private string AddFilterColumnCommandText(DmColumn col) { var quotedColumnName = new ObjectNameParser(col.ColumnName, "[", "]").QuotedString; var quotedColumnType = new ObjectNameParser(col.GetSqlDbTypeString(), "[", "]").QuotedString; quotedColumnType += col.GetSqlTypePrecisionString(); return(string.Concat("ALTER TABLE ", quotedColumnName, " ADD ", quotedColumnType)); }