Select fields of a table with a conditional WHERE clause

Question

I have 3 left joined tables in MySql.

contratos , which stores customer data

funcionario , which stores employee data

cobranca , which stores every customer charge.

I want to generate a report based on charge status . But each customer charge has many status , and i want to retrieve the current status .

The following code returns the last update from cobrancas table.

SELECT cob.status, cob.created, con.data_venda, cpn.contrato, con.razao_social, con.cnpj, con.valor, f.nick
FROM cobrancas cob
LEFT JOIN contratos con
ON c.id = cob.contrato
LEFT JOIN funcionarios f
ON f.id = cob.cobrador
WHERE 1=1
ORDER BY cob.created DESC
LIMIT 1

But it returns without a status filter. If i put a WHERE clause like cob.status = 'x' , it returns the last record with this status , but it may not be the current. So how can i check if cob.status is the current status in WHERE clause to decide if i will put it in the list? Something like:

WHERE IF(cob.status == the last status inserted AND cob.status == 'x')

Can you understand what i want to do? Thank you.

Answer 1

One solution to use subquery

select * from
(
SELECT cob.status, cob.created, con.data_venda, cpn.contrato, con.razao_social, con.cnpj, con.valor, f.nick
FROM cobrancas cob
LEFT JOIN contratos con
ON c.id = cob.contrato
LEFT JOIN funcionarios f
ON f.id = cob.cobrador
WHERE 1=1
ORDER BY cob.created DESC
LIMIT 1
) where status = 'X'