internal override DbExpression AsCqt(bool isTopLevel)
{
Debug.Assert(m_caseSlotInfo.OutputMember != null, "We only construct real slots not boolean slots");
// The FROM part: FROM (childBlock)
Debug.Assert(Children.Count == 1, "CaseCqlBlock can have exactly one child.");
var childBlock = Children[0];
var cqt = childBlock.AsCqt(false);
// Get the WHERE part only when the expression is not simply TRUE.
if (!BoolExpression.EqualityComparer.Equals(WhereClause, BoolExpression.True))
{
cqt = cqt.Where(row => WhereClause.AsCqt(row));
}
// The SELECT part.
return(cqt.Select(row => GenerateProjectionCqt(row, isTopLevel)));
}
internal override DbExpression AsCqt(bool isTopLevel)
{
// Get the FROM part.
DbExpression cqt = m_extent.Scan();
// Get the WHERE part only when the expression is not simply TRUE.
if (!BoolExpression.EqualityComparer.Equals(WhereClause, BoolExpression.True))
{
cqt = cqt.Where(row => WhereClause.AsCqt(row));
}
// The SELECT/DISTINCT part.
cqt = cqt.Select(row => GenerateProjectionCqt(row, isTopLevel));
if (m_selectDistinct == CellQuery.SelectDistinct.Yes)
{
cqt = cqt.Distinct();
}
return(cqt);
}