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我有以下担忧：我已经处理 sqlkata 几个小时了，但是我没有解决以下问题：我想创建一个带有链接 where 子句的 select 语句。但是，我找不到设置大括号的方法。我当前的 SQL 语句如下所示：

SELECT [id], [filename], [extension], [ocr_full_ready], [pdf_type] FROM [document] 
WHERE [extension] IN ('.eml', '.msg', '.docx', '.xlsx', '.doc', '.xls', '.txt', '.lnk') 
AND [ocr_full_ready] IS NULL OR [ocr_full_ready] BETWEEN 3 AND 9 
AND NOT (LOWER([filename]) like 'gobd%') 
ORDER BY [id] DESC

我需要的是：

SELECT [id], [filename], [extension], [ocr_full_ready], [pdf_type] FROM [document] 
WHERE [extension] IN ('.eml', '.msg', '.docx', '.xlsx', '.doc', '.xls', '.txt', '.lnk') 
AND ([ocr_full_ready] IS NULL OR [ocr_full_ready] BETWEEN 3 AND 9)
AND NOT (LOWER([filename]) like 'gobd%') 
ORDER BY [id] DESC

请注意第三行中添加的大括号。

我当前的 sqlkata 语句如下所示：

Dim query = qf.Query("document").Select("id", "filename", "extension", "ocr_full_ready", "pdf_type") _
                        .WhereIn("extension", New String() {".eml", ".msg", ".docx", ".xlsx", ".doc", ".xls", ".txt", ".lnk"}) _
                        .WhereNull("ocr_full_ready").OrWhereBetween("ocr_full_ready", 3, 9) _
                        .WhereNotLike("filename", "Gobd%") _
                        .OrderByDesc("id") _
                        .Limit(1)

我确信这不是一个难题。我想我一直都想念解决方案。感谢所有帮助的人。

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1 回答 1

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根据SqlKata的嵌套条件文档：

要将条件分组，只需将它们包装在另一个Where块中。

因此，在您的示例中，它将是：

Dim query = qf.Query("document").Select("id", "filename", "extension", "ocr_full_ready", "pdf_type") _
    .WhereIn("extension", New String() {".eml", ".msg", ".docx", ".xlsx", ".doc", ".xls", ".txt", ".lnk"}) _
    .Where(Function(w) w.WhereNull("ocr_full_ready").OrWhereBetween("ocr_full_ready", 3, 9)) _
    .WhereNotLike("filename", "Gobd%") _
    .OrderByDesc("id") _
    .Limit(1)
于 2021-04-30T17:35:25.763 回答