internal override SqlSource VisitJoin(SqlJoin join)
{
if (join.JoinType == SqlJoinType.CrossApply)
{
// Look down the left side to see what table aliases are produced.
HashSet <SqlAlias> p = SqlGatherProducedAliases.Gather(join.Left);
// Look down the right side to see what table aliases are consumed.
HashSet <SqlAlias> c = SqlGatherConsumedAliases.Gather(join.Right);
// Look at each consumed alias and see if they are mentioned in produced.
if (p.Overlaps(c))
{
Annotations.Add(join, new SqlServerCompatibilityAnnotation(Strings.SourceExpressionAnnotation(join.SourceExpression), SqlProvider.ProviderMode.Sql2000));
// Can't reduce because this consumed alias is produced on the left.
return(base.VisitJoin(join));
}
// Can turn this into a CROSS JOIN
join.JoinType = SqlJoinType.Cross;
return(VisitJoin(join));
}
return(base.VisitJoin(join));
}
private void AnnotateSqlIncompatibility(SqlNode node, params SqlProvider.ProviderMode[] providers)
{
this.annotations.Add(node, new SqlServerCompatibilityAnnotation(Strings.SourceExpressionAnnotation(node.SourceExpression), providers));
}
internal override SqlSelect VisitSelect(SqlSelect select)
{
base.VisitSelect(select);
if (select.Top != null)
{
if (select.Top.NodeType == SqlNodeType.Value)
{
SqlValue val = (SqlValue)select.Top;
// convert to literal value for SQL2K compatibility
if (val.IsClientSpecified)
{
select.Top = sql.Value(val.ClrType, val.SqlType, val.Value, false, val.SourceExpression);
}
}
else
{
// cannot be converted to literal value. note that this select is not SQL2K compatible
this.annotations.Add(select.Top, new SqlServerCompatibilityAnnotation(Strings.SourceExpressionAnnotation(select.Top.SourceExpression), SqlProvider.ProviderMode.Sql2000));
}
}
return(select);
}
