Swap Salary - Sql - Easy - LeetCode
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Swap Salary - Sql - Easy - LeetCode

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  • 1The task is to swap 'm' and 'f' values in the salary table using a single update statement.
  • 2The update statement utilizes ASCII values to perform the swap without a temporary table.
  • 3The final output reflects the swapped values for the 'sex' column in the salary table.

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"The task is to swap 'm' and 'f' values in the salary table using a single update statement."

Swap Salary - Sql - Easy - LeetCode

Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice versa) with a single update statement and no intermediate temp table.

Note that you must write a single update statement, DO NOT write any select statement for this problem.

Example:

| id | name | sex | salary | |----|------|-----|--------| | 1 | A | m | 2500 | | 2 | B | f | 1500 | | 3 | C | m | 5500 | | 4 | D | f | 500 | After running your update statement, the above salary table should have the following rows: | id | name | sex | salary | |----|------|-----|--------| | 1 | A | f | 2500 | | 2 | B | m | 1500 | | 3 | C | f | 5500 | | 4 | D | m | 500 |

# Write your MySQL query statement below
Update salary set sex = CHAR(ASCII('f') ^ ASCII('m') ^ ASCII(sex));

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sumitc91

Published on 17 October 2020 · 1 min read · 183 words

Part of AskGif Blog · coding

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