Microsoft SQL Server Management Studio Rewrites my query incorrectly

问题

I am trying to create a simple view in Microsoft SQL Server Management Studio 2008 R2. I tried using the Views > New View designer as well as typing the CREATE VIEW command directly in to the query builder, but no matter how I create it, the studio malforms my query.

Here is the source query. Pay special attention to the WHERE clause:

 SELECT RTRIM(Orders.ITEMNUMBER) AS ItemNumber, 
        Orders.Type, 
        Orders.Quantity, 
        Orders.OrderNumber, 
        OrderDetails.SaleDate, 
        OrderLineItems.ReturnType,
        OrderLineItems.Action,
        OrderLineItems.Restock,
        OrderLineItems.Return
 FROM Orders 
 INNER JOIN OrderDetails ON Orders.Type = OrderDetails.Type 
 AND Orders.OrderNumber = OrderDetails.OrderNumber 
 INNER JOIN OrderLineItems ON Orders.OrderNumber = OrderLineItems.OrderNumber
 WHERE (OrderLineItems.Type = 'INVOICE' AND Orders.Type='3') OR 
       (OrderLineItems.Type = 'RETURN' AND Orders.Type='4')

However, no matter what, SQL Server Management Studio malforms the query to this:

 SELECT RTRIM(Orders.ITEMNUMBER) AS ItemNumber, 
        Orders.Type, 
        Orders.Quantity, 
        Orders.OrderNumber, 
        OrderDetails.SaleDate, 
        OrderLineItems.ReturnType,
        OrderLineItems.Action,
        OrderLineItems.Restock,
        OrderLineItems.Return
 FROM Orders 
 INNER JOIN OrderDetails ON Orders.Type = OrderDetails.Type 
 AND Orders.OrderNumber = OrderDetails.OrderNumber 
 INNER JOIN OrderLineItems ON Orders.OrderNumber = OrderLineItems.OrderNumber
 WHERE (OrderLineItems.Type = 'INVOICE') AND (Orders.Type='3') OR 
       (OrderLineItems.Type = 'RETURN') AND (Orders.Type='4')

See, the difference is that I want to pull rows where OrderLineItems.Type is INVOICE and Orders.Type is 3, OR OrderLineItems.Type is RETURN and Orders.Type is 4. The query it rewrites for me messes up the parentheses - it won't allow me to put two AND clauses on either side of an OR clause.

Is there any way to bypass Microsoft's query rewriter? Or would the above rewritten query still be interpreted correctly even though the parentheses are not properly separating the two AND clauses?

As I mentioned, I already tried creating this using a straight up CREATE query in the New Query view, but it still ends up malformed.

Thanks for your help.

EDIT / Conclusion

So it turns out that both queries above are logically equivalent. MS SQL's order of operations causes it to evaluate each AND statement first, then finally check the OR statement last. The parentheses, though nice for clarity, were unnecessary.

回答1:

Might sound silly, but have you tried just going along with it, and putting the parens around the whole thing after corrected? Since it insists on isolating each condition...

WHERE ((OrderLineItems.Type = 'INVOICE') AND (Orders.Type='3')) OR ((OrderLineItems.Type = 'RETURN') AND (Orders.Type='4'))

回答2:

By knuckling under SQL Server you are loosing readability.

You may try impove it using CTE:

with where_condition as 
(select 'INVOICE' OrderLineType, '3' OrderType union all 
 select 'RETURN', '4')

select * from <list of your tables>, where_condition
where OrderLineItems.Type = where_condition.OrderLineType and 
Orders.Type= where_condition.OrderType

Unfortunatelly, SQL Server do not yet support (tuple) in (select ..) syntax.

来源：https://stackoverflow.com/questions/22568604/microsoft-sql-server-management-studio-rewrites-my-query-incorrectly

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sql-server-2008

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