MS-访问：丢失的运算符在查询表达式

Question

我有这样的SQL语句访问：

SELECT * 
FROM (SELECT [Occurrence Number], [1 0 Preanalytical (Before Testing)], NULL, NULL,NULL FROM [Lab Occurrence Form] 
WHERE NOT ([1 0 Preanalytical (Before Testing)] IS NULL) 
    UNION 
    SELECT [Occurrence Number], NULL, [2 0 Analytical (Testing Phase)], NULL,NULL FROM [Lab Occurrence Form] WHERE NOT ([2 0 Analytical (Testing Phase)] IS NULL) 
    UNION 
    SELECT [Occurrence Number], NULL, NULL, [3 0 Postanalytical (After Testing)],NULL FROM [Lab Occurrence Form] WHERE NOT ([3 0 Postanalytical (After Testing)] IS NULL) 
UNION 
    SELECT [Occurrence Number], NULL, NULL,NULL [4 0 Other] FROM [Lab Occurrence Form] WHERE NOT ([4 0 Other] IS NULL) 
) AS mySubQuery 
ORDER BY mySubQuery.[Occurrence Number]; 

一切都很好，直到我说的最后一行：

SELECT [Occurrence Number], NULL, NULL,NULL [4 0 Other] FROM [Lab Occurrence Form] WHERE NOT ([4 0 Other] IS NULL) 

我得到这个错误：

syntax error (missing operator) in query expression 'NULL [4 0 Other]' 

任何人都有任何线索为什么我得到这个错误？

Answer 1

你错过了一个逗号：

NULL, [4 0 Other]