internal override SqlSelect VisitSelect(SqlSelect select)
{
base.VisitSelect(select);
SqlUnion union = this.GetUnion(select.From);
if (union != null)
{
SqlSelect left = union.Left as SqlSelect;
SqlSelect right = union.Right as SqlSelect;
if (!((left != null) & (right != null)))
{
return(select);
}
int num = 0;
int count = left.Row.Columns.Count;
while (num < count)
{
left.Row.Columns[num].Ordinal = select.Row.Columns.Count + num;
num++;
}
int num3 = 0;
int num4 = right.Row.Columns.Count;
while (num3 < num4)
{
right.Row.Columns[num3].Ordinal = select.Row.Columns.Count + num3;
num3++;
}
int num5 = 0;
int num6 = select.Row.Columns.Count;
while (num5 < num6)
{
SqlExprSet expression = select.Row.Columns[num5].Expression as SqlExprSet;
if (expression != null)
{
int num7 = 0;
int num8 = expression.Expressions.Count;
while (num7 < num8)
{
SqlColumnRef ref2 = expression.Expressions[num7] as SqlColumnRef;
if ((ref2 != null) && (num7 >= select.Row.Columns.Count))
{
ref2.Column.Ordinal = num5;
}
num7++;
}
}
num5++;
}
Comparison <SqlColumn> comparison = delegate(SqlColumn x, SqlColumn y)
{
return(x.Ordinal - y.Ordinal);
};
left.Row.Columns.Sort(comparison);
right.Row.Columns.Sort(comparison);
}
return(select);
}
internal virtual SqlExpression VisitExprSet(SqlExprSet xs)
{
int num = 0;
int count = xs.Expressions.Count;
while (num < count)
{
xs.Expressions[num] = this.VisitExpression(xs.Expressions[num]);
num++;
}
return(xs);
}
internal override SqlExpression VisitExprSet(SqlExprSet xs)
{
SqlExpression[] exprs = new SqlExpression[xs.Expressions.Count];
int index = 0;
int length = exprs.Length;
while (index < length)
{
exprs[index] = this.VisitExpression(xs.Expressions[index]);
index++;
}
return(new SqlExprSet(xs.ClrType, exprs, xs.SourceExpression));
}