Solution: Subquery Return More Than 1 Row

just add LIMIT 1 in the end of your query.

for example:

select *
from table
where id IN (multiple row query);

make it like this:

SELECT *
FROM Students
WHERE Marks = (SELECT MAX(Marks) FROM Students) --Subquery returns only 1 value

SELECT *
FROM Students
WHERE Marks IN
(SELECT Marks
FROM Students
ORDER BY Marks DESC
LIMIT 10) --Subquery returns 10 values

PS: the sample taken from stackoverflow

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