Question

我正在尝试搜索mySQL数据库并返回具有最高版本的结果，但是当搜索中有空格时，它始终不返回任何结果。

我尝试在查询的select MAX中使用replace，但这只是导致语法错误。

SELECT document_versions.payload, document_versions.version 
FROM document_versions 
INNER JOIN documents ON documents.guid = document_versions.document_guid WHERE document_versions.title = @name 
AND documents.document_type_id = 35 
AND document_versions.version = 
(SELECT MAX(version) FROM document_versions WHERE title = @name)

我也尝试过

SELECT document_versions.payload, document_versions.version 
FROM document_versions INNER JOIN documents ON documents.guid = document_versions.document_guid 
    WHERE REPLACE(document_versions.title,' ','') = 
    REPLACE(@name,' ','')
    AND documents.document_type_id = 35 
    AND document_versions.version = 
    SELECT MAX(version) FROM document_versions 
    WHERE REPLACE(title,' ','') = REPLACE(@name,' ',''))

哪个也不返回结果。

Answer 1

您尝试过这样吗？

SELECT document_versions.payload, document_versions.version 
FROM document_versions 
INNER JOIN documents ON documents.guid = document_versions.document_guid 
WHERE document_versions.title = @name 
AND documents.document_type_id = 35 
ORDER BY document_versions.version DESC LIMIT 1

字符串搜索查询中的空格导致搜索返回但没有结果

1 个答案: