MySQL function

Splicing function ：concat(str,‘ Spliced characters ’)
Keep the data on the left ：LEFT(str,0)
Keep the data on the right ：RIGHT(str,0)
Empty function and assign value ：IFNULL(str,‘ Customize ’)
Splicing function ：CONCAT_WS(str,str,…)
Splicing function after grouping ：GROUP_CONCAT(str,str…)

SELECT
	concat(LEFT(t2.task_time,4),' year ') year,
	RIGHT(t2.task_time,5) date,
	IFNULL(GROUP_CONCAT( concat( t3.custom_inputs_name, '(', t3.num, t3.unit_name, ')' ) ),' No record yet ') detail,
CONCAT_WS(',',t2.image1,t2.image2,t2.image3) images
FROM
	tb_farming_plot t1
	LEFT JOIN tb_farming_manage t2 ON t2.record_id = t1.record_id
	LEFT JOIN tb_farming_manage_detail t3 ON t3.manage_id = t2.id 
GROUP BY
	t2.id 
HAVING
	count( t2.id  )>= 1
ORDER BY t2.task_time desc

result