NRails.Database.Mssql.SqlServer.Schema.SqlUniqueKeys.GetCommandText C# (CSharp) Method

        protected override SqlClause GetCommandText(object[] restrictions)
        {
            var sql = new SqlClause();

            var col = _sqlClauses.Select("CollectionName = 'UniqueKeys' and Version=" + _version.ver1);

            sql.Select = col[0]["SelectMain"].ToString();

            sql.AppendWhere(col[0]["Where1"].ToString());

            if (restrictions != null)
            {
                var index = 0;

                // TABLE_CATALOG
                if (restrictions.Length >= 1 && restrictions[0] != null)
                {}

                // TABLE_SCHEMA
                if (restrictions.Length >= 2 && restrictions[1] != null)
                    sql.AppendWhereFormat(CultureInfo.CurrentCulture, col[0]["Where2"].ToString(), index++);

                // TABLE_NAME
                if (restrictions.Length >= 3 && restrictions[2] != null)
                    sql.AppendWhereFormat(CultureInfo.CurrentCulture, col[0]["Where3"].ToString(), index);
            }

            sql.AppendOrder(col[0]["Order1"].ToString());

            return sql;
        }