Menggunakan PHP MYSQLi cara mendapatkan hanya debitur dan hanya kreditur yang dikelola dengan action_type DR dan CR

Tampaknya Anda hanya perlu mengubah HAVING klausa, untuk memfilter kasus di mana balance lebih dari nol (Debitur) ATAU balance kurang dari nol (Kredit).

Anda juga dapat menggunakan IF() condition bersyarat ekspresi untuk menentukan dr/cr di balance kolom.

Untuk mendapatkan Debitur hanya:

SELECT client_id, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'dr' THEN amount 
                    end, 0)) AS total_debits, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'cr' THEN amount 
                    end, 0)) AS total_credits, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'cr' THEN amount 
                    end, 0)) - Sum(Coalesce(CASE 
                                              WHEN action_type = 'dr' THEN 
                                              amount 
                                            end, 0)) AS total_debtors, 
       IF(Sum(Coalesce(CASE 
                         WHEN action_type = 'cr' THEN amount 
                       end, 0)) - Sum(Coalesce(CASE 
                                                 WHEN action_type = 'dr' THEN 
                                                 amount 
                                               end, 0)) > 0, 'dr', 'cr') AS balance 
FROM   tbl_balancesheet 
GROUP  BY client_id 
HAVING balance = 'dr' AND total_debtors <> 0

Untuk mendapatkan Kredit hanya:

SELECT client_id, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'dr' THEN amount 
                    end, 0)) AS total_debits, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'cr' THEN amount 
                    end, 0)) AS total_credits, 
       Sum(Coalesce(CASE 
                      WHEN action_type = 'cr' THEN amount 
                    end, 0)) - Sum(Coalesce(CASE 
                                              WHEN action_type = 'dr' THEN 
                                              amount 
                                            end, 0)) AS total_debtors, 
       IF(Sum(Coalesce(CASE 
                         WHEN action_type = 'cr' THEN amount 
                       end, 0)) - Sum(Coalesce(CASE 
                                                 WHEN action_type = 'dr' THEN 
                                                 amount 
                                               end, 0)) > 0, 'dr', 'cr') AS balance 
FROM   tbl_balancesheet 
GROUP  BY client_id 
HAVING balance = 'cr' AND total_debtors <> 0