SQL LEAD Function: Uses & Examples

The LEAD() function in SQL is used to retrieve the value of a specific column in the row that follows the current row. This function is typically used to find the value of the next row in a result set for comparison or calculation purposes.

Some common uses of the LEAD() function include:

  1. Look up the next value in the table for comparison or calculation purposes.
  2. Find the value of the next time point in time series data.
  3. Find the value of the next row in the result set for further operations.
  4. Calculate the difference or percentage change between adjacent rows.

In general, the LEAD() function can assist us in SQL queries to conveniently retrieve and handle the value of the next row related to the current row.

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