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我從bigTable1(指數-ED)中選擇一組數據,然後將它們插入到另一個bigTable2(指數-ED)問題插入進(BigTable1)選擇(BiggerTable2)
我有兩個選擇:這是一個好主意:
選項:1
INSERT INTO bigTable2 (bigTable2.Col1, bigTable2.Col2)
SELECT bigTable1.Col1, bigTable1.Col2 FROM bigTable1 (nolock)
WHERE bigTable1.col3 between @value1 and @value2
選項:2
CREATE #TEMP (Col1 int, Col2 varchar(200))
INSERT INTO #TEMP (Col1, Col2)
SELECT bigTable1.Col1, bigTable1.Col2 FROM bigTable1 (nolock)
WHERE bigTable1.col3 between @value1 and @value2
INSERT INTO bigTable2 (bigTable2.Col1, bigTable2.Col2)
SELECT Col1, Col2 FROM #TEMP
我不想要鎖定bigTable1。請告知兩者哪一個更好?還有其他建議嗎?