order child below the parent in mysqli
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showing results for - "order child below the parent in mysqli"
Syrine
18 Jan 2020
1# If no-parent = 0 instead of null
2SELECT CONCAT(IF(parent = 0,'',CONCAT('/',parent)),'/',id) AS gen_order
3FROM table
4ORDER BY gen_order
5
6#and if no-parent = null
7ORDER BY COALESCE(parent, id), parent IS NOT NULL, id your answer for
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