Parsing of special bindings

[g105b]

"Special bindings" (order by, limit, group by, offset) can not be injected by PDO natively, so they must be injected into the SQL string. Currently the implementation does basic escaping of characters, but it would be very neat to parse the different special bindings and escape each one properly according to the spec.

There is already placeholder code for this here:

Database/src/Query/SqlQuery.php

Lines 159 to 175 in 1c21db6

	switch($type) {
	// [GROUP BY {col_name | expr | position}, ... [WITH ROLLUP]]
	case "groupBy":
	break;
	// [ORDER BY {col_name | expr | position}
	case "orderBy":
	break;
	// [LIMIT {[offset,] row_count | row_count OFFSET offset}]
	case "limit":
	break;
	// [LIMIT {[offset,] row_count | row_count OFFSET offset}]
	case "offset":
	break;
	}