[英]ms-access: missing operator in query expression
我在訪問中有此sql語句:
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,直到我添加了最后一行:
SELECT [Occurrence Number], NULL, NULL,NULL [4 0 Other] FROM [Lab Occurrence Form] WHERE NOT ([4 0 Other] IS NULL)
我收到此錯誤:
syntax error (missing operator) in query expression 'NULL [4 0 Other]'
任何人都有任何線索,為什么我會收到此錯誤?
您錯過了一個逗號:
NULL, [4 0 Other]
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