我在SQL Server 2008中使用全文本搜索。以下查询
select * From MyTable where contains( *, 'FLOW AND VALVE')
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返回两行:
1. FLOW CONTROL VALVE
2. FLOW VALVE
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但是下面的查询
select * From MyTable where contains( *, '"FLOW AND VALVE"'))
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仅返回一行:
1. FLOW CONTROL VALVE
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为什么第二个查询不返回第二行?