Question

I working in a poll script, i have two tables {hs_questions_q}{hs_answers_ans} the first one stored the question and the second stored its answers

i used this sql statement to retrieve the data

SELECT * FROM hs_questions_q INNER JOIN hs_answers_ans ON id_q=idq_ans WHERE active_q ='1' and home_q ='1' ORDER BY id_q DESC limit 1

what i was wonder and i can’t deal with in my php code is how that this query returned the last row only from the the question table and answers table, but i need to retrieve the last row from the question table and all rows related to it from the answers table

Answer 1

This will return 1 row per question in the table not as the num rows of answers:

I assume the structure:

hs_questions_q (id,desc)

hs_answers_ans(id,desc)

SELECT question.desc, group_concat(hs_answers_ans.desc SEPARATOR '#')
FROM (select * 
          from hs_questions_q 
          where active_q ='1' and home_q ='1' ORDER BY id_q DESC limit 1) question
INNER JOIN hs_answers_ans ON id_q=idq_ans
group by question.id

result:
question1 | Answer1#Answer2#Answer3

Later, you can split it by ‘#’ after retrieving the result on the php side.

You might get truncated answers if it exceeds the allowed packet size. You can solve it by,

SET SESSION group_concat_max_len = 6000(any threshold);