Allow use DISTINCT in aggregate functions

[peter-gribanov]

Allow use DISTINCT in AVG, MAX, MIN, SUM aggregate functions.

Doctrine Aggregate Expressions

AggregateExpression ::= ("AVG" | "MAX" | "MIN" | "SUM" | "COUNT") "(" ["DISTINCT"] SimpleArithmeticExpression ")"

Upgrade

• The AVG function as argument to Spec::fun() is not longer supported, use Spec::AVG() instead.

• The AVG function as argument to Happyr\DoctrineSpecification\Operand\PlatformFunction is not longer supported, use Happyr\DoctrineSpecification\Operand\PlatformFunction\Avg instead.

  Before:

  new PlatformFunction('AVG', 'field_name');
  Spec::fun('AVG', 'field_name');

  After:

  new Avg('field_name');
  Spec::AVG('field_name');

• The MIN function as argument to Spec::fun() is not longer supported, use Spec::MIN() instead.

• The MIN function as argument to Happyr\DoctrineSpecification\Operand\PlatformFunction is not longer supported, use Happyr\DoctrineSpecification\Operand\PlatformFunction\Min instead.

  Before:

  new PlatformFunction('MIN', 'field_name');
  Spec::fun('MIN', 'field_name');

  After:

  new Min('field_name');
  Spec::MIN('field_name');

• The MAX function as argument to Spec::fun() is not longer supported, use Spec::MAX() instead.

• The MAX function as argument to Happyr\DoctrineSpecification\Operand\PlatformFunction is not longer supported, use Happyr\DoctrineSpecification\Operand\PlatformFunction\Max instead.

  Before:

  new PlatformFunction('MAX', 'field_name');
  Spec::fun('MAX', 'field_name');

  After:

  new Max('field_name');
  Spec::MAX('field_name');

• The SUM function as argument to Spec::fun() is not longer supported, use Spec::SUM() instead.

• The SUM function as argument to Happyr\DoctrineSpecification\Operand\PlatformFunction is not longer supported, use Happyr\DoctrineSpecification\Operand\PlatformFunction\Sum instead.

  Before:

  new PlatformFunction('SUM', 'field_name');
  Spec::fun('SUM', 'field_name');

  After:

  new Sum('field_name');
  Spec::SUM('field_name');