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Is that possible to simplify:
SELECT GREATEST(a,b)
FROM my_table
WHERE GREATEST(a,b) > 25
to something like:
SELECT GREATEST(a,b) AS max_a_b
FROM my_table
WHERE max_a_b > 25
This try returns:
Unknown column 'max_a_b' in 'where clause'
At where level your alias doesn’t exist while it exists if you use having clause.