ConChainNum、Control、およびTransDateを含むインデックスがあり、インデックスを再構築しました。私が使用しているテーブルには1億を超えるレコードがあり、次のクエリは結果を返しません。
select * from sbt_pos_sales
where conchainnum = 810 and
control = 852013688 and
transdate = 20120712
where句の3つのフィールドで特別に作成されたインデックスがあることを考えると、ほぼ即時の結果を期待していましたが、結果がない場所を通知するのに約30分かかりました。
誰かが私にこのインデックスがそれより速くならない理由を説明できますか、そして私がどうにかしてそれを速くするために別の方法でそれを行うことができれば?
実行計画:
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="RowIdent" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="Control" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="DateSold" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="Price_UCP" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="Store" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="QtySold" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="FileName" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="IssueCode" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="IssueCode" />
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="DealerNum" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="Store" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="QtySold" />
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<DefinedValue>
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="FileName" />
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<DefinedValue>
<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="IssueCode" />
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<ColumnReference Database="[NGDWDB]" Schema="[dbo]" Table="[SBT_POS_SALES]" Column="DealerNum" />
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