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Operations on the first and last lines of Oracle subqueries

Source: Internet
Author: User
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Introduction: when processing similar records of a sequential account, you may often encounter the situation of "taking the first and last records for calculation on a table value. For example, the logging and end-to-end increase.

Introduction: when processing similar records of a sequential account, you may often encounter the situation of "taking the first and last records for calculation on a table value. For example, the logging and end-to-end increase.

Introduction:

When processing a sequential account with similar records, you may often encounter the situation of "taking the first and last records for calculation on a certain Table value. For example, logging, and end-to-end increase. Therefore, I recommend an Oracle keep syntax to everyone.

I would like to express my special thanks to the oracle group and the ranking elder brother from Wenzhou.

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