为什么我无法从我的查询中选择？

Question

我有一个查询这样的事情（不，我的表和字段不会被这些名字叫，但结构是一样的） -

SELECT table1.id, table2.id, table1.phone1 
FROM table1 LEFT OUTER JOIN 
    table3 ON table3.id = table1.id LEFT OUTER JOIN 
    table2 ON table3.id2 = table2.id  
    WHERE table1.phone1 IS NOT NULL AND LTRIM(RTRIM(table1.phone1)) <> '' 

UNION 

SELECT table1.id, table2.id, table1.phone2 
FROM table1 LEFT OUTER JOIN 
    table3 ON table3.id = table1.id LEFT OUTER JOIN 
    table2 ON table3.id2 = table2.id  
WHERE table1.phone2 IS NOT NULL AND LTRIM(RTRIM(table1.phone2)) <> '' 

UNION 

SELECT table1.id, table2.id, table2.phone 
FROM table1 LEFT OUTER JOIN 
    table3 ON table3.id = table1.id LEFT OUTER JOIN 
    table2 ON table3.id2 = table2.id  
WHERE table2.phone IS NOT NULL AND LTRIM(RTRIM(table2.phone)) <> '' 

运行良好。但是，当我尝试从中选择（我最终会尝试用分组依据等操作，但现在只是尝试一个简单的选择），就像这样：

SELECT * FROM 
    (SELECT table1.id, table2.id, table1.phone1 
    FROM table1 LEFT OUTER JOIN 
     table3 ON table3.id = table1.id LEFT OUTER JOIN 
     table2 ON table3.id2 = table2.id  
     WHERE table1.phone1 IS NOT NULL AND LTRIM(RTRIM(table1.phone1)) <> '' 

    UNION 

    SELECT table1.id, table2.id, table1.phone2 
    FROM table1 LEFT OUTER JOIN 
     table3 ON table3.id = table1.id LEFT OUTER JOIN 
     table2 ON table3.id2 = table2.id  
    WHERE table1.phone2 IS NOT NULL AND LTRIM(RTRIM(table1.phone2)) <> '' 

    UNION 

    SELECT table1.id, table2.id, table2.phone 
    FROM table1 LEFT OUTER JOIN 
     table3 ON table3.id = table1.id LEFT OUTER JOIN 
     table2 ON table3.id2 = table2.id  
    WHERE table2.phone IS NOT NULL AND LTRIM(RTRIM(table2.phone)) <> '') 

我得到的错误：

Incorrect syntax near ')'. 

我在做什么错？

Answer 1

您错过了命名子查询。关闭像...) sub_query_name。