would like to update all record on a field which i only want it to fill it with random either Y or N

currently using:

update table1 set field1=( RAND() FROM Y FOR N)

which is not working, any idea?


solved with this:

update table1 set field1 = case floor(1 + rand()*2) when 1 then 'Y' else 'N' end;
| improve this answer | |

A shorter alternative is the inline IF:

update table1 set field1 = IF(rand()*2 > 1, 'Y', 'N');

You can try it out with this demo SELECT:

SELECT IF(rand()*2 > 1, 'Y', 'N') AS indecision_demo;
| improve this answer | |

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