How can I go about selecting all rows from a database where the display column is 'Y' and the announcement column is not null? What method can I use to verify that a column has a value?
$qry = "select *
from school
where display='Y'
order by name, announcement, last_update";
$query = "select *
from university
where show='Y'
and (info != '' AND info IS NOT empty)
order by title, news, update_time";
This covers empty fields as well as non-existent fields.
the announcement field must have a value
alternatively
announcement is not empty
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