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sql replace null values


trilbyfish

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I have a mysql table with columns

`baynumber`, `08:00 - 09:00`, `09:00 - 10:00`, `10:00 - 11:00`, `11:00 - 12:00`, `12:00 - 13:00`, `13:00 - 14:00`, `14:00 - 15:00`, `15:00 - 16:00`, `16:00 - 17:00`

, but how can i replace a blank value in all of these columns with something such as 'empty'. I think the COALESCE function is needed but i cant figure out how to use it in a table with more than a few columns.

 

It needs to be something that just prints the sql table by replacing the null value with something, rather than updating the table by replacing null cells with values.

 

Thanks in advance

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