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Results tagged with mysql
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user 8153
MySQL is an open-source, relational database management system. If your PHP code uses MySQLi, use the MySQLi tag instead.
5
votes
2
answers
6k
views
Using a subquery to rename columns
as y
FROM
basetable) somealias;
The issue is:
a select query that does some complex operations, resulting in a column with a new name
directly reusing the "new" column doesn't work in MySQL … (unsure about other RDBMS's)
This code fails:
SELECT
<some gigantic and complicated query> as w,
a + b as x,
a - b as y,
(w + x) / y as z
FROM
basetable;
Because MySQL doesn't …
- 211