我有以下查询
SELECT dictionaryEncryptedIndex, filelocation FROM `DictionaryTable`
WHERE `dictionaryEncryptedWord` LIKE '0x0E6E'";
在c#中循环上述查询的结果,对于每次循环迭代,我使用以下查询来获得最终结果:
SELECT * FROM `MaskedIndexTable`
WHERE `maskedIndexEncryptedIndex`
LIKE '" + dictionaryEncryptedIndexFROMABOVEQUERY + "'
AND `fileLocation` = '" + filelocationFROMABOVEQUERY + "'";
dictionaryEncryptedIndex和maskedIndexEncryptedIndex之间的关系不是一对一的关系。
有没有人知道如何在一个可以在Microsoft Access中使用的SQL查询中执行上述操作?
我尝试过多种方式:
SELECT * from DictionaryTable, MaskedIndexTable
WHERE MaskedIndexTable.maskedIndexEncryptedIndex = DictionaryTable.dictionaryEncryptedIndex
AND MaskedIndexTable.fileLocation =DictionaryTable.fileLocation
AND `dictionaryEncryptedWord` LIKE '0x0E6E'
SELECT dictionaryEncryptedWord, DictionaryTable.filelocation
FROM DictionaryTable
INNER JOIN MaskedIndexTable
ON (MaskedIndexTable.maskedIndexEncryptedIndex =DictionaryTable.dictionaryEncryptedIndex )
WHERE `dictionaryEncryptedWord` LIKE '...'
SELECT distinct *
FROM MaskedIndexTable
INNER JOIN DictionaryTable
ON (MaskedIndexTable.maskedIndexEncryptedIndex = DictionaryTable.dictionaryEncryptedIndex )
WHERE MaskedIndexTable.Id IN
(
SELECT DictionaryTable.Id
FROM DictionaryTable
WHERE `dictionaryEncryptedWord` LIKE '..')
AND `dictionaryEncryptedWord` LIKE '...'
但它们似乎都没有产生正确的结果(我用c#代码得到的结果)
答案 0 :(得分:0)
如果要在LIKE标准中使用通配符,则需要更改此项。
首先在Access中创建一个类似于第一个名为encryptedWordsQuery
SELECT DictionaryTable.dictionaryEncryptedIndex, DictionaryTable.fileLocation
FROM DictionaryTable
WHERE (((DictionaryTable.dictionaryEncryptedWord) Like "0x0E6E"));
其次在Access中创建一个查询,如下所示:
SELECT MaskedIndexTable.maskedIndex, MaskedIndexTable.maskedIndexEncryptedIndex, MaskedIndexTable.fileLocation
FROM MaskedIndexTable
WHERE Exists (SELECT *
FROM encryptedWordsQuery
WHERE MaskedIndexTable.maskedIndexEncryptedIndex = encryptedWordsQuery.dictionaryEncryptedIndex
AND MaskedIndexTable.fileLocation = encryptedWordsQuery.FileLocation);
我发现在Access中创建两个单独的查询更容易,而不只是一个。
答案 1 :(得分:0)
我认为这应该有用 - 如果你能够发布样本数据,我们可以制作一个SQLFiddle来演示它。
SELECT dt.dictionaryEncryptedIndex, dt.filelocation
FROM DictionaryTable dt
INNER JOIN MaskedIndexTable mit
ON mit.fileLocation = dt.fileLocation
AND mit.maskedIndexEncryptedIndex = dt.dictionaryEncryptedIndex
WHERE dt.dictionaryEncryptedWord LIKE '0x0E6E*'