php - MySql Select Result Having Combined Multiple Queries From Both the Same Table and Others -
i have table ('names') includes data related other data in other tables relying on ids. example:
*names table
id | name | predecessor | successor | house | birthplace ----------------------------------------------------------------- 10 bayezid ii 9 11 4 null 11 selim 10 12 4 5 12 suleiman 11 13 4 61
*houses table
id | house -------------- 4 house of osman
*places table
id | place -------------- 5 amasya 61 trabzon
what i'm trying accomplish construct query results in returning whole information depending on id, like:
{"result":[{ "id":"11", "name":"selim i", "predecessor": "bayezid ii", "successor": "suleiman", "house":"house of osman", "birthplace":"amasya" }]}
so, name of house , birthplace brought other tables ('houses', 'places') whereas predecessor , successor same table. need constructing query. thank you.
just self-join couple times, once predecessor's row (aliased n0
below), , once more successor's (n2
):
select n1.id, n1.name, n0.name predecessor, n2.name successor names n1 left join names n0 on n1.predecessor = n0.id left join names n2 on n1.successor = n2.id
joining house , birthplace left exercise reader.
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