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Remove duplicated word in README
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@ -178,7 +178,7 @@ rather somewhere to the right of that page. To ensure that VACUUM can't
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prematurely remove such heap tuples, we require btbulkdelete to obtain a
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prematurely remove such heap tuples, we require btbulkdelete to obtain a
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super-exclusive lock on every leaf page in the index, even pages that
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super-exclusive lock on every leaf page in the index, even pages that
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don't contain any deletable tuples. Any scan which could yield incorrect
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don't contain any deletable tuples. Any scan which could yield incorrect
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results if the tuple at a TID matching the the scan's range and filter
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results if the tuple at a TID matching the scan's range and filter
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conditions were replaced by a different tuple while the scan is in
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conditions were replaced by a different tuple while the scan is in
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progress must hold the pin on each index page until all index entries read
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progress must hold the pin on each index page until all index entries read
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from the page have been processed. This guarantees that the btbulkdelete
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from the page have been processed. This guarantees that the btbulkdelete
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