求mysql中的父子之和

Question

id  parent-id   total
139    0       -11000.00
140   139      -2000.00
141   140      3000.00
142   141       0.00
143   142      5000.00
144   143      0.00
145   144      0.00
147   145      0.00
148   147      0.00

This is my table. the values is stored in temporary table.I need find the parent child sum. expected output

id  parent-id   total        sub-tot
139        0    -11000.00   -5000
140      139    -2000.00    6000
141      140    3000.00    8000
142      141    0.00       5000
143      142    5000.00    5000
144      143    0.00       0
145      144    0.00       0
147      145    0.00       0
148      147    0.00       0

i couldn't use recursive as my data is present in temp table. is there any other way

Answer 1

i couldn't use recursive as my data is present in temp table.

You may use static table copy in stored procedure, for example.

CREATE PROCEDURE get_subtotal ()
BEGIN

CREATE TABLE statictest SELECT * FROM temptest;

WITH RECURSIVE
cte AS ( SELECT id, 
                parent_id, 
                total, 
                0 subtotal, 
                id current_id, 
                NOT EXISTS ( SELECT NULL 
                             FROM statictest tt2 
                             WHERE tt2.parent_id = statictest.id ) done
         FROM statictest
         UNION ALL
         SELECT cte.id, 
                cte.parent_id, 
                cte.total, 
                cte.subtotal + tt1.total, 
                tt1.id,
                NOT EXISTS ( SELECT NULL 
                             FROM statictest tt2 
                             WHERE tt2.parent_id = tt1.id )
         FROM cte 
         JOIN statictest tt1 ON cte.current_id = tt1.parent_id )
SELECT id, parent_id, total, subtotal 
FROM cte
WHERE done
ORDER BY id;

DROP TABLE statictest;

END

https://dbfiddle.uk/?rdbms=mysql_8.0&fiddle=8667bfeb06495f6f4dea7280b27a2a43