Question

我在下面有这个查询：

SELECT ied.[Reference]
    ,Count(*) AS 'Hits'
FROM dbo.ItemExportDefinition ied WITH (NOLOCK)
LEFT JOIN dbo.[Hits] WH WITH (NOLOCK) ON ied.[Reference] COLLATE DATABASE_DEFAULT = CASE 
        WHEN CHARINDEX('&', WH.QUERY, 0) = 0
            THEN SUBSTRING(WH.QUERY, 4, 30)
        WHEN CHARINDEX('&', WH.QUERY, 0) > 0
            THEN SUBSTRING(SUBSTRING(WH.QUERY, 0, CHARINDEX('&', WH.QUERY)), 4, 100)
        ELSE WH.QUERY
        END
GROUP BY ied.[Guide Web Reference]
ORDER BY Hits DESC

它返回以下值：

ESC7730AE5  273697
ES4904A3EA  152392
ES0C69E6B9  11829
ES2413515E  5653
ESBA042518  1144
ES193DFEC8  1067
ESBF086D49  77
ES0AA87194  25
ESIXVY6881  9
ESE77AEF31  4
ES4087624D  3
ESF8BD9328  2

我想要的是我想得到计数为0的结果。例如，它看起来像这样：

ESC7730AE5  273697
ES4904A3EA  152392
ES0C69E6B9  11829
ES2413515E  5653
ESBA042518  1144
ES193DFEC8  1067
ESBF086D49  77
ES0AA87194  25
ESIXVY6881  9
ESE77AEF31  4
ES4087624D  3
ESF8BD9328  2
ESF8BD9328A 0
ESF8BD932832    0
ESF8BD932888    0

感谢。

Answer 1

更改

Count(*) AS 'Hits'

在

Count(WH.QUERY) AS 'Hits'

Count（*）计算所有行，Count（） - 计数值（NULL除外）

SQL Query返回匹配项

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