Article
03/31/2012

Création, modification et suppression de tables

Dans SMO (SQL Server Management Objects), les tables sont représentées par l'objet Table. Dans la hiérarchie des objets SMO, l'objet Table se trouve sous l'objet Database.

Exemple

Pour utiliser un exemple de code fourni, vous devrez sélectionner l'environnement, le modèle et le langage de programmation dans lequel créer votre application. Pour plus d'informations, consultez Procédure : créer un projet SMO Visual Basic dans Visual Studio .NET ou Procédure : créer un projet SMO Visual C# dans Visual Studio .NET.

Création, modification et suppression d'une table en Visual Basic

Cet exemple de code crée une table dotée de plusieurs colonnes avec des types et objectifs différents. Le code fournit également des exemples pour créer un champ d'identité, créer une clé primaire et modifier des propriétés de la table.

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2008R2 database.
Dim db As Database
db = srv.Databases("AdventureWorks2008R2")
'Define a Table object variable by supplying the parent database and table name in the constructor. 
Dim tb As Table
tb = New Table(db, "Test_Table")
'Add various columns to the table.
Dim col1 As Column
col1 = New Column(tb, "Name", DataType.NChar(50))
col1.Collation = "Latin1_General_CI_AS"
col1.Nullable = True
tb.Columns.Add(col1)
Dim col2 As Column
col2 = New Column(tb, "ID", DataType.Int)
col2.Identity = True
col2.IdentitySeed = 1
col2.IdentityIncrement = 1
tb.Columns.Add(col2)
Dim col3 As Column
col3 = New Column(tb, "Value", DataType.Real)
tb.Columns.Add(col3)
Dim col4 As Column
col4 = New Column(tb, "Date", DataType.DateTime)
col4.Nullable = False
tb.Columns.Add(col4)
'Create the table on the instance of SQL Server.
tb.Create()
'Add another column.
Dim col5 As Column
col5 = New Column(tb, "ExpiryDate", DataType.DateTime)
col5.Nullable = False
tb.Columns.Add(col5)
'Run the Alter method to make the change on the instance of SQL Server.
tb.Alter()
'Remove the table from the database.

tb.Drop()

Création, modification et suppression d'une table en Visual C#

{
            //Connect to the local, default instance of SQL Server. 
        Server srv; 
        srv = new Server(); 
        //Reference the AdventureWorks2008R2 database. 
        Database db; 
        db = srv.Databases["AdventureWorks2008R2"]; 
        //Define a Table object variable by supplying the parent database and table name in the constructor. 
        Table tb; 
        tb = new Table(db, "Test_Table"); 
        //Add various columns to the table. 
        Column col1; 
        col1 = new Column(tb, "Name", DataType.NChar(50)); 
        col1.Collation = "Latin1_General_CI_AS"; 
        col1.Nullable = true; 
        tb.Columns.Add(col1); 
        Column col2; 
        col2 = new Column(tb, "ID", DataType.Int); 
        col2.Identity = true; 
        col2.IdentitySeed = 1; 
        col2.IdentityIncrement = 1; 
        tb.Columns.Add(col2); 
        Column col3; 
        col3 = new Column(tb, "Value", DataType.Real); 
        tb.Columns.Add(col3); 
        Column col4; 
        col4 = new Column(tb, "Date", DataType.DateTime); 
        col4.Nullable = false; 
        tb.Columns.Add(col4); 
        //Create the table on the instance of SQL Server. 
        tb.Create(); 
        //Add another column. 
        Column col5; 
        col5 = new Column(tb, "ExpiryDate", DataType.DateTime); 
        col5.Nullable = false; 
        tb.Columns.Add(col5); 
        //Run the Alter method to make the change on the instance of SQL Server. 
        tb.Alter(); 
        //Remove the table from the database. 
        tb.Drop(); 
        }

Création, modification et suppression d'une table dans PowerShell

#Load the assembly containing the objects used in this example
[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.Types")

# Set the path context to the local, default instance of SQL Server.
CD \sql\localhost\default\Databases\

#And the database object corresponding to AdventureWorks2008R2.
$db = get-item AdventureWorks2008R2

#Create a SMO Table
$tb = New-Object -TypeName Microsoft.SqlServer.Management.SMO.Table -argumentlist $db, "Test_Table"

#Add various columns to the table. 
$Type = [Microsoft.SqlServer.Management.SMO.DataType]::NChar(50)
$col1 =  New-Object -TypeName Microsoft.SqlServer.Management.SMO.Column -argumentlist $tb,"Name", $Type
$col1.Collation = "Latin1_General_CI_AS"
$col1.Nullable = $true
$tb.Columns.Add($col1)

$Type = [Microsoft.SqlServer.Management.SMO.DataType]::Int
$col2 =  New-Object -TypeName Microsoft.SqlServer.Management.SMO.Column -argumentlist $tb,"ID", $Type
$col2.Identity = $true
$col2.IdentitySeed = 1
$col2.IdentityIncrement = 1
$tb.Columns.Add($col2) 

$Type = [Microsoft.SqlServer.Management.SMO.DataType]::Real
$col3 =  New-Object -TypeName Microsoft.SqlServer.Management.SMO.Column -argumentlist $tb,"Value", $Type
$tb.Columns.Add($col3) 

$Type = [Microsoft.SqlServer.Management.SMO.DataType]::DateTime
$col4 =  New-Object -TypeName Microsoft.SqlServer.Management.SMO.Column -argumentlist $tb,"Date", $Type
$col4.Nullable = $false
$tb.Columns.Add($col4) 

#Create the table
$tb.Create()

$Type = [Microsoft.SqlServer.Management.SMO.DataType]::DateTime
$col5 =  New-Object -TypeName Microsoft.SqlServer.Management.SMO.Column -argumentlist $tb,"ExpiryDate", $Type
$col5.Nullable = $false
$tb.Columns.Add($col5) 

#Run the Alter method to make the change on the instance of SQL Server. 
$tb.Alter()

#Remove the table from the database. 
$tb.Drop()

Voir aussi

Référence

Table

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