[英]MYSQL UNION JOIN SUM(amount) output two result instead of one
我下面有這個:
SELECT a.* FROM ( SELECT
asset_liability_income_expenditure_tbl.a_l_code,
SUM(mainaccount_a_2017.amount), mainaccount_a_2017.dr_cr_action
FROM `mainaccount_a_2017` LEFT JOIN chart_of_account
ON (
chart_of_account.joint_account_numbers =
mainaccount_a_2017.joint_account_number
)
LEFT JOIN asset_liability_income_expenditure_tbl
ON (
asset_liability_income_expenditure_tbl.a_l_code =
chart_of_account.account_type
)
WHERE asset_liability_income_expenditure_tbl.a_l_code = 'FA'
AND mainaccount_a_2017.dr_cr_action = 'DR' UNION
SELECT asset_liability_income_expenditure_tbl.a_l_code,
SUM(mainaccount_b_2017.amount),
mainaccount_b_2017.dr_cr_action
FROM `mainaccount_b_2017`
LEFT JOIN chart_of_account ON (
chart_of_account.joint_account_numbers =
mainaccount_b_2017.joint_account_number
)
LEFT JOIN asset_liability_income_expenditure_tbl ON (
asset_liability_income_expenditure_tbl.a_l_code =
chart_of_account.account_type
)
WHERE asset_liability_income_expenditure_tbl.a_l_code = 'FA'
AND mainaccount_b_2017.dr_cr_action = 'DR'
) AS a
它工作正常,但在頂部顯示一個空行,在其下面顯示或總和。 我嘗試了LIMIT 1,但問題是當第2行中的SUM(amount)輸出時,我無法獲取,如果我不應用任何限制,則僅獲取第1行中其SUM(amount)輸出的結果。不知道缺少了什么。 請協助。 謝謝。
我想到了。 我不得不翻轉一些東西。 結果如下:
SELECT SUM(a) FROM
(
SELECT SUM(mainaccount_a_2017.amount)
AS a FROM `mainaccount_a_2017`
LEFT JOIN chart_of_account ON (chart_of_account.joint_account_numbers = mainaccount_a_2017.joint_account_number)
LEFT JOIN asset_liability_income_expenditure_tbl ON (asset_liability_income_expenditure_tbl.a_l_code = chart_of_account.account_type)
WHERE asset_liability_income_expenditure_tbl.a_l_code = 'FA'
AND mainaccount_a_2017.dr_cr_action = 'DR'
UNION ALL
SELECT SUM(mainaccount_b_2017.amount)
AS a FROM `mainaccount_b_2017`
LEFT JOIN chart_of_account ON (chart_of_account.joint_account_numbers = mainaccount_b_2017.joint_account_number)
LEFT JOIN asset_liability_income_expenditure_tbl ON (asset_liability_income_expenditure_tbl.a_l_code = chart_of_account.account_type)
WHERE asset_liability_income_expenditure_tbl.a_l_code = 'FA' AND mainaccount_b_2017.dr_cr_action = 'DR'
) a
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