specify a complete database, including username and password, or you can build a basic DSN and use Crystal Reports to set the username and password.For the purposes of this example, a DSN that provides a connection to an instance of the MySQL Sakila sample database has been created.
-
Open Crystal Reports and create a new project, or an open an existing reporting project into which you want to insert data from your MySQL data source.
-
Start the Cross-Tab Report Wizard, either by clicking on the option on the Start Page. Expand the Create New Connection folder, then expand the ODBC (RDO) folder to obtain a list of ODBC data sources.
You will be asked to select a data source.
-
When you first expand the ODBC (RDO) folder you will be presented the Data Source Selection screen. From here you can select either a pre-configured DSN, open a file-based DSN or enter and manual connection string. For this example, the Sakila DSN will be used.
If the DSN contains a username/password combination, or you want to use different authentication credentials, click
to enter the username and password that you want to use. Otherwise, click to continue the data source selection wizard. -
You will be returned the Cross-Tab Report Creation Wizard. You now need to select the database and tables that you want to include in your report. For our example, we will expand the selected Sakila database. Click the
city
table and use the button to add the table to the report. Then repeat the action with thecountry
table. Alternatively you can select multiple tables and add them to the report.Finally, you can select the parent Sakila resource and add of the tables to the report.
Once you have selected the tables you want to include, click
to continue. -
Crystal Reports will now read the table definitions and automatically identify the links between the tables. The identification of links between tables enables Crystal Reports to automatically lookup and summarize information based on all the tables in the database according to your query. If Crystal Reports is unable to perform the linking itself, you can manually create the links between fields in the tables you have selected.
Click
to continue the process. -
You can now select the columns and rows that you wish to include within the Cross-Tab report. Drag and drop or use the
buttons to add fields to each area of the report. In the example shown, we will report on cities, organized by country, incorporating a count of the number of cities within each country. If you want to browse the data, select a field and click the button.Click
to create a graph of the results. Since we are not creating a graph from this data, click to generate the report. -
The finished report will be shown, a sample of the output from the Sakila sample database is shown below.
Once the ODBC connection has been opened within Crystal Reports, you can browse and add any fields within the available tables into your reports.
출처 : MySQL 5.0 Reference Manual
Connector/ODBC Examples
23.1.5. Connector/ODBC Examples
Once you have configured a DSN to provide access to a database, how you access and use that connection is dependent on the application or programming language. As ODBC is a standardized interface, any application or language that supports ODBC can use the DSN and connect to the configured database.
23.1.5.1. Basic Connector/ODBC Application Steps
Interacting with a MySQL server from an applications using the Connector/ODBC typically involves the following operations:
-
Configure the Connector/ODBC DSN
-
Connect to MySQL server
-
Initialization operations
-
Execute SQL statements
-
Retrieve results
-
Perform Transactions
-
Disconnect from the server
Most applications use some variation of these steps. The basic application steps are shown in the following diagram:
23.1.5.2. Step-by-step Guide to Connecting to a MySQL Database through Connector/ODBC
A typical installation situation where you would install Connector/ODBC is when you want to access a database on a Linux or Unix host from a Windows machine.
As an example of the process required to set up access between two machines, the steps below take you through the basic steps. These instructions assume that you want to connect to system ALPHA from system BETA with a username and password of myuser
and mypassword
.
On system ALPHA (the MySQL server) follow these steps:
-
Start the MySQL server.
-
Use
GRANT
to set up an account with a username ofmyuser
that can connect from system BETA using a password ofmyuser
to the databasetest
:GRANT ALL ON test.* to 'myuser'@'BETA' IDENTIFIED BY 'mypassword';
For more information about MySQL privileges, refer to Section 5.5, “MySQL User Account Management”.
On system BETA (the Connector/ODBC client), follow these steps:
-
Configure a Connector/ODBC DSN using parameters that match the server, database and authentication information that you have just configured on system ALPHA.
Parameter Value Comment DSN remote_test A name to identify the connection. SERVER ALPHA The address of the remote server. DATABASE test The name of the default database. USER myuser The username configured for access to this database. PASSWORD mypassword The password for myuser
. -
Using an ODBC-capable application, such as Microsoft Office, connect to the MySQL server using the DSN you have just created. If the connection fails, use tracing to examine the connection process. See Section 23.1.4.8, “Getting an ODBC Trace File”, for more information.
23.1.5.3. Connector/ODBC and Third-Party ODBC Tools
Once you have configured your Connector/ODBC DSN, you can access your MySQL database through any application that supports the ODBC interface, including programming languages and third-party applications. This section contains guides and help on using Connector/ODBC with various ODBC-compatible tools and applications, including Microsoft Word, Microsoft Excel and Adobe/Macromedia ColdFusion.
Connector/ODBC has been tested with the following applications:
Publisher | Application | Notes |
Adobe | ColdFusion | Formerly Macromedia ColdFusion |
Borland | C++ Builder | |
Builder 4 | ||
Delphi | ||
Business Objects | Crystal Reports | |
Claris | Filemaker Pro | |
Corel | Paradox | |
Computer Associates | Visual Objects | Also known as CAVO |
AllFusion ERwin Data Modeler | ||
Gupta | Team Developer | Previously known as Centura Team Developer; Gupta SQL/Windows |
Gensym | G2-ODBC Bridge | |
Inline | iHTML | |
Lotus | Notes | Versions 4.5 and 4.6 |
Microsoft | Access | |
Excel | ||
Visio Enterprise | ||
Visual C++ | ||
Visual Basic | ||
ODBC.NET | Using C#, Visual Basic, C++ | |
FoxPro | ||
Visual Interdev | ||
OpenOffice.org | OpenOffice.org | |
Perl | DBD::ODBC | |
Pervasive Software | DataJunction | |
Sambar Technologies | Sambar Server | |
SPSS | SPSS | |
SoftVelocity | Clarion | |
SQLExpress | SQLExpress for Xbase++ | |
Sun | StarOffice | |
SunSystems | Vision | |
Sybase | PowerBuilder | |
PowerDesigner | ||
theKompany.com | Data Architect |
If you know of any other applications that work with Connector/ODBC, please send mail to <myodbc@lists.mysql.com>
about them.
출처 : MySQA 5.0 Reference Manual