SELECT
SUM(TRANSACTION_AMOUNT) AS CASHFLOW_NET,
DATE_TRUNC('day', TRANSACTION_DATE) AS CASHFLOW_DATE
FROM (
SELECT
SALESINVOICE_DATE AS TRANSACTION_DATE,
SALESINVOICE_NET AS TRANSACTION_AMOUNT
FROM CODBEX_SALESINVOICE
UNION ALL
SELECT
PURCHASEINVOICE_DATE AS TRANSACTION_DATE,
-PURCHASEINVOICE_NET AS TRANSACTION_AMOUNT
FROM CODBEX_PURCHASEINVOICE
) AS CombinedData
GROUP BY DATE_TRUNC('day', TRANSACTION_DATE)
ORDER BY CASHFLOW_DATE DESC;
Add report using this sql query: