Here’s a quick code to generate a “Create Table” query based on your Datatable object. The code is written on C# and it generates a create query for SQL table.
I had found this code somewhere on the StackOverflow site and it has proven to be extremely helpful.
public static string GenerateCreateTableQueryFromDataTable(string tableName, DataTable table)
{
var sqlsc = "CREATE TABLE " + tableName + "(";
for (int i = 0; i < table.Columns.Count; i++)
{
sqlsc += "\n [" + table.Columns[i].ColumnName + "] ";
string columnType = table.Columns[i].DataType.ToString();
switch (columnType)
{
case "System.Int32":
sqlsc += " int ";
break;
case "System.Int64":
sqlsc += " bigint ";
break;
case "System.Int16":
sqlsc += " smallint";
break;
case "System.Byte":
sqlsc += " tinyint";
break;
case "System.Decimal":
sqlsc += " decimal ";
break;
case "System.DateTime":
sqlsc += " datetime ";
break;
case "System.String":
default:
sqlsc += string.Format(" nvarchar({0}) ", table.Columns[i].MaxLength == -1 ? "max" : table.Columns[i].MaxLength.ToString());
break;
}
if (table.Columns[i].AutoIncrement)
sqlsc += " IDENTITY(" + table.Columns[i].AutoIncrementSeed.ToString() + "," + table.Columns[i].AutoIncrementStep.ToString() + ") ";
if (!table.Columns[i].AllowDBNull)
sqlsc += " NOT NULL ";
sqlsc += ",";
}
return sqlsc.Substring(0, sqlsc.Length - 1) + "\n)";
}