internal IAliasedExpression Update(Union item, TableAlias alias, IAliasedExpression[] aliasedExpression)
{
if (item.SelectStatements != aliasedExpression || item.Alias != alias)
return new Union(alias, aliasedExpression);
return item;
}
public override IAliasedExpression Visit(Union item)
{
bool isFirst = true;
if (item.Alias != null)
writer.Write('(');
foreach (var select in item.SelectStatements)
{
if (isFirst)
isFirst = false;
else
writer.WriteLine("UNION ALL ");
Visit(select);
}
if (item.Alias != null)
{
writer.Write(')');
Visit(item.Alias);
}
return item;
}