質問編集履歴
1
explainの結果を追記。primarykeyの結果も追記
test
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File without changes
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test
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@@ -48,4 +48,25 @@
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48
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count = 354,868
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49
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処理時間=0.8秒ほど
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explainを実行した結果は以下のとおりです。
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54
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```MySQL
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explain select count(*) from MyTable;
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```
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58
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```MySQL
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61
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explain select
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max(length(longblobData)) as max,
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min(length(longblobData)) as min,
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64
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avg(length(longblobData)) as average,
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count(longblobData) as count
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from MyTable
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```
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68
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----
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またprimarykeyは設定されているようです。
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