SQL  de SELECAO do dia Anterior.  Saldo Final: 
SELECT Saldo_Final FROM comissao_flex  WHERE Dominio = "40"   AND Empresa="1"    AND Vendedor="3510"    AND Data_Flex<"2021-07-08" ORDER BY Data_flex DESC LIMIT 1  

 SQL  de SELECAO do dia Anterior.  Saldo Final: 210730.03
SELECT Saldo_Final FROM comissao_flex  WHERE Dominio = "40"   AND Empresa="1"    AND Vendedor="2089"    AND Data_Flex<"2021-07-08" ORDER BY Data_flex DESC LIMIT 1