Ecco del codice che ho scritto per generare procedure memorizzate "inserisci" per ogni tabella in un database. Gestisce anche la restituzione del nuovo ID per quelle tabelle che hanno una colonna Identity. Utilizza SQL SMO. Alcuni sono un po' specifici per il mio progetto, quindi per favore fatemi sapere se avete domande.
void InsertScripts(Database db)
{
var tables = db.Tables.ToIEnumerable(); //this is an extension method to convert Database.Tables into an IEnumerable<Table>
{
foreach (var t in tables)
{
var sb = new StringBuilder();
var sp = new StoredProcedure(db, "gen_insert_" + t.Name);
sp.AnsiNullsStatus = false;
sp.QuotedIdentifierStatus = false;
sp.TextMode = false;
var columns = t.Columns.ToIEnumerable().Where(c => !c.Identity && !c.IsReadOnly()).ToList();
foreach (var c in columns)
{
var p = new StoredProcedureParameter(sp, "@" + t.Name + "_" + c.Name, c.DataType);
p.IsCursorParameter = false;
if(c.Default != null && c.Default.Length > 0)
p.DefaultValue = c.Default;
if (c.Nullable)
p.DefaultValue = "NULL";
sp.Parameters.Add(p);
}
var cols = string.Join(",", columns.Select(c => c.Name).ToArray());
var vals = string.Join(",", columns.Select(c => "@" + t.Name + "_" + c.Name).ToArray());
var sql = string.Format("insert into {0} ({1}) values ({2});", t.Name, cols, vals);
sb.AppendLine(sql);
if (t.Columns.ToIEnumerable().Any(c => c.Identity))
{
var declaration = "declare @newid int;\r\n";
var ret = "select @newid = scope_identity();\r\nselect @newid;\r\nreturn @newid";
sb.Insert(0, declaration);
sb.AppendLine(ret);
}
sp.TextBody = sb.ToString();
if(cols.Length > 0 && sp.Parent.StoredProcedures[sp.Name] == null)
sp.Create();
}
}
}
public static class Utils //Extension methods...
{
public static IEnumerable<Table> ToIEnumerable(this TableCollection tables)
{
var list = new List<Table>();
foreach (Table t in tables)
list.Add(t);
return list;
}
public static IEnumerable<View> ToIEnumerable(this ViewCollection views)
{
var list = new List<View>();
foreach (View v in views)
list.Add(v);
return list;
}
public static IEnumerable<Column> ToIEnumerable(this ColumnCollection columns)
{
var list = new List<Column>();
foreach (Column c in columns)
list.Add(c);
return list;
}
public static IEnumerable<ForeignKey> ToIEnumerable(this ForeignKeyCollection columns)
{
var list = new List<ForeignKey>();
foreach (ForeignKey c in columns)
list.Add(c);
return list;
}
public static IEnumerable<string> ToIEnumerable(this ForeignKeyColumnCollection columns)
{
var list = new List<string>();
foreach (ForeignKeyColumn c in columns)
list.Add(c.Name);
return list;
}
}